Fixed green terminal pin centering.

Fixed some typos
Renders of dxfs now use the sheet colour.
2025-09-03 12:22:46 +02:00 · 2020-04-08 19:15:38 +01:00 · 2020-04-08 19:13:06 +01:00 · 2020-04-07 22:07:28 +01:00 · 2020-04-07 19:36:38 +01:00 · 2020-04-07 17:02:10 +01:00
133 changed files with 827 additions and 519 deletions
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -164,7 +164,7 @@ This is achieved by having a pair of modules: -
    module handle_assembly() pose([225, 0, 150], [0, 0, 14]) //! Printed part with inserts in place
    assembly("handle") {
        translate_z(handle_height())
-            color(pp1_colour) vflip() handle_stl();
+            stl_colour(pp1_colour) vflip() handle_stl();

        handle_screw_positions()
            vflip()
--- a/examples/MainsBreakOutBox/assemblies/feet_assembly.png
+++ b/examples/MainsBreakOutBox/assemblies/feet_assembly.png
--- a/examples/MainsBreakOutBox/bom/bom.json
+++ b/examples/MainsBreakOutBox/bom/bom.json
@@ -1,67 +1,119 @@
 [
    {
        "name": "base_assembly",
+        "big": null,
        "count": 1,
        "assemblies": {},
        "vitamins": {
-            "insert(F1BM3): Heatfit insert M3": 2
+            "insert(F1BM3): Heatfit insert M3": {
+                "count": 2
+            }
        },
        "printed": {
-            "socket_box.stl": 1
+            "socket_box.stl": {
+                "count": 1,
+                "colour": "dimgrey"
+            }
        },
        "routed": {}
    },
    {
        "name": "feet_assembly",
+        "big": null,
        "count": 1,
        "assemblies": {
            "base_assembly": 1
        },
        "vitamins": {
-            "washer(M3_washer): Washer  M3 x 7mm x 0.5mm": 8,
-            "screw(M3_dome_screw, 10): Screw M3 dome x 10mm": 4,
-            "nut(M3_nut, nyloc = true): Nut M3 x 2.4mm nyloc": 4
+            "washer(M3_washer): Washer  M3 x 7mm x 0.5mm": {
+                "count": 8
+            },
+            "screw(M3_dome_screw, 10): Screw M3 dome x 10mm": {
+                "count": 4
+            },
+            "nut(M3_nut, nyloc = true): Nut M3 x 2.4mm nyloc": {
+                "count": 4
+            }
        },
        "printed": {
-            "foot.stl": 4
+            "foot.stl": {
+                "count": 4,
+                "colour": "darkorange"
+            }
        },
        "routed": {}
    },
    {
        "name": "mains_in_assembly",
+        "big": null,
        "count": 1,
        "assemblies": {
            "feet_assembly": 1
        },
        "vitamins": {
-            ": Wire green & yellow 30/0.25mm strands, length 150mm - not shown": 1,
-            ": Wire blue 30/0.25mm strands, length 150mm - not shown": 1,
-            ": Wire brown 30/0.25mm strands, length 150mm - not shown": 2,
-            "tubing(HSHRNK32): Heatshrink sleeving ID 3.2mm x 15mm - not shown": 3,
-            "iec(IEC_inlet_atx): IEC inlet for ATX": 1,
-            "screw(M3_cs_cap_screw, 12): Screw M3 cs cap x 12mm": 2,
-            "washer(M3_washer): Washer  M3 x 7mm x 0.5mm": 2,
-            "nut(M3_nut, nyloc = true): Nut M3 x 2.4mm nyloc": 2
+            ": Wire green & yellow 30/0.25mm strands, length 150mm - not shown": {
+                "count": 1
+            },
+            ": Wire blue 30/0.25mm strands, length 150mm - not shown": {
+                "count": 1
+            },
+            ": Wire brown 30/0.25mm strands, length 150mm - not shown": {
+                "count": 2
+            },
+            "tubing(HSHRNK32): Heatshrink sleeving ID 3.2mm x 15mm - not shown": {
+                "count": 3
+            },
+            "iec(IEC_inlet_atx): IEC inlet for ATX": {
+                "count": 1
+            },
+            "screw(M3_cs_cap_screw, 12): Screw M3 cs cap x 12mm": {
+                "count": 2
+            },
+            "washer(M3_washer): Washer  M3 x 7mm x 0.5mm": {
+                "count": 2
+            },
+            "nut(M3_nut, nyloc = true): Nut M3 x 2.4mm nyloc": {
+                "count": 2
+            }
        },
        "printed": {},
        "routed": {}
    },
    {
        "name": "main_assembly",
+        "big": null,
        "count": 1,
        "assemblies": {
            "mains_in_assembly": 1
        },
        "vitamins": {
-            ": Wire green & yellow 30/0.25mm strands, length 150mm - not shown": 1,
-            ": Wire blue 30/0.25mm strands, length 150mm - not shown": 1,
-            "tubing(HSHRNK32): Heatshrink sleeving ID 3.2mm x 15mm - not shown": 5,
-            ": Ferrule for 1.5mm^2 wire - not shown": 3,
-            "mains_socket(Contactum): Mains socket 13A": 1,
-            "screw(M3_cs_cap_screw, 20): Screw M3 cs cap x 20mm": 2,
-            "jack_4mm_shielded(\"blue\", 3, \"royalblue\"): 4mm shielded jack socket blue": 2,
-            "jack_4mm_shielded(\"brown\", 3, \"sienna\"): 4mm shielded jack socket brown": 1,
-            "jack_4mm_shielded(\"green\", 3): 4mm shielded jack socket green": 2
+            ": Wire green & yellow 30/0.25mm strands, length 150mm - not shown": {
+                "count": 1
+            },
+            ": Wire blue 30/0.25mm strands, length 150mm - not shown": {
+                "count": 1
+            },
+            "tubing(HSHRNK32): Heatshrink sleeving ID 3.2mm x 15mm - not shown": {
+                "count": 5
+            },
+            ": Ferrule for 1.5mm^2 wire - not shown": {
+                "count": 3
+            },
+            "mains_socket(Contactum): Mains socket 13A": {
+                "count": 1
+            },
+            "screw(M3_cs_cap_screw, 20): Screw M3 cs cap x 20mm": {
+                "count": 2
+            },
+            "jack_4mm_shielded(\"blue\", 3, \"royalblue\"): 4mm shielded jack socket blue": {
+                "count": 2
+            },
+            "jack_4mm_shielded(\"brown\", 3, \"sienna\"): 4mm shielded jack socket brown": {
+                "count": 1
+            },
+            "jack_4mm_shielded(\"green\", 3): 4mm shielded jack socket green": {
+                "count": 2
+            }
        },
        "printed": {},
        "routed": {}
--- a/examples/MainsBreakOutBox/scad/bob_main.scad
+++ b/examples/MainsBreakOutBox/scad/bob_main.scad
@@ -173,7 +173,7 @@ module socket_box_stl() {
 //
 module base_assembly()
 assembly("base") {
-    color(pp1_colour) render() /*clip(ymax = 0)*/ socket_box_stl();
+    stl_colour(pp1_colour) render() /*clip(ymax = 0)*/ socket_box_stl();

    mains_socket_hole_positions(socket)
        translate_z(height)
--- a/examples/MainsBreakOutBox/stls/foot.png
+++ b/examples/MainsBreakOutBox/stls/foot.png
--- a/examples/MainsBreakOutBox/stls/socket_box.png
+++ b/examples/MainsBreakOutBox/stls/socket_box.png
--- a/gallery/FilamentDryBox.png
+++ b/gallery/FilamentDryBox.png
--- a/gallery/IOT_50V_PSU.png
+++ b/gallery/IOT_50V_PSU.png
--- a/gallery/Laser_load.png
+++ b/gallery/Laser_load.png
--- a/gallery/SunBot.png
+++ b/gallery/SunBot.png
--- a/gallery/Turntable.png
+++ b/gallery/Turntable.png
--- a/gallery/Variac.png
+++ b/gallery/Variac.png
--- a/gallery/readme.md
+++ b/gallery/readme.md
@@ -84,7 +84,7 @@ Mains isolated and variable supply with metering.

 <a name="TOP"></a>
 ## SunBot
-A solar tracker to keep solar powerbanks pointing at the sun.
+A solar tracker to keep a solar panel pointing at the sun.

 ![](SunBot.png)

--- a/global_defs.scad
+++ b/global_defs.scad
@@ -51,7 +51,7 @@ $fa = 6;
 $fs = extrusion_width / 2;

 function round_to_layer(z) = ceil(z / layer_height) * layer_height;
-// Some additional named colors
+// Some additional named colours
 grey20                          = [0.2, 0.2, 0.2];
 grey30                          = [0.3, 0.3, 0.3];
 grey40                          = [0.4, 0.4, 0.4];
--- a/libtest.png
+++ b/libtest.png
--- a/libtest.scad
+++ b/libtest.scad
@@ -171,8 +171,8 @@ hot_ends_y = pulleys_y + 60;
 linear_bearings_y = hot_ends_y + 50;
 sheets_y = linear_bearings_y + 100;
 pcbs_y = sheets_y + 40;
-displays_y = pcbs_y + 150;
-fans_y = displays_y + 100;
+displays_y = pcbs_y + 170;
+fans_y = displays_y + 80;
 transformers_y = fans_y + 120;
 psus_y = transformers_y + 190;

@@ -380,7 +380,7 @@ translate([x4 + 150, belts_y + 58]) {
 translate([x4, rails_y + 130])
    rails();

-translate([800, fans_y])
+translate([800, fans_y + 50])
    cable_strips();

 translate([x4, kp_pillow_blocks_y])
--- a/printed/box.scad
+++ b/printed/box.scad
@@ -129,7 +129,7 @@ module box_corner_profile(type) { //! Generates the corner profile STL for 3D pr

    length = box_height(type) - 2 * box_margin(type);
    difference() {
-        linear_extrude(height = length, center = true, convexity = 5)
+        linear_extrude(length, center = true, convexity = 5)
            box_corner_profile_2D(type);

        for(z = [-1, 1])
@@ -148,24 +148,24 @@ module box_corner_profile_section(type, section, sections) { //! Generates inter

    difference() {
        union() {
-            linear_extrude(height = h, convexity = 5)
+            linear_extrude(h, convexity = 5)
                box_corner_profile_2D(type);

            if(!last_section)                              // male end always at the top
                translate_z(section_length - 1)
                    for(i = [0 : 1], offset = i * layer_height)
-                        linear_extrude(height = overlap + 1 - offset)
+                        linear_extrude(overlap + 1 - offset)
                            offset(1 + offset - layer_height)
                                offset(-overlap_wall - 1)
                                    box_corner_profile_2D(type);
        }
        if(section > 0)
            translate_z(last_section ? h : 0) {       // female at bottom unless last section
-                linear_extrude(height = 2 * (overlap + layer_height), center = true, convexity = 5)
+                linear_extrude(2 * (overlap + layer_height), center = true, convexity = 5)
                    offset(-overlap_wall)
                        box_corner_profile_2D(type);

-                linear_extrude(height = 2 * layer_height, center = true, convexity = 5)
+                linear_extrude(2 * layer_height, center = true, convexity = 5)
                    offset(-overlap_wall + layer_height)
                        box_corner_profile_2D(type);
            }
@@ -223,7 +223,7 @@ module box_bezel(type, bottom) { //! Generates top and bottom bezel STLs
        // slots for side panels
        //
        translate_z(-box_profile_overlap(type))
-            linear_extrude(height = 2 * box_profile_overlap(type), center = true)
+            linear_extrude(2 * box_profile_overlap(type), center = true)
                for(i = [-1, 1]) {
                    translate([i * (box_width(type) / 2 + t / 2 - sheet_slot_clearance / 2), 0])
                         square([t, box_depth(type) - 2 * box_corner_gap(type)], center = true);
@@ -240,7 +240,7 @@ module box_bezel(type, bottom) { //! Generates top and bottom bezel STLs
        // leave plastic over the corner profiles
        //
        translate_z(-box_profile_overlap(type) - 1)
-            linear_extrude(height = box_profile_overlap(type) + box_corner_gap(type) + 2)
+            linear_extrude(box_profile_overlap(type) + box_corner_gap(type) + 2)
                union() {
                    difference() {
                        square([box_width(type) - 2 * box_inset(type),
@@ -273,7 +273,7 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
    end_clearance = 0.5;
    module male() {
        rotate([90, 0, 90])
-            linear_extrude(height = dowel_length - 2 * end_clearance, center = true)
+            linear_extrude(dowel_length - 2 * end_clearance, center = true)
                difference() {
                    union() {
                        h = dh - layer_height;
--- a/printed/box_assembly.scad
+++ b/printed/box_assembly.scad
@@ -33,7 +33,7 @@ assembly("box") {
        y = [-1,-1,1,1][corner];
        translate([x * (box_width(type) / 2 + 25 * exploded()), y * (box_depth(type) / 2 + 25 * exploded())])
            rotate(corner * 90) {
-                color(pp2_colour) render()
+                stl_colour(pp2_colour) render()
                    box_corner_profile(type);

                translate([box_hole_inset(type), box_hole_inset(type)])
@@ -50,7 +50,7 @@ assembly("box") {
        translate_z(z * (box_height(type) / 2 - box_corner_gap(type) + 50 * exploded()))
            rotate([z * 90 - 90, 0, 0])
                if(bezels && (z > 0 ? top : base))
-                    color(pp1_colour) render() box_bezel(type, z < 0);
+                    stl_colour(pp1_colour) render() box_bezel(type, z < 0);

        translate_z(z * (box_height(type) / 2 + sheet_thickness + 50 * exploded()))
            box_screw_hole_positions(type)
--- a/printed/cable_grommets.scad
+++ b/printed/cable_grommets.scad
@@ -59,7 +59,7 @@ module ribbon_grommet(ways, thickness) { //! Generate the STL for a printed ribb
        union() {
            for(side = [-1, 1])
                translate_z(side * (width - wall) / 2)
-                    linear_extrude(height = wall, center = true, convexity = 5)
+                    linear_extrude(wall, center = true, convexity = 5)
                        difference() {
                            hull() {
                                translate([-length / 2, 0])
@@ -73,7 +73,7 @@ module ribbon_grommet(ways, thickness) { //! Generate the STL for a printed ribb
                                square([slot_length, slot_height]);
                        }

-            linear_extrude(height = width -1, center = true)
+            linear_extrude(width -1, center = true)
                difference() {
                    ribbon_grommet_hole(ways, expand = false, h = 0);

@@ -133,12 +133,12 @@ module round_grommet_hole(diameter, h = 100) //! Make a hole for a round grommet
    drill(corrected_radius(diameter / 2) + wall + clearance, h);

 module round_grommet_assembly(diameter, thickness, od = undef) {
-    color(pp1_colour)
+    stl_colour(pp1_colour)
        translate_z(wall)
            vflip()
                round_grommet_top(diameter, thickness, od);

-    color(pp2_colour)
+    stl_colour(pp2_colour)
        translate_z(-thickness)
            vflip()
                round_grommet_bottom(diameter, od);
@@ -170,14 +170,14 @@ module mouse_grommet(r, thickness) { //! Make the STL for a mouse grommet
        union() {
            for(side = [-1, 1])
                translate_z(side * (width - wall) / 2)
-                    linear_extrude(height = wall, center = true)
+                    linear_extrude(wall, center = true)
                        difference() {
                            mouse_grommet_hole(r, z = r + wall, h = 0, expand = wall + overlap);

                        translate([0, wall])
                            mouse_grommet_hole(r, h = 0, expand = 0);
                    }
-            linear_extrude(height = width - 1, center = true)
+            linear_extrude(width - 1, center = true)
                difference() {
                    mouse_grommet_hole(r, h = 0, z = r + wall, expand = wall);

@@ -188,7 +188,7 @@ module mouse_grommet(r, thickness) { //! Make the STL for a mouse grommet
 }

 module mouse_grommet_assembly(r, thickness)
-    color(pp1_colour)
+    stl_colour(pp1_colour)
        rotate([-90, 0, 0])
            mouse_grommet(r, thickness);

--- a/printed/carriers.scad
+++ b/printed/carriers.scad
@@ -18,12 +18,14 @@
 //

 //
-//! Adapts ESP12 module to 0.1" grid. See <https://hydraraptor.blogspot.com/2018/04/esp-12-module-breakout-adaptor.html>.
+//! Adapts ESP12 modules and various small PCBs to 0.1" grid. See <https://hydraraptor.blogspot.com/2018/04/esp-12-module-breakout-adaptor.html>.
 //
 $extrusion_width = 0.5;

 include <../utils/core/core.scad>

+function carrier_height() = 3; //! Height of PCB carrier
+
 module ESP12F_carrier_stl() { //! Generate the STL for an ESP12 carrier
    stl("ESP12F_carrier");
    pins = 8;
@@ -33,7 +35,7 @@ module ESP12F_carrier_stl() { //! Generate the STL for an ESP12 carrier
    hole2 = pitch2 - 3 * extrusion_width;
    length1 = (pins - 1) * pitch1 + hole + squeezed_wall * 2;
    length2 = (pins - 1) * pitch2 + hole + squeezed_wall * 2;
-    height = 3;
+    height = carrier_height();

    wpitch1 = (pins - 1) * pitch1;
    wpitch2 = ceil(wpitch1 / 2.54) * 2.54;
@@ -61,3 +63,71 @@ module ESP12F_carrier_stl() { //! Generate the STL for an ESP12 carrier
                }
    }
 }
+
+module TP4056_carrier_stl() { //! Generate the STL for an TP4056 carrier, two required
+    stl("TP4056_carrier");
+    pitch = 2.54;
+    outer_pitch = 13.9;
+    inner_pitch = 7.54;
+    hole = pitch - 3 * extrusion_width;
+    pins = 6;
+    length1 = outer_pitch + hole + squeezed_wall * 2;
+    length2 = (pins - 1) * pitch + hole + squeezed_wall * 2;
+    height = carrier_height();
+
+    width = hole + squeezed_wall * 2;
+    spacing = inch(0.9);
+
+    difference() {
+        hull() {
+            translate_z(height - eps / 2)
+                cube([width, length1, eps], center = true);
+
+            translate_z(eps / 2)
+                cube([width, length2, eps], center = true);
+        }
+
+        for(i = [0 : pins - 1])
+            let(x = [-outer_pitch / 2, - inner_pitch / 2, 0, 0, inner_pitch / 2, outer_pitch / 2][i])
+                if(x)
+                    hull() {
+                        translate([0, x, height])
+                            cube([hole, hole, eps], center = true);
+
+                        translate([0, i * pitch - (pins - 1) * pitch / 2])
+                            cube([hole, hole, eps], center = true);
+                    }
+    }
+}
+
+module MT3608_carrier_stl() { //! Generate the STL for an MT3608 carrier, two required
+    stl("MT3608_carrier");
+    pcb_width = 17;
+    w_pitch_top = 6.81;
+    w_pitch_bot = inch(0.3);
+    l_pitch_top = 30.855;
+    l_pitch_bot = inch(1.2);
+    hole = 1;
+    height = carrier_height();
+    wall = 2 * extrusion_width;
+    width = hole + 2 * wall;
+    offset = (l_pitch_top - l_pitch_bot) / 2;
+
+    difference() {
+        hull() {
+            translate([offset, 0, height - eps / 2])
+                rounded_rectangle([width, pcb_width - 2, eps], 1);
+
+            translate_z(eps / 2)
+                rounded_rectangle([width, pcb_width - 2, eps], 1);
+        }
+        for(side = [-1, 1])
+            hull() {
+                translate([offset, side * w_pitch_top / 2, height])
+                    cube([hole, hole, eps], center = true);
+
+                translate([0, side * w_pitch_bot / 2])
+                    cube([hole, hole, eps], center = true);
+            }
+    }
+}
--- a/printed/corner_block.scad
+++ b/printed/corner_block.scad
@@ -120,7 +120,7 @@ module corner_block_assembly(screw = def_screw, name = false) //! The printed bl
 assembly(str("corner_block_M", 20 * screw_radius(screw))) {
    insert = screw_insert(screw);

-    color(name ? pp2_colour : pp1_colour)
+    stl_colour(name ? pp2_colour : pp1_colour)
        render() corner_block(screw, name) children();

    corner_block_h_holes(screw)
--- a/printed/door_hinge.scad
+++ b/printed/door_hinge.scad
@@ -60,7 +60,7 @@ module door_hinge(door_thickness) {                         //! Generates STL fo

    union() {
        rotate([90, 0, 0])
-            linear_extrude(height = width, center = true)
+            linear_extrude(width, center = true)
                difference() {
                    hull() {
                        translate([dia / 2, thickness + door_thickness / 2])
@@ -76,7 +76,7 @@ module door_hinge(door_thickness) {                         //! Generates STL fo
                    translate([dia / 2, thickness + door_thickness / 2])
                        teardrop(r = screw_clearance_radius(pin_screw), h = 0);
                }
-        linear_extrude(height = thickness)
+        linear_extrude(thickness)
            difference() {
                hull() {
                    translate([0, -width / 2])
@@ -108,7 +108,7 @@ module door_hinge_stat_stl() { //! Generates the STL for the stationary part
    stl("door_hinge_stat");

    union() {
-        linear_extrude(height = thickness)
+        linear_extrude(thickness)
            difference() {
                rounded_square([stat_length, stat_width], rad);

@@ -117,7 +117,7 @@ module door_hinge_stat_stl() { //! Generates the STL for the stationary part
            }

        rotate([90, 0, 0])
-            linear_extrude(height = stat_width, center = true)
+            linear_extrude(stat_width, center = true)
                difference() {
                    hull() {
                        translate([0, dia / 2 + stat_clearance])
@@ -141,7 +141,7 @@ module door_hinge_assembly(top, door_thickness = 6) { //! The moving assembly th

    translate([0, pin_y - (thickness + door_thickness / 2), dir * width / 2]) {
        rotate([90, 0, 180])
-            color(pp2_colour) door_hinge(door_thickness);
+            stl_colour(pp2_colour) door_hinge(door_thickness);

        rotate([90, 0, 0])
            door_hinge_hole_positions()
@@ -165,7 +165,7 @@ module door_hinge_static_assembly(top, sheet_thickness = 3) { //! The stationary

    translate([pin_x, 0, -dir * (stat_width / 2 + washer_thickness(screw_washer(pin_screw)))])
        rotate([90, 0, 0]) {
-            color(pp1_colour) door_hinge_stat_stl();
+            stl_colour(pp1_colour) door_hinge_stat_stl();

            door_hinge_stat_hole_positions() {
                screw_and_washer(stat_screw, stat_screw_length);
--- a/printed/door_latch.scad
+++ b/printed/door_latch.scad
@@ -65,7 +65,7 @@ module door_latch_assembly(sheet_thickness = 3) { //! The assembly for a specifi

    translate([0, -height - washer_thickness(washer)])
        rotate([-90, 0, 0]) {
-            color(pp1_colour) render() door_latch_stl();
+            stl_colour(pp1_colour) render() door_latch_stl();

            translate_z(nut_trap_depth)
                vflip()
--- a/printed/fixing_block.scad
+++ b/printed/fixing_block.scad
@@ -81,7 +81,7 @@ module fixing_block(screw = def_screw) { //! Generate the STL

    difference() {
        union() {
-            linear_extrude(height = fb_height, convexity = 5)
+            linear_extrude(fb_height, convexity = 5)
                difference() {
                    hull() {
                        for(side = [-1, 1]) {
@@ -109,7 +109,7 @@ module fixing_block_assembly(screw = def_screw) pose([55, 180, 25], [0, 4.8, 4.8
 assembly(str("fixing_block_M", 20 * screw_radius(screw))) {
    translate_z(fixing_block_height(screw))
        rotate([0, 180, 0])
-            color(pp1_colour) render() fixing_block(screw);
+            stl_colour(pp1_colour) render() fixing_block(screw);

    insert = screw_insert(screw);

--- a/printed/flat_hinge.scad
+++ b/printed/flat_hinge.scad
@@ -82,7 +82,7 @@ module hinge_male(type, female = false) {       //! The half with the stationary
    teardrop_r = kr / cos(22.5);                // The corner on the teardrop
    inset = sqrt(sqr(teardrop_r + gap) - sqr(kr - t)) - kr;

-    linear_extrude(height =t)
+    linear_extrude(t)
        difference() {
            hull() {
                for(side = [-1, 1])
@@ -102,7 +102,7 @@ module hinge_male(type, female = false) {       //! The half with the stationary
        rotate([90, 0, -90])
            for(z = [0 : (female ? fn : mn) - 1])
                translate_z(-dir * w / 2 + z * dir * pitch + (female ? -fw - mw - gap : 0))
-                    linear_extrude(height = female ? fw : mw)
+                    linear_extrude(female ? fw : mw)
                        difference() {
                            hull() {
                                rotate(180)
@@ -133,17 +133,17 @@ assembly(str("hinge_", type[0])) { //! Assembled hinge

    vitamin(str(": Hinge pin ", w, " x ", 2 * hr, "mm"));

-    color(pp1_colour) hinge_male(type);
+    stl_colour(pp1_colour) hinge_male(type);

    translate([0, -kr, kr]) {
        rotate([0, 90, 0])
            explode(w + 10)
-                color("silver") cylinder(r = hr , h = w, center = true);
+                stl_colour("silver") cylinder(r = hr , h = w, center = true);

        rotate([-angle, 0, 0])
            translate([0, -kr, -kr])
                rotate(180)
-                     color(pp2_colour) hinge_female(type);
+                     stl_colour(pp2_colour) hinge_female(type);
    }
 }

--- a/printed/foot.scad
+++ b/printed/foot.scad
@@ -56,7 +56,7 @@ module foot(type = foot) { //! Generate STL
                        circle4n(r);
            }
        }
-        linear_extrude(height = t)
+        linear_extrude(t)
            difference() {
                circle(r1 + eps);

@@ -73,7 +73,7 @@ module foot_assembly(t = 0, type = foot, flip = false) { //! Assembly with faste
    screw_length = screw_longer_than(foot_thickness(type) + t + 2 * washer_thickness(washer) + nut_thickness(nut, true) - squeeze);

    vflip() explode(15, true) {
-        color(pp4_colour) foot(type);
+        stl_colour(pp4_colour) foot(type);

        if(t)
            explode(15, true)
@@ -116,7 +116,7 @@ module insert_foot(type = insert_foot) { //! Generate STL for foot with insert
                }
            }
        }
-        linear_extrude(height = h2 + eps)
+        linear_extrude(h2 + eps)
            difference() {
                circle(r5 + eps);

@@ -136,7 +136,7 @@ assembly("insert_foot") {
    insert = screw_insert(screw);

    vflip()
-        color(pp1_colour) insert_foot(type);
+        stl_colour(pp4_colour) insert_foot(type);

    translate_z(-foot_thickness(type))
        insert(insert);
--- a/printed/handle.scad
+++ b/printed/handle.scad
@@ -83,7 +83,7 @@ module handle_stl() { //! generate the STL
 module handle_assembly() pose([225, 0, 150], [0, 0, 14]) //! Printed part with inserts in place
 assembly("handle") {
    translate_z(handle_height())
-        color(pp1_colour) vflip() handle_stl();
+        stl_colour(pp1_colour) vflip() handle_stl();

    handle_screw_positions()
        vflip()
--- a/printed/pcb_mount.scad
+++ b/printed/pcb_mount.scad
@@ -62,7 +62,7 @@ module pcb_mount_ring()
    }

 module pcb_mount_washer_stl() //! A plastic washer to clamp a PCB
-    linear_extrude(height = washer_thickness)
+    linear_extrude(washer_thickness)
        pcb_mount_ring();

 module pcb_mount(pcb, height = 5, washers = true) { //! Make the STL of a pcb mount for the specified PCB.
@@ -85,10 +85,10 @@ module pcb_mount(pcb, height = 5, washers = true) { //! Make the STL of a pcb mo
            cube([pillar_x_pitch(pcb) - 2 * wall, frame_w, frame_t], center = true);

    pcb_mount_screw_positions(pcb)
-        linear_extrude(height = height)
+        linear_extrude(height)
            pcb_mount_ring();

-    linear_extrude(height = height + pcb_thickness(pcb) - layer_height)
+    linear_extrude(height + pcb_thickness(pcb) - layer_height)
        difference() {
            pcb_mount_screw_positions(pcb)
                pcb_mount_ring();
@@ -101,7 +101,7 @@ module pcb_mount_assembly(pcb, thickness, height = 5) { //! A PCB mount assembly
    translate_z(height)
        pcb(pcb);

-    color(pp1_colour) pcb_mount(pcb, washers = false);
+    stl_colour(pp1_colour) pcb_mount(pcb, washers = false);

    washer = screw_washer(screw);
    nut = screw_nut(screw);
@@ -110,7 +110,7 @@ module pcb_mount_assembly(pcb, thickness, height = 5) { //! A PCB mount assembly

    pcb_mount_screw_positions(pcb) {
        translate_z(height + t) {
-            color(pp2_colour) pcb_mount_washer_stl();
+            stl_colour(pp2_colour) pcb_mount_washer_stl();

            translate_z(washer_thickness)
                screw(screw, screw_length);
--- a/printed/printed_box.scad
+++ b/printed/printed_box.scad
@@ -129,7 +129,7 @@ module pbox_base(type) { //! Generate the STL for the base
    t = pbox_base(type);
    difference() {
        union() {
-            linear_extrude(height = t)
+            linear_extrude(t)
                offset(base_outset - 0.2)
                    pbox_inner_shape(type);

@@ -157,7 +157,7 @@ module pbox(type) { //! Generate the STL for the main case

    difference() {
        union() {
-            linear_extrude(height = total_height)
+            linear_extrude(total_height)
                offset(wall / 2) pbox_mid_shape(type);

            if($children > 2)
@@ -166,11 +166,11 @@ module pbox(type) { //! Generate the STL for the main case
        difference() {
            translate_z(top_thickness)
                union() {
-                    linear_extrude(height = height + eps)
+                    linear_extrude(height + eps)
                         offset(-wall / 2) pbox_mid_shape(type);

                     translate_z(height)                                     // Recess for the base
-                        linear_extrude(height = total_height - height)
+                        linear_extrude(total_height - height)
                            offset(base_outset)
                                pbox_inner_shape(type);
                }
@@ -181,11 +181,11 @@ module pbox(type) { //! Generate the STL for the main case
                        rounded_rectangle([pbox_width(type) + 2 * outset, pbox_depth(type) + 2 * outset, ledge_h], 1, center = false);

                        hull() {
-                            linear_extrude(height = ledge_h + eps)
+                            linear_extrude(ledge_h + eps)
                                offset(ledge_inset)
                                    pbox_inner_shape(type);

-                            linear_extrude(height = eps)
+                            linear_extrude(eps)
                                offset(ledge_outset)
                                     pbox_inner_shape(type);
                        }
@@ -221,7 +221,7 @@ module pbox_base_screws(type, thickness = 0)           //! Place the screws and
        pbox_screw_positions(type) {
            foot = pbox_foot(type);
            if(foot)
-                color(pp4_colour)
+                stl_colour(pp4_colour)
                    foot(foot);

            translate_z(foot ? foot_thickness(foot) : thickness)
--- a/printed/psu_shroud.scad
+++ b/printed/psu_shroud.scad
@@ -113,21 +113,21 @@ module psu_shroud(type, cable_d, name, cables = 1) { //! Generate the STL file f
    translate([centre_x, -centre_y]) {
        rounded_rectangle([depth - eps, width - eps, top], rad, center = false);

-        linear_extrude(height = height)
+        linear_extrude(height)
            difference() {
                shape();

                translate([depth / 2, width / 2 - 5])
                    square([2 * (depth - extent + terminal_clearance), 10], center = true);
        }
-        linear_extrude(height = height - terminal_block_height(tb) - psu_terminal_block_z(type) - terminal_clearance)
+        linear_extrude(height - terminal_block_height(tb) - psu_terminal_block_z(type) - terminal_clearance)
            shape();
    }
    // cable slots
    for(i = [0 : 1 : cables - 1])
        translate([centre_x - depth / 2 + wall / 2, -centre_y + (i - cables / 2 + 0.5) *  psu_shroud_cable_pitch(cable_d), height / 2])
            rotate([90, 0, 90])
-                linear_extrude(height = wall, center = true)
+                linear_extrude(wall, center = true)
                    difference() {
                        square([cable_d + eps, height], center = true);

@@ -147,7 +147,7 @@ assembly(str("PSU_shroud_", name)) {

    translate_z(psu_shroud_height(type))
        vflip()
-            color(pp1_colour) psu_shroud(type, cable_d, name, cables);
+            stl_colour(pp1_colour) psu_shroud(type, cable_d, name, cables);

    psu_shroud_hole_positions(type)
        vflip()
--- a/printed/ribbon_clamp.scad
+++ b/printed/ribbon_clamp.scad
@@ -83,7 +83,7 @@ module ribbon_clamp_assembly(ways) pose([55, 180, 25])  //! Printed part with in
    assembly(str("ribbon_clamp_", ways)) {
    h = ribbon_clamp_height();

-    color(pp1_colour) render()
+    stl_colour(pp1_colour) render()
        translate_z(h) vflip() ribbon_clamp(ways);

    ribbon_clamp_hole_positions(ways)
--- a/printed/screw_knob.scad
+++ b/printed/screw_knob.scad
@@ -48,7 +48,7 @@ module screw_knob(screw) { //! Generate the STL for a knob to fit the specified
                rotate(45)
                    circle(r = nut_trap_radius(screw_nut(screw)), $fn = 6);
        }
-        linear_extrude(height = knob_thickness, convexity = 3)
+        linear_extrude(knob_thickness, convexity = 3)
            difference() {
                polygon(points = [for(a = [0 : 359]) [wave(a) * sin(a), wave(a) * cos(a)]]);

@@ -62,7 +62,7 @@ module screw_knob_assembly(screw, length) //! Assembly with the screw in place
 assembly(str("screw_knob_M", 20 * screw_radius(screw), "_", length)) {
    translate_z(knob_height)
        vflip()
-            color(pp1_colour) screw_knob(screw);
+            stl_colour(pp1_colour) screw_knob(screw);

    translate_z(knob_height - knob_nut_trap_depth(screw))
        rotate(-45)
--- a/printed/socket_box.scad
+++ b/printed/socket_box.scad
@@ -52,12 +52,12 @@ module socket_box(type) { //! Generate STL of the backbox for the specified sock
    insert_hole_radius = insert_hole_radius(insert);

    difference() {
-        linear_extrude(height = height, convexity = 5)
+        linear_extrude(height, convexity = 5)
            face_plate(type);

        difference() {
            translate_z(base_thickness)
-                linear_extrude(height = height, convexity = 5)
+                linear_extrude(height, convexity = 5)
                     offset(-wall) offset(1) face_plate(type);

            for(side = [-1, 1])
@@ -92,7 +92,7 @@ assembly(str("socket_box_", type[0])) {
    screw = mains_socket_screw(type);
    insert = screw_insert(screw);

-    color(pp1_colour) render() socket_box(type);
+    stl_colour(pp1_colour) render() socket_box(type);

    mains_socket_hole_positions(type)
        translate_z(height)
--- a/printed/ssr_shroud.scad
+++ b/printed/ssr_shroud.scad
@@ -73,7 +73,7 @@ module ssr_shroud(type, cable_d, name) {    //! Generate the STL file for a spec
    translate([center_x, 0]) {
        rounded_rectangle([depth - eps, width - eps, top], rad, center = false);

-        linear_extrude(height = height) difference() {
+        linear_extrude(height) difference() {
            round(or = wall / 2 - eps, ir = 0) difference() {
                rounded_square([depth, width], rad);

@@ -91,7 +91,7 @@ module ssr_shroud(type, cable_d, name) {    //! Generate the STL file for a spec
    for(side = [-1, 1])
        translate([cable_x, side * (width / 2 - wall / 2), height / 2])
            rotate([90, 0, 0])
-                linear_extrude(height = wall, center = true)
+                linear_extrude(wall, center = true)
                    difference() {
                        square([cable_d + eps, height], center = true);

@@ -111,7 +111,7 @@ assembly(str("SSR_shroud_", name)) {

    translate_z(ssr_shroud_height(type))
        vflip()
-            color(pp1_colour) ssr_shroud(type, cable_d, name);
+            stl_colour(pp1_colour) ssr_shroud(type, cable_d, name);

    ssr_shroud_hole_positions(type)
        insert(insert);
@@ -135,7 +135,7 @@ module ssr_shroud_fastened_assembly(type, cable_d, thickness, name) //! Assembly

            *translate_z(cable_d / 2)
                rotate([90, 0, 0])
-                    color(grey20)
+                    stl_colour(grey20)
                        cylinder(d = cable_d, h = 20, center = true);
        }
 }
--- a/printed/strap_handle.scad
+++ b/printed/strap_handle.scad
@@ -77,7 +77,7 @@ module strap(length, type = strap) { //! Generate the STL for the rubber strap
    len = length - 2 * (wall + clearance);
    w = strap_width(type);

-    linear_extrude(height = strap_thickness(type), convexity = 3)
+    linear_extrude(strap_thickness(type), convexity = 3)
        difference() {
            rounded_square([len, w], w / 2 - eps);

@@ -119,12 +119,12 @@ module strap_end(type = strap) { //! Generate the STL for end piece
        }

    union() {
-        linear_extrude(height = z1)
+        linear_extrude(z1)
            with_hole()
                outer();

        translate_z(z1)
-            linear_extrude(height = strap_height(type) - z1)
+            linear_extrude(strap_height(type) - z1)
                difference() {
                    outer();

@@ -137,11 +137,11 @@ module strap_end(type = strap) { //! Generate the STL for end piece
                    }
                }

-        linear_extrude(height = strap_height(type) - layer_height)
+        linear_extrude(strap_height(type) - layer_height)
            with_hole()
                strap_boss_shape(type);

-        linear_extrude(height = z2)
+        linear_extrude(z2)
            with_hole()
                 offset(cnc_bit_r)
                    offset(-step - cnc_bit_r)
@@ -160,7 +160,7 @@ module strap_end(type = strap) { //! Generate the STL for end piece
 //
 module strap_end_assembly(type = strap)
 assembly("strap_end") {
-    color(pp1_colour)
+    stl_colour(pp1_colour)
        strap_end(type);

    translate_z(strap_height(type) + strap_key(type))
@@ -175,7 +175,7 @@ module strap_assembly(length, type = strap) { //! Assembly with screws in place

    screw_length = screw_shorter_than(washer_thickness(washer) + washer_thickness(penny) + insert_length(insert) + panel_clearance + counterbore);

-    color(pp4_colour) strap(length, type);
+    stl_colour(pp4_colour) strap(length, type);

    strap_screw_positions(length, type)
        translate_z(strap_height(type))
--- a/readme.md
+++ b/readme.md
@@ -903,7 +903,7 @@ Parametric green terminal blocks
 | ```gt_top(type)``` | Depth at the top |
 | ```gt_tube_h(type)``` | Height of optional tubes around the screws |
 | ```gt_y_offset(type)``` | Offset of the pins from centre of the depth |
-| ```gt_y_offset2(type)``` | Offset of the pins screws from the screws |
+| ```gt_y_offset2(type)``` | Offset of the pins from the screws |

 ### Modules
 | Module | Description |
@@ -1905,7 +1905,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 | Module | Description |
 |:--- |:--- |
 | ```barrel_jack(cutout = false)``` | Draw barrel power jack |
-| ```buzzer(height, diameter, colour)``` | Draw PCB buzzer with specified height, diameter and color |
+| ```buzzer(height, diameter, colour)``` | Draw PCB buzzer with specified height, diameter and colour |
 | ```chip(length, width, thickness, colour, cutout = false)``` | Draw a coloured cube to represent a chip, or other rectangular component |
 | ```flat_flex(cutout = false)``` | Draw flat flexistrip connector as used on RPI0 |
 | ```flex(cutout = false)``` | Draw flexistrip connector |
@@ -1923,7 +1923,9 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 | ```pcb_screw_positions(type)``` | Positions children at the mounting hole positions |
 | ```pcb_spacer(screw, height, wall = 1.8, taper = 0)``` | Generate STL for PCB spacer |
 | ```rj45(cutout = false)``` | Draw RJ45 Ethernet connector |
+| ```standoff(h, d, h2, d2)``` | Draw a standoff |
 | ```terminal_35(ways, colour = "blue")``` | Draw 3.5mm terminal block |
+| ```trimpot10(vertical, cutout = false)``` | Draw a ten turn trimpot |
 | ```uSD(size, cutout = false)``` | Draw uSD socket |
 | ```usb_Ax1(cutout = false)``` | Draw USB type A single socket |
 | ```usb_Ax2(cutout = false)``` | Draw USB type A dual socket |
@@ -1989,7 +1991,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 | Module | Description |
 |:--- |:--- |
 | ```barrel_jack(cutout = false)``` | Draw barrel power jack |
-| ```buzzer(height, diameter, colour)``` | Draw PCB buzzer with specified height, diameter and color |
+| ```buzzer(height, diameter, colour)``` | Draw PCB buzzer with specified height, diameter and colour |
 | ```chip(length, width, thickness, colour, cutout = false)``` | Draw a coloured cube to represent a chip, or other rectangular component |
 | ```flat_flex(cutout = false)``` | Draw flat flexistrip connector as used on RPI0 |
 | ```flex(cutout = false)``` | Draw flexistrip connector |
@@ -2007,7 +2009,9 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 | ```pcb_screw_positions(type)``` | Positions children at the mounting hole positions |
 | ```pcb_spacer(screw, height, wall = 1.8, taper = 0)``` | Generate STL for PCB spacer |
 | ```rj45(cutout = false)``` | Draw RJ45 Ethernet connector |
+| ```standoff(h, d, h2, d2)``` | Draw a standoff |
 | ```terminal_35(ways, colour = "blue")``` | Draw 3.5mm terminal block |
+| ```trimpot10(vertical, cutout = false)``` | Draw a ten turn trimpot |
 | ```uSD(size, cutout = false)``` | Draw uSD socket |
 | ```usb_Ax1(cutout = false)``` | Draw USB type A single socket |
 | ```usb_Ax2(cutout = false)``` | Draw USB type A dual socket |
@@ -2025,10 +2029,11 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | ```d_plug(DCONN15, pcb = true)``` |  D-type 15 way PCB mount plug |
 |   1 | ```pcb(DuetE)``` |  Duet 2 Ethernet electronics |
 |   1 | ```pcb(Duex2)``` |  Duex2 expansion board |
-|   1 | ```pcb(Duex5)``` |  Duex5 expasnion board |
+|   1 | ```pcb(Duex5)``` |  Duex5 expansion board |
 |   1 | ```pcb(EnviroPlus)``` |  Enviro+ |
 |   1 | ```pcb(ExtruderPCB)``` |  Extruder connection PCB |
 |   1 | ```pcb(Keyes5p1)``` |  Keyes5.1 Arduino Uno expansion board |
+|   1 | ```pcb(MT3608)``` |  MT3608 boost converter module |
 |   1 | ```pcb(Melzi)``` |  Melzi electronics |
 |   4 |  |  Micro SD card |
 |   1 | ```molex_254(2)``` |  Molex KK header 2 way |
@@ -2048,15 +2053,20 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | ```pcb(RAMPSEndstop)``` |  RAMPS Endstop Switch |
 |   1 | ```pcb(RPI3)``` |  Raspberry Pi 3 |
 |   1 | ```pcb(RPI0)``` |  Raspberry Pi Zero |
-|  16 | ```screw(M2_cap_screw, 25)``` |  Screw M2 cap x 25mm |
+|  12 | ```screw(M2_cap_screw, 16)``` |  Screw M2 cap x 16mm |
+|   4 | ```screw(M2_cap_screw, 20)``` |  Screw M2 cap x 20mm |
 |   2 | ```screw(M2p5_cap_screw, 16)``` |  Screw M2.5 cap x 16mm |
-|  12 | ```screw(M2p5_cap_screw, 20)``` |  Screw M2.5 cap x 20mm |
+|   4 | ```screw(M2p5_cap_screw, 20)``` |  Screw M2.5 cap x 20mm |
+|   4 | ```screw(M2p5_cap_screw, 25)``` |  Screw M2.5 cap x 25mm |
+|   4 | ```screw(M2p5_cap_screw, 30)``` |  Screw M2.5 cap x 30mm |
 |   4 | ```screw(M2p5_pan_screw, 20)``` |  Screw M2.5 pan x 20mm |
-|   8 | ```screw(M2p5_pan_screw, 25)``` |  Screw M2.5 pan x 25mm |
-|   4 | ```screw(M2p5_pan_screw, 35)``` |  Screw M2.5 pan x 35mm |
-|   8 | ```screw(M3_cap_screw, 30)``` |  Screw M3 cap x 30mm |
+|  12 | ```screw(M2p5_pan_screw, 25)``` |  Screw M2.5 pan x 25mm |
+|   4 | ```screw(M3_cap_screw, 16)``` |  Screw M3 cap x 16mm |
+|   4 | ```screw(M3_cap_screw, 30)``` |  Screw M3 cap x 30mm |
 |   4 | ```screw(M3_cap_screw, 35)``` |  Screw M3 cap x 35mm |
-|  12 | ```screw(M4_cap_screw, 35)``` |  Screw M4 cap x 35mm |
+|   8 | ```screw(M4_cap_screw, 30)``` |  Screw M4 cap x 30mm |
+|   4 | ```screw(M4_cap_screw, 35)``` |  Screw M4 cap x 35mm |
+|   1 | ```pcb(TP4056)``` |  TP4056 Li-lon Battery charger module |
 |   3 | ```terminal_35(2)``` |  Terminal block 2 way 3.5mm |
 |   2 | ```green_terminal(gt_2p54, 4)``` |  Terminal block 4 way 0.1" |
 |   1 |  |  USB A to Mini B lead |
@@ -2069,24 +2079,24 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 ### Printed
 | Qty | Filename |
 | ---:|:--- |
-|   4 | pcb_spacer20140.stl |
-|   4 | pcb_spacer20150.stl |
-|   4 | pcb_spacer20160.stl |
-|   4 | pcb_spacer20170.stl |
+|   4 | pcb_spacer2060.stl |
+|   4 | pcb_spacer2070.stl |
+|   4 | pcb_spacer2080.stl |
+|   4 | pcb_spacer2090.stl |
 |   4 | pcb_spacer25100.stl |
-|   4 | pcb_spacer25110_2.stl |
-|   4 | pcb_spacer25120_2.stl |
+|   4 | pcb_spacer25110.stl |
+|   4 | pcb_spacer25120.stl |
 |   4 | pcb_spacer25130_2.stl |
-|   4 | pcb_spacer25240.stl |
-|   2 | pcb_spacer2550.stl |
-|   4 | pcb_spacer2580.stl |
-|   4 | pcb_spacer2590.stl |
-|   4 | pcb_spacer30180.stl |
-|   4 | pcb_spacer30190.stl |
-|   4 | pcb_spacer30230.stl |
+|   4 | pcb_spacer25140_2.stl |
+|   4 | pcb_spacer25150_2.stl |
+|   4 | pcb_spacer25170.stl |
+|   2 | pcb_spacer2570.stl |
+|   4 | pcb_spacer30160.stl |
+|   4 | pcb_spacer30210.stl |
+|   4 | pcb_spacer3050.stl |
+|   4 | pcb_spacer40180.stl |
+|   4 | pcb_spacer40190.stl |
 |   4 | pcb_spacer40200.stl |
-|   4 | pcb_spacer40210.stl |
-|   4 | pcb_spacer40220.stl |


 <a href="#top">Top</a>
@@ -2377,10 +2387,10 @@ Linear rails with carriages.
 ### Modules
 | Module | Description |
 |:--- |:--- |
-| ```carriage(type, rail, end_color = grey20, wiper_color = grey20)``` | Draw the specified carriage |
+| ```carriage(type, rail, end_colour = grey20, wiper_colour = grey20)``` | Draw the specified carriage |
 | ```carriage_hole_positions(type)``` | Position children over screw holes |
 | ```rail(type, length)``` | Draw the specified rail |
-| ```rail_assembly(type, length, pos, carriage_end_color = grey20, carriage_wiper_color = grey20)``` | Rail and carriage assembly |
+| ```rail_assembly(type, length, pos, carriage_end_colour = grey20, carriage_wiper_colour = grey20)``` | Rail and carriage assembly |
 | ```rail_hole_positions(type, length, first = 0, screws = 100, both_ends = true)``` | Position children over screw holes |
 | ```rail_screws(type, length, thickness, screws = 100)``` | Place screws in the rail |

@@ -2739,7 +2749,7 @@ The "Soft" parameter can be used to determinesif the sheet material needs machin
 * If soft, wood screws will be used, with a pilot hole.
 * If not soft, either tapped holes or a clearance hole and nuts will be used to retain screws.

-The "Color" parameter is a quad-array: [R, G, B, Alpha], or can be a named color, see [OpenSCAD_User_Manual](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/The_OpenSCAD_Language#color).
+The "Colour" parameter is a quad-array: [R, G, B, Alpha], or can be a named colour, see [OpenSCAD_User_Manual](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/The_OpenSCAD_Language#color).

 For speed sheets should be modelled in 2D by subtracting holes from 2D templates made by ```sheet_2D()``` and then extruded to 3D with ```render_2D_sheet()```.
 Note that modules that drill holes will return a 2D object if ```h``` is set to 0 to facilitate this.
@@ -2761,8 +2771,8 @@ Note that modules that drill holes will return a 2D object if ```h``` is set to
 ### Modules
 | Module | Description |
 |:--- |:--- |
-| ```render_2D_sheet(type, color = false)``` | Extrude a 2D sheet template and give it the correct colour |
-| ```render_sheet(type, color = false)``` | Render a sheet in the correct colour after holes have been subtracted |
+| ```render_2D_sheet(type, colour = false)``` | Extrude a 2D sheet template and give it the correct colour |
+| ```render_sheet(type, colour = false)``` | Render a sheet in the correct colour after holes have been subtracted |
 | ```sheet(type, w, d, corners = [0, 0, 0, 0])``` | Draw specified sheet |
 | ```sheet_2D(type, w, d, corners = [0, 0, 0, 0])``` | 2D sheet template with specified size and optionally rounded corners |

@@ -3482,7 +3492,7 @@ Just a BOM entry at the moment and cable bundle size functions for holes, plus c
 | ```cable_tie_holes(cable_r, h = 100)``` | Holes to thread a ziptie through a panel to make a cable tie. |
 | ```mouse_hole(cable, h = 100, teardrop = false)``` | A mouse hole to allow a panel to go over a wire bundle. |
 | ```ribbon_cable(ways, length)``` | Add ribbon cable to the BOM |
-| ```wire(color, strands, length, strand = 0.2)``` | Add stranded wire to the BOM |
+| ```wire(colour, strands, length, strand = 0.2)``` | Add stranded wire to the BOM |

 ![wire](tests/png/wire.png)

@@ -3789,17 +3799,24 @@ of conductive panels, an extra layer of insulation.
 ---
 <a name="Carriers"></a>
 ## Carriers
-Adapts ESP12 module to 0.1" grid. See <https://hydraraptor.blogspot.com/2018/04/esp-12-module-breakout-adaptor.html>.
+Adapts ESP12 modules and various small PCBs to 0.1" grid. See <https://hydraraptor.blogspot.com/2018/04/esp-12-module-breakout-adaptor.html>.


 [printed/carriers.scad](printed/carriers.scad) Implementation.

 [tests/carriers.scad](tests/carriers.scad) Code for this example.

+### Functions
+| Function | Description |
+|:--- |:--- |
+| ```carrier_height()``` | Height of PCB carrier |
+
 ### Modules
 | Module | Description |
 |:--- |:--- |
 | ```ESP12F_carrier_stl()``` | Generate the STL for an ESP12 carrier |
+| ```MT3608_carrier_stl()``` | Generate the STL for an MT3608 carrier, two required |
+| ```TP4056_carrier_stl()``` | Generate the STL for an TP4056 carrier, two required |

 ![carriers](tests/png/carriers.png)

@@ -3807,6 +3824,8 @@ Adapts ESP12 module to 0.1" grid. See <https://hydraraptor.blogspot.com/2018/04/
 | Qty | Filename |
 | ---:|:--- |
 |   1 | ESP12F_carrier.stl |
+|   1 | MT3608_carrier.stl |
+|   1 | TP4056_carrier.stl |


 <a href="#top">Top</a>
@@ -5152,11 +5171,15 @@ Simple tube or ring
 ---
 <a name="BOM"></a>
 ## BOM
-Bill Of Materials generation via echo and the ```bom.py``` script. Also handles exploded assembly views and posing. Assembly instructions can precede the module
-definition that makes the assembly.
+Bill Of Materials generation via echo and the ```bom.py``` script. Also handles exploded assembly views and posing.
+Assembly instructions can precede the module definition that makes the assembly.

-The example below shows how to define a vitamin and incorporate it into an assembly with sub-assemblies and make an exploded view. The resulting flat BOM is shown but
-heirachical BOMs are also generated for real projects.
+Assembly views shown in the instructions can be large or small and this is deduced by looking at the size of the printed parts involved and if any routed
+parts are used.
+This heuristic isn't always correct, so the default can be overridden by setting the ```big``` parameter of ```assembly``` to ```true``` or ```false```.
+
+The example below shows how to define a vitamin and incorporate it into an assembly with sub-assemblies and make an exploded view.
+The resulting flat BOM is shown but heirachical BOMs are also generated for real projects.


 [utils/core/bom.scad](utils/core/bom.scad) Implementation.
@@ -5175,7 +5198,7 @@ heirachical BOMs are also generated for real projects.
 ### Modules
 | Module | Description |
 |:--- |:--- |
-| ```assembly(name)``` | Name an assembly that will appear on the BOM, there needs to a module named ```<name>_assembly``` to make it |
+| ```assembly(name, big = undef)``` | Name an assembly that will appear on the BOM, there needs to a module named ```<name>_assembly``` to make it. ```big``` can force big or small assembly diagrams. |
 | ```dxf(name)``` | Name a dxf that will appear on the BOM, there needs to a module named ```<name>_dxf``` to make it |
 | ```explode(d, explode_children = false, offset = [0,0,0])``` | Explode children by specified Z distance or vector ```d```, option to explode grand children |
 | ```hidden()``` | Make item invisible, except on the BOM |
@@ -5186,6 +5209,7 @@ heirachical BOMs are also generated for real projects.
 | ```pose_hflip(exploded = undef)``` | Pose an STL or assembly for rendering to png by flipping around the Y axis, ```exploded = true for``` just the exploded view or ```false``` for unexploded only. |
 | ```pose_vflip(exploded = undef)``` | Pose an STL or assembly for rendering to png by flipping around the X axis, ```exploded = true for``` just the exploded view or ```false``` for unexploded only. |
 | ```stl(name)``` | Name an stl that will appear on the BOM, there needs to a module named ```<name>_stl``` to make it |
+| ```stl_colour(colour = pp1_colour, alpha = 1)``` | Colour an stl where it is placed in an assembly. ```alpha``` can be used to make it appear transparent. |
 | ```vitamin(description)``` | Describe a vitamin for the BOM entry and precede it with a module call that creates it, eg. "wigit(42): Type 42 widget" |

 ![bom](tests/png/bom.png)
--- a/scripts/bom.py
+++ b/scripts/bom.py
@@ -29,6 +29,7 @@ import openscad
 from time import *
 from set_config import *
 import json
+import re

 def find_scad_file(mname):
    for filename in os.listdir(source_dir):
@@ -45,9 +46,20 @@ def find_scad_file(mname):
                            return filename
    return None

+class Part:
+    def __init__(self, args):
+        self.count = 1
+        for arg in args:
+            arg = arg.replace('true',  'True').replace('false', 'False').replace('undef', 'None')
+            exec('self.' + arg)
+
+    def data(self):
+        return self.__dict__
+
 class BOM:
    def __init__(self, name):
        self.name = name
+        self.big = None
        self.count = 1
        self.vitamins = {}
        self.printed = {}
@@ -60,14 +72,20 @@ class BOM:
            assemblies[ass] = self.assemblies[ass].count
        return {
             "name"       : self.name,
+             "big"        : self.big,
             "count"      : self.count,
             "assemblies" : assemblies,
-             "vitamins"   : self.vitamins,
-             "printed"    : self.printed,
-             "routed"     : self.routed
+             "vitamins"   : {v : self.vitamins[v].data() for v in self.vitamins},
+             "printed"    : {p : self.printed[p].data() for p in self.printed},
+             "routed"     : {r : self.routed[r].data() for r in self.routed}
        }

    def add_part(self, s):
+        args = []
+        match = re.match(r'^(.*?\.stl|.*?\.dxf)\((.*)\)$', s)                             #look for name.stl(...) or name.dxf(...)
+        if match:
+            s = match.group(1)
+            args = [match.group(2)]
        if s[-4:] == ".stl":
            parts = self.printed
        else:
@@ -76,15 +94,19 @@ class BOM:
            else:
                parts = self.vitamins
        if s in parts:
-            parts[s] += 1
+            parts[s].count += 1
        else:
-            parts[s] = 1
+            parts[s] = Part(args)

-    def add_assembly(self, ass):
+    def add_assembly(self, ass, args = []):
        if ass in self.assemblies:
            self.assemblies[ass].count += 1
        else:
-            self.assemblies[ass] = BOM(ass)
+            bom = BOM(ass)
+            for arg in args:
+                arg = arg.replace('true',  'True').replace('false', 'False').replace('undef', 'None')
+                exec('bom.' + arg, locals())
+            self.assemblies[ass] = bom

    def make_name(self, ass):
        if self.count == 1:
@@ -119,10 +141,10 @@ class BOM:
                for ass in sorted(self.assemblies):
                    bom = self.assemblies[ass]
                    if part in bom.vitamins:
-                        file.write("%2d|" % bom.vitamins[part])
+                        file.write("%2d|" % bom.vitamins[part].count)
                    else:
                        file.write("  |")
-            print("%3d" % self.vitamins[part], description, file=file)
+            print("%3d" % self.vitamins[part].count, description, file=file)

        if self.printed:
            if self.vitamins:
@@ -133,10 +155,10 @@ class BOM:
                    for ass in sorted(self.assemblies):
                        bom = self.assemblies[ass]
                        if part in bom.printed:
-                            file.write("%2d|" % bom.printed[part])
+                            file.write("%2d|" % bom.printed[part].count)
                        else:
                            file.write("  |")
-                print("%3d" % self.printed[part], part, file=file)
+                print("%3d" % self.printed[part].count, part, file=file)

        if self.routed:
            print(file=file)
@@ -146,10 +168,10 @@ class BOM:
                    for ass in sorted(self.assemblies):
                        bom = self.assemblies[ass]
                        if part in bom.routed:
-                            file.write("%2d|" % bom.routed[part])
+                            file.write("%2d|" % bom.routed[part].count)
                        else:
                            file.write("  |")
-                print("%3d" % self.routed[part], part, file=file)
+                print("%3d" % self.routed[part].count, part, file=file)

        if self.assemblies:
            print(file=file)
@@ -161,17 +183,22 @@ def parse_bom(file = "openscad.log", name = None):
    main = BOM(name)
    main.ordered_assemblies = []
    stack = []
-
+    prog = re.compile(r'^(.*)\((.*)\)$')
    for line in open(file):
        pos = line.find('ECHO: "~')
        if pos > -1:
            s = line[pos + 8 : line.rfind('"')]
            if s[-1] == '{':
                ass = s[:-1]
+                args = []
+                match = prog.match(ass)                             #look for (...)
+                if match:
+                    ass = match.group(1)
+                    args = match.group(2).split(',')
                if stack:
                    main.assemblies[stack[-1]].add_assembly(ass)    #add to nested BOM
                stack.append(ass)
-                main.add_assembly(ass)                              #add to flat BOM
+                main.add_assembly(ass, args)                        #add to flat BOM
                if ass in main.ordered_assemblies:
                    main.ordered_assemblies.remove(ass)
                main.ordered_assemblies.insert(0, ass)
@@ -221,7 +248,7 @@ def boms(target = None, assembly = None):
    #
    # Run openscad
    #
-    openscad.run("-D","$bom=2","-D","$preview=true","-o", "openscad.echo", "-d", bom_dir + "/bom.deps", bom_maker_name)
+    openscad.run("-D", "$bom=2", "-D", "$preview=true", "--hardwarnings", "-o", "openscad.echo", "-d", bom_dir + "/bom.deps", bom_maker_name)
    os.remove(bom_maker_name)
    print("Generating bom ...", end=" ")

--- a/scripts/render.py
+++ b/scripts/render.py
@@ -29,6 +29,7 @@ import openscad
 from tests import do_cmd, update_image, colour_scheme, background
 from deps import mtime
 from colorama import init
+import json

 def usage():
    print("\nusage:\n\trender [target_config] - Render images of the stl and dxf files.");
@@ -48,6 +49,20 @@ def render(target, type):
    #
    parts = bom_to_parts(bom_dir, type)
    #
+    # Read the json bom to get the colours
+    #
+    bom_file = bom_dir + "/bom.json"
+    with open(bom_file) as json_file:
+        flat_bom = json.load(json_file)
+
+    things = { 'stl' : 'printed', 'dxf' : 'routed' }[type]
+    colours = {}
+    for ass in flat_bom:
+        for part in ass[things]:
+             obj = ass[things][part]
+             if "colour" in obj:
+                colours[part] = obj["colour"]
+    #
    # Remove unused png files
    #
    for file in os.listdir(target_dir):
@@ -55,7 +70,9 @@ def render(target, type):
            if not file[:-4] + '.' + type in parts:
                print("Removing %s" % file)
                os.remove(target_dir + '/' + file)
-
+    #
+    # Render the parts
+    #
    for part in parts:
        part_file = target_dir + '/' + part
        png_name = target_dir + '/' + part[:-4] + '.png'
@@ -64,10 +81,16 @@ def render(target, type):
        #
        if mtime(part_file) > mtime(png_name):
            png_maker_name = "png.scad"
+            pp1 = [0, 146/255, 0]
+            colour = pp1
+            if part in colours:
+                colour = colours[part]
+                if not '[' in colour:
+                    colour = '"' + colour + '"'
            with open(png_maker_name, "w") as f:
-                f.write('color([0, 146/255, 0]) import("%s");\n' % part_file)
+                f.write('color(%s) import("%s");\n' % (colour, part_file))
            cam = "--camera=0,0,0,70,0,315,500" if type == 'stl' else "--camera=0,0,0,0,0,0,500"
-            render = "--preview" if type == 'stl' else "--render"
+            render = "--preview" if type == 'stl' or colour != pp1 else "--render"
            tmp_name = 'tmp.png'
            openscad.run(colour_scheme, "--projection=p", "--imgsize=4096,4096", cam, render, "--autocenter", "--viewall", "-o", tmp_name, png_maker_name);
            do_cmd(("magick "+ tmp_name + " -trim -resize 280x280 -background %s -gravity Center -extent 280x280 -bordercolor %s -border 10 %s"
--- a/scripts/tests.py
+++ b/scripts/tests.py
@@ -232,9 +232,10 @@ def tests(tests):
                                    j = name.find(']]') + 2
                                    name = name.replace(name[i : j], '[ ... ]')
                                desc = vit[1]
-                                body += ['| %3d | %s | %s |' % (things[item], name, desc)]
+                                body += ['| %3d | %s | %s |' % (things[item]["count"], name, desc)]
                            else:
-                                body += ['| %3d | %s |' % (things[item], name)]
+                                count = things[item] if thing == 'assemblies' else things[item]["count"]
+                                body += ['| %3d | %s |' % (count, name)]
                        body += ['']

            body += ['\n<a href="#top">Top</a>']
--- a/scripts/views.py
+++ b/scripts/views.py
@@ -52,22 +52,23 @@ def bom_to_assemblies(bom_dir, bounds_map):
    # Decide if we need big or small assembly pictures
    #
    for bom in flat_bom:
-        big = False
-        for ass in bom["assemblies"]:
-            for b in flat_bom:
-                if b["name"] == ass:
-                    if b["big"]:
+        if  bom["big"] == None:
+            big = False
+            for ass in bom["assemblies"]:
+                for b in flat_bom:
+                    if b["name"] == ass:
+                        if b["big"]:
+                            big = True
+                        break
+            if not big:
+                for stl in bom["printed"]:
+                    bounds = bounds_map[stl]
+                    width = bounds[1][0] - bounds[0][0]
+                    depth = bounds[1][1] - bounds[0][1]
+                    if max(width, depth) > 80:
                        big = True
-                    break
-        if not big:
-            for stl in bom["printed"]:
-                bounds = bounds_map[stl]
-                width = bounds[1][0] - bounds[0][0]
-                depth = bounds[1][1] - bounds[0][1]
-                if max(width, depth) > 80:
-                    big = True
-                    break
-        bom["big"] = big or bom["routed"]
+                        break
+            bom["big"] = big or bom["routed"]
    #
    # Remove the main assembly if it is a shell
    #
@@ -247,9 +248,9 @@ def views(target, do_assemblies = None):
                for t in types:
                    for thing in ass[t]:
                        if thing in things[t]:
-                            things[t][thing] += ass[t][thing]
+                            things[t][thing] += ass[t][thing]["count"]
                        else:
-                            things[t][thing] = ass[t][thing]
+                            things[t][thing] = ass[t][thing]["count"]
            for ass in flat_bom:
                name = titalise(ass["name"][:-9]).replace(' ','&nbsp;')
                print('| <span style="writing-mode: vertical-rl; text-orientation: mixed;">%s</span> ' % name, file = doc_file, end = '')
@@ -264,7 +265,7 @@ def views(target, do_assemblies = None):
                    print(('|  ' * len(flat_bom) + '| | **%s** |') % heading, file = doc_file)
                    for thing in sorted(things[t], key = lambda s: s.split(":")[-1]):
                        for ass in flat_bom:
-                            count = ass[t][thing] if thing in ass[t] else 0
+                            count = ass[t][thing]["count"] if thing in ass[t] else 0
                            print('| %s ' % pad(count if count else '.', 2, 1), file = doc_file, end = '')
                            name = ass["name"]
                            if name in totals:
@@ -300,7 +301,7 @@ def views(target, do_assemblies = None):
                    print("|Qty|Description|",    file = doc_file)
                    print("|---:|:----------|",    file = doc_file)
                    for v in sorted(vitamins, key = lambda s: s.split(":")[-1]):
-                        print("|%d|%s|" % (vitamins[v], v.split(":")[1]),     file = doc_file)
+                        print("|%d|%s|" % (vitamins[v]["count"], v.split(":")[1]),     file = doc_file)
                    print("\n", file = doc_file)

                printed = ass["printed"]
@@ -309,7 +310,7 @@ def views(target, do_assemblies = None):
                    keys = sorted(list(printed.keys()))
                    for i in range(len(keys)):
                        p = keys[i]
-                        print('%s %d x %s |' % ('\n|' if not (i % 3) else '', printed[p], p), file = doc_file, end = '')
+                        print('%s %d x %s |' % ('\n|' if not (i % 3) else '', printed[p]["count"], p), file = doc_file, end = '')
                        if (i % 3) == 2 or i == len(printed) - 1:
                            n = (i % 3) + 1
                            print('\n|%s' % ('---|' * n), file =  doc_file)
@@ -325,7 +326,7 @@ def views(target, do_assemblies = None):
                    keys = sorted(list(routed.keys()))
                    for i in range(len(keys)):
                        r = keys[i]
-                        print('%s %d x %s |' % ('\n|' if not (i % 3) else '', routed[r], r), file = doc_file, end = '')
+                        print('%s %d x %s |' % ('\n|' if not (i % 3) else '', routed[r]["count"], r), file = doc_file, end = '')
                        if (i % 3) == 2 or i == len(routed) - 1:
                            n = (i % 3) + 1
                            print('\n|%s' % ('---|' * n), file =  doc_file)
--- a/tests/BOM.scad
+++ b/tests/BOM.scad
@@ -67,7 +67,7 @@ module widgit_dxf() {
 //! * Push the insert into the base with a soldering iron heated to 200&deg;C
 module widgit_base_assembly()
 assembly("widgit_base") {
-    color(pp1_colour)
+    stl_colour(pp1_colour)
        widgit_stl();

    translate_z(height)
--- a/tests/PCB.scad
+++ b/tests/PCB.scad
@@ -98,6 +98,8 @@ test_pcb = ["TestPCB", "Test PCB",
        [ 12, 444,   0, "2p54socket", 8, 1, undef, undef, undef, "red" ],
        [ 10, 470,   0, "standoff",  5, 4.5, 12.5, 2.54],
        [  6, 480, 180, "uSD", [12, 11.5, 1.4]],
+        [ 20, -5, 180, "trimpot10"],
+        [ 20, -15,  0, "trimpot10", true],
    ],
    // accessories
    []
--- a/tests/PCBs.scad
+++ b/tests/PCBs.scad
@@ -21,11 +21,16 @@ include <../vitamins/pcbs.scad>

 use <../utils/layout.scad>

-module pcbs()
+module pcbs() {
    layout([for(p = pcbs) pcb_width(p)], 10)
        translate([0, pcb_length(pcbs[$i]) / 2])
            rotate(90)
                pcb_assembly(pcbs[$i], 5 + $i, 3);

+    translate([0, 120])
+        layout([for(p = perfboards) pcb_length(p)], 10)
+            translate([0, -pcb_width(perfboards[$i]) / 2])
+                pcb_assembly(perfboards[$i], 5 + $i, 3);
+}
 if($preview)
    pcbs();
--- a/tests/cable_grommets.scad
+++ b/tests/cable_grommets.scad
@@ -22,14 +22,14 @@ use <../printed/cable_grommets.scad>

 module cable_grommets() {
    rotate(90)
-        color(pp1_colour) ribbon_grommet(20, 3);
+        stl_colour(pp1_colour) ribbon_grommet(20, 3);

    translate([20, 0])
        round_grommet_assembly(6, 3);

    translate([40, 0])
        rotate(90)
-            color(pp1_colour) mouse_grommet(5, 3);
+            stl_colour(pp1_colour) mouse_grommet(5, 3);
 }

 if($preview)
--- a/tests/carriers.scad
+++ b/tests/carriers.scad
@@ -19,7 +19,16 @@
 include <../utils/core/core.scad>
 use <../printed/carriers.scad>

-module carriers()
-    color(pp1_colour) ESP12F_carrier_stl();
+module carriers() {
+    stl_colour(pp1_colour) ESP12F_carrier_stl();
+
+    translate([0, 15])
+        rotate(90)
+            stl_colour(pp1_colour) TP4056_carrier_stl();
+
+    translate([0, 25])
+        rotate(90)
+            stl_colour(pp1_colour) MT3608_carrier_stl();
+}

 carriers();
--- a/tests/dogbones.scad
+++ b/tests/dogbones.scad
@@ -20,7 +20,7 @@ include <../global_defs.scad>
 use <../utils/dogbones.scad>

 module dogbones() {
-    #linear_extrude(height = eps)
+    #linear_extrude(eps)
        dogbone_square([10, 20]);

    #translate([15, 0])
--- a/tests/fan_guard.scad
+++ b/tests/fan_guard.scad
@@ -24,6 +24,6 @@ use <../utils/layout.scad>

 module fan_guards()
    layout([for(f = fans) fan_width(f)], 10)
-        color(pp1_colour) fan_guard(fans[$i], spokes = fan_width(fans[$i]) > 60 ? 8 : 4);
+        stl_colour(pp1_colour) fan_guard(fans[$i], spokes = fan_width(fans[$i]) > 60 ? 8 : 4);

 fan_guards();
--- a/tests/global.scad
+++ b/tests/global.scad
@@ -20,7 +20,7 @@
 include <../utils/core/core.scad>

 module globals() {
-    linear_extrude(height = eps) {
+    linear_extrude(eps) {
        semi_circle(r = 10);

        translate([30, 0])
--- a/tests/inserts.scad
+++ b/tests/inserts.scad
@@ -27,7 +27,7 @@ module inserts() {
        translate([10 * i, 0])
            insert(inserts[i]);

-    color(pp1_colour)
+    stl_colour(pp1_colour)
        translate([len(inserts) * 10, 0]) {
            insert_lug(inserts[0], 2, 1);

--- a/tests/layout.scad
+++ b/tests/layout.scad
@@ -22,7 +22,7 @@ use <../utils/layout.scad>
 diams = [3, 7, 5, 11];

 module layouts() {
-    linear_extrude(height = eps)
+    linear_extrude(eps)
        layout(diams, gap = 1)
            circle(d = diams[$i]);
 }
--- a/tests/light_strips.scad
+++ b/tests/light_strips.scad
@@ -29,7 +29,7 @@ module light_strips()
            for(end = [-1, 1])
                translate([end * (light_strip_cut_length(light, segs) / 2 - d / 2), 0])
                    rotate([90, 0, 90])
-                        color(pp1_colour) render()
+                        stl_colour(pp1_colour) render()
                            translate_z(-d / 2)
                                light_strip_clip(light);
        }
--- a/tests/png/carriers.png
+++ b/tests/png/carriers.png
--- a/tests/png/fan_guard.png
+++ b/tests/png/fan_guard.png
--- a/tests/png/fixing_block.png
+++ b/tests/png/fixing_block.png
--- a/tests/png/foot.png
+++ b/tests/png/foot.png
--- a/tests/png/modules.png
+++ b/tests/png/modules.png
--- a/tests/png/pcb.png
+++ b/tests/png/pcb.png
--- a/tests/png/pcbs.png
+++ b/tests/png/pcbs.png
--- a/tests/png/spools.png
+++ b/tests/png/spools.png
--- a/tests/png/stepper_motors.png
+++ b/tests/png/stepper_motors.png
--- a/tests/png/veroboard.png
+++ b/tests/png/veroboard.png
--- a/tests/polyholes.scad
+++ b/tests/polyholes.scad
@@ -34,7 +34,7 @@ module polyholes() {
                        children();
        }

-    color(pp1_colour) linear_extrude(height = 3, center = true)
+    stl_colour(pp1_colour) linear_extrude(3, center = true)
        difference() {
            square([100, 27]);

@@ -52,7 +52,7 @@ module polyholes() {
    sizes = [1.5, 2, 3, 4];
    for(i = [0 : len(sizes) - 1])
        translate([i * 10, -10]) {
-            color(pp1_colour)
+            stl_colour(pp1_colour)
                poly_tube(ir = ir, or = cir + sizes[i] * extrusion_width, h = 1);

            rod(2 * ir, 3);
--- a/tests/printed_box.scad
+++ b/tests/printed_box.scad
@@ -93,7 +93,7 @@ module box1_base_stl()

 module box1_assembly()
 assembly("box1") {
-    color(pp1_colour) render() box1_case_stl();
+    stl_colour(pp1_colour) render() box1_case_stl();

    pbox_inserts(box1);

@@ -142,7 +142,7 @@ module box2_base_stl()

 module box2_assembly()
 assembly("box2") {
-    color(pp1_colour) render() box2_case_stl();
+    stl_colour(pp1_colour) render() box2_case_stl();

    pbox_inserts(box2);

--- a/tests/quadrant.scad
+++ b/tests/quadrant.scad
@@ -22,7 +22,7 @@ use <../utils/quadrant.scad>


 module quadrants() {
-    linear_extrude(height = eps)
+    linear_extrude(eps)
        quadrant(10, 4);
 }

--- a/tests/round.scad
+++ b/tests/round.scad
@@ -28,14 +28,14 @@ module shape()
    }

 module rounds() {
-    linear_extrude(height = eps)
+    linear_extrude(eps)
        round(or = 4, ir = 2)
            shape();


    translate([50, 0])
        round_3D(or = 4, ir = 2, chamfer_base = true, $fn = 16)
-            linear_extrude(height = 40, center = true)
+            linear_extrude(40, center = true)
                shape();
 }

--- a/tests/rounded_cylinder.scad
+++ b/tests/rounded_cylinder.scad
@@ -22,7 +22,7 @@ use <../utils/rounded_cylinder.scad>


 module rounded_cylinders() {
-    linear_extrude(height = eps)
+    linear_extrude(eps)
        rounded_corner(10, 20, 3, 5);

    translate([30, 10])
--- a/tests/rounded_polygon.scad
+++ b/tests/rounded_polygon.scad
@@ -46,7 +46,7 @@ module rounded_polygons() {
    length = rounded_polygon_length(profile, tangents);

    rotate([70, 0, 315])
-        linear_extrude(height = eps)
+        linear_extrude(eps)
            rounded_polygon(profile, tangents);

    translate([0, -10])
--- a/tests/rounded_rectangle.scad
+++ b/tests/rounded_rectangle.scad
@@ -20,7 +20,7 @@
 include <../utils/core/core.scad>

 module rounded_rectangles() {
-    linear_extrude(height = eps)
+    linear_extrude(eps)
        rounded_square([30, 20], 3);

    translate([40, 0])
--- a/tests/sector.scad
+++ b/tests/sector.scad
@@ -22,7 +22,7 @@ use <../utils/sector.scad>


 module sectors() {
-    linear_extrude(height = eps)
+    linear_extrude(eps)
        sector(50, 45, 180);
 }

--- a/tests/teardrops.scad
+++ b/tests/teardrops.scad
@@ -20,10 +20,10 @@
 include <../utils/core/core.scad>

 module teardrops() {
-    color(pp1_colour)
+    stl_colour(pp1_colour)
        rotate([90, 0, -45])
            difference() {
-                linear_extrude(height = 3) {
+                linear_extrude(3) {
                    difference() {
                        square([80, 40]);

--- a/tests/tube.scad
+++ b/tests/tube.scad
@@ -22,7 +22,7 @@ use <../utils/tube.scad>


 module tubes() {
-    linear_extrude(height = eps)
+    linear_extrude(eps)
        ring(10, 8);

    translate([50, 10])
--- a/tests/wire.scad
+++ b/tests/wire.scad
@@ -54,9 +54,9 @@ module wires() {
            %cylinder(r = bundle_r, h = wire_l - 10, center = true);
        }

-    color(pp1_colour) {
+    stl_colour(pp1_colour) {
        rotate([90, 0, 90])
-            linear_extrude(height = thickness)
+            linear_extrude(thickness)
                difference() {
                    translate([-w / 2, 0])
                        square([w, h]);
@@ -65,7 +65,7 @@ module wires() {
                }

        translate_z(-thickness)
-            linear_extrude(height = thickness)
+            linear_extrude(thickness)
                difference() {
                    translate([thickness -d, -w / 2])
                        square([d, w]);
--- a/utils/annotation.scad
+++ b/utils/annotation.scad
@@ -26,7 +26,7 @@ include <../utils/core/core.scad>
 module label(str, scale = 0.25, valign = "baseline", halign = "left") //! Draw text that always faces the camera
    color("black")
        %rotate($vpr != [0, 0, 0] ? $vpr : [70, 0, 315])
-            linear_extrude(height = eps)
+            linear_extrude(eps)
                scale(scale)
                    text(str, valign = valign, halign = halign);

--- a/utils/core/bom.scad
+++ b/utils/core/bom.scad
@@ -18,11 +18,15 @@
 //

 //
-//! Bill Of Materials generation via echo and the ```bom.py``` script. Also handles exploded assembly views and posing. Assembly instructions can precede the module
-//! definition that makes the assembly.
+//! Bill Of Materials generation via echo and the ```bom.py``` script. Also handles exploded assembly views and posing.
+//! Assembly instructions can precede the module definition that makes the assembly.
 //!
-//! The example below shows how to define a vitamin and incorporate it into an assembly with sub-assemblies and make an exploded view. The resulting flat BOM is shown but
-//! heirachical BOMs are also generated for real projects.
+//! Assembly views shown in the instructions can be large or small and this is deduced by looking at the size of the printed parts involved and if any routed
+//! parts are used.
+//! This heuristic isn't always correct, so the default can be overridden by setting the ```big``` parameter of ```assembly``` to ```true``` or ```false```.
+//!
+//! The example below shows how to define a vitamin and incorporate it into an assembly with sub-assemblies and make an exploded view.
+//! The resulting flat BOM is shown but heirachical BOMs are also generated for real projects.
 //
 function bom_mode(n = 1) = $_bom >= n && (is_undef($on_bom) || $on_bom);  //! Current BOM mode, 0 = none, 1 = printed and routed parts and assemblies, 2 includes vitamins as well
 function exploded() = is_undef($exploded_parent) ? $exploded : 0;   //! Returns the value of ```$exploded``` if it is defined, else ```0```
@@ -80,10 +84,11 @@ module pose_vflip(exploded = undef)       //! Pose an STL or assembly for render
                children();


-module assembly(name) {                 //! Name an assembly that will appear on the BOM, there needs to a module named ```<name>_assembly``` to make it
-    if(bom_mode())
-        echo(str("~", name, "_assembly{"));
-
+module assembly(name, big = undef) {    //! Name an assembly that will appear on the BOM, there needs to a module named ```<name>_assembly``` to make it. ```big``` can force big or small assembly diagrams.
+    if(bom_mode()) {
+        args = is_undef(big) ? "" : str("(big=", big, ")");
+        echo(str("~", name, "_assembly", args, "{"));
+    }
    no_pose()
        if(is_undef($child_assembly))
            let($child_assembly = true)
@@ -96,14 +101,26 @@ module assembly(name) {                 //! Name an assembly that will appear on
        echo(str("~}", name, "_assembly"));
 }

+module stl_colour(colour = pp1_colour, alpha = 1) { //! Colour an stl where it is placed in an assembly. ```alpha``` can be used to make it appear transparent.
+    $stl_colour = colour;
+    color(colour, alpha)
+        children();
+}
+
 module stl(name) {                      //! Name an stl that will appear on the BOM, there needs to a module named ```<name>_stl``` to make it
-    if(bom_mode())
-        echo(str("~", name, ".stl"));
+    if(bom_mode()) {
+        colour = is_undef($stl_colour) ? pp1_colour : $stl_colour;
+        echo(str("~", name, ".stl(colour='", colour, "')"));
+    }
 }

 module dxf(name) {                      //! Name a dxf that will appear on the BOM, there needs to a module named ```<name>_dxf``` to make it
-    if(bom_mode())
-        echo(str("~", name, ".dxf"));
+    if(bom_mode()) {
+        if(is_undef($dxf_colour))
+            echo(str("~", name, ".dxf"));
+        else
+            echo(str("~", name, ".dxf(colour='", $dxf_colour, "')"));
+    }
 }

 function value_string(value) = is_string(value) ? str("\"", value, "\"") : str(value); //! Convert ```value``` to a string or quote it if it is already a string
--- a/utils/core/global.scad
+++ b/utils/core/global.scad
@@ -43,7 +43,7 @@ module ellipse(xr, yr) scale([1, yr / xr]) circle4n(xr);

 module extrude_if(h, center = true)                 //! Extrudes 2D object to 3D when ```h``` is nonzero, otherwise leaves it 2D
    if(h)
-        linear_extrude(height = h, center = center, convexity = 2) // 3D
+        linear_extrude(h, center = center, convexity = 2) // 3D
            children();
    else
        children();                                 // 2D
--- a/utils/core/rounded_rectangle.scad
+++ b/utils/core/rounded_rectangle.scad
@@ -28,6 +28,6 @@ module rounded_square(size, r, center = true) //! Like ```square()``` but with w

 module rounded_rectangle(size, r, center = true, xy_center = true) //! Like ```cube()``` but corners rounded in XY plane and separate centre options for xy and z.
 {
-    linear_extrude(height = size[2], center = center)
+    linear_extrude(size[2], center = center)
        rounded_square([size[0], size[1]], r, xy_center);
 }
--- a/utils/hanging_hole.scad
+++ b/utils/hanging_hole.scad
@@ -47,7 +47,7 @@ module hanging_hole(z, ir, h = 100, h2 = 100) { //! Hole radius ```ir``` hanging

            difference() {
                translate_z(-below)
-                    linear_extrude(height = below + 2 * layer_height)
+                    linear_extrude(below + 2 * layer_height)
                        children();

                rotate(infill_angle)
--- a/utils/tube.scad
+++ b/utils/tube.scad
@@ -29,5 +29,5 @@ module ring(or, ir) //! Create a ring with specified external and internal radii
        }

 module tube(or, ir, h, center = true) //! Create a tube with specified external and internal radii and height ```h```
-    linear_extrude(height = h, center = center, convexity = 5)
+    linear_extrude(h, center = center, convexity = 5)
        ring(or, ir);
--- a/vitamins/ball_bearing.scad
+++ b/vitamins/ball_bearing.scad
@@ -44,7 +44,7 @@ module ball_bearing(type) { //! Draw a ball bearing
    id = bb_bore(type);

    module tube(od, id, h)
-        linear_extrude(height = h, center = true, convexity = 5)
+        linear_extrude(h, center = true, convexity = 5)
            difference() {
                circle(d = od);
                circle(d = id);
--- a/vitamins/battery.scad
+++ b/vitamins/battery.scad
@@ -75,7 +75,7 @@ module battery(type) { //! Draw a battery
        if(battery_usb_offset(type))
            translate([battery_diameter(type) / 2, 0, len / 2 - battery_usb_offset(type) + h / 2])
                rotate([-90, 0, 90])
-                    linear_extrude(height = l + 1)
+                    linear_extrude(l + 1)
                        offset(delta = t)
                            D();
    }
@@ -87,14 +87,14 @@ module battery(type) { //! Draw a battery
        if(battery_usb_offset(type))
            translate([battery_diameter(type) / 2 - 1, 0, len / 2 - battery_usb_offset(type) + h / 2])
                rotate([-90, 0, 90]) {
-                    linear_extrude(height = l)
+                    linear_extrude(l)
                        difference() {
                            offset(t) D();
                            D();
                       }

                    translate_z(l - 1)
-                        linear_extrude(height = 1)
+                        linear_extrude(1)
                            D();
                }

@@ -132,7 +132,7 @@ module battery_contact(type, pos = true) { //! Draw a positive or negative batte

        translate([0, -h / 2, t])
            rotate([90, 0, 0])
-                linear_extrude(height = t)
+                linear_extrude(t)
                    difference() {
                        hull() {
                            translate([-tw / 2, -1])
--- a/vitamins/belt.scad
+++ b/vitamins/belt.scad
@@ -62,7 +62,7 @@ module belt(type, points, gap = 0, gap_pt = undef, belt_colour = grey20, tooth_c
                square([gap, thickness + eps], center = true);

    color(belt_colour)
-        linear_extrude(height = width, center = true)
+        linear_extrude(width, center = true)
            difference() {
                offset(thickness - belt_pitch_height(type)) shape();
                offset(-belt_pitch_height(type) + belt_tooth_height(type)) shape();
@@ -70,7 +70,7 @@ module belt(type, points, gap = 0, gap_pt = undef, belt_colour = grey20, tooth_c

            }
    color(tooth_colour)
-        linear_extrude(height = width, center = true)
+        linear_extrude(width, center = true)
            difference() {
                offset(-belt_pitch_height(type) + belt_tooth_height(type)) shape();
                offset(-belt_pitch_height(type)) shape();
--- a/vitamins/blower.scad
+++ b/vitamins/blower.scad
@@ -72,7 +72,7 @@ module blower(type) { //! Draw specified blower

    color(fan_colour) {
        // screw lugs
-        linear_extrude(height = blower_lug(type), center = false)
+        linear_extrude(blower_lug(type), center = false)
            for(hole = blower_screw_holes(type))
                difference() {
                    hull() {
@@ -94,7 +94,7 @@ module blower(type) { //! Draw specified blower
        *%square([length, width]);

        // base
-        linear_extrude(height = blower_base(type))
+        linear_extrude(blower_base(type))
            difference() {
                shape();

@@ -102,7 +102,7 @@ module blower(type) { //! Draw specified blower
                    circle(d = 2);
           }
        // sides
-        linear_extrude(height = depth)
+        linear_extrude(depth)
            difference() {
                shape();

@@ -112,7 +112,7 @@ module blower(type) { //! Draw specified blower

        // top
        translate_z(depth -blower_top(type))
-            linear_extrude(height = blower_top(type))
+            linear_extrude(blower_top(type))
                difference() {
                    shape();

--- a/vitamins/cable_strip.scad
+++ b/vitamins/cable_strip.scad
@@ -34,7 +34,7 @@ function cable_strip_thickness() = cable_strip_thickness;
 use <../utils/bezier.scad>
 use <../utils/sweep.scad>

-cable_strip_color = "green";
+cable_strip_colour = "green";

 function cable_strip_control_points(depth, min_z, pos) = let(z = min(min_z, min_z + pos))
 [
@@ -62,7 +62,7 @@ module bezier_cable_strip(ways, depth, length, below, extra, pos = 0) { //! Draw

    path = [v[0] + extra_v, each bezier_path(v, steps), v[3] + extra_v];

-    color(cable_strip_color)
+    color(cable_strip_colour)
        translate_z(-extra)
            sweep(path, rectangle_points(width, thickness));
    *echo(cable_strip_lengh = length);
@@ -89,7 +89,7 @@ module cable_strip(ways, depth, travel, extra = 15, pos = 0) {  //! Draw a cable

    vitamin(str("cable_strip(", ways, ", ", depth, ", ", travel, arg(extra, 15), "): Polypropylene strip ", total, "mm x ", w, "mm x ", thickness, "mm"));

-    color(cable_strip_color) linear_extrude(height = w, center = true, convexity = 4)
+    color(cable_strip_colour) linear_extrude(w, center = true, convexity = 4)
        difference() {
            union() {
                translate([-bottom, radius])
@@ -142,7 +142,7 @@ module elliptical_cable_strip(ways, p1, p2, pmax, extra = 15) {
                         [delta[2] / delta[0], 0, 1, delta[2] / 2],
                         [0, 0, 0, 1] ])

-        color(cable_strip_color) linear_extrude(height = w, center = true, convexity = 4)
+        color(cable_strip_colour) linear_extrude(w, center = true, convexity = 4)
            difference() {
                union()  {
                    square([(a + thickness) * 2, extra * 2], center = true);
--- a/vitamins/circlip.scad
+++ b/vitamins/circlip.scad
@@ -57,7 +57,7 @@ module internal_circlip(type, open = 0) { //! Draw specified internal circlip, o
    y_offset = (sqr(p.x) + sqr(p.y) - sqr(or - b)) / (or - b - p.y) / 2;
    ir = or - b + y_offset;
    color(circlip_colour)
-        linear_extrude(height = circlip_thickness(type), center = true)
+        linear_extrude(circlip_thickness(type), center = true)
            round((a - d5) / 5)
            union() {
                difference() {
--- a/vitamins/component.scad
+++ b/vitamins/component.scad
@@ -147,7 +147,7 @@ module al_clad_resistor(type, value, leads = true) { //! Draw an aluminium clad

    color("silver") {
        rotate([90, 0, 90])
-            linear_extrude(height = length, center = true)
+            linear_extrude(length, center = true)
                hull() {
                    translate([0, al_clad_height(type) / 2])
                        intersection() {
@@ -158,7 +158,7 @@ module al_clad_resistor(type, value, leads = true) { //! Draw an aluminium clad
                    translate([0, thickness / 2])
                        square([body, thickness], center = true);
                }
-        linear_extrude(height = thickness)
+        linear_extrude(thickness)
            difference() {
                for(end = [-1, 1])
                    translate([end * (length - tab) / 2, end * (width - width / 2) / 2])
@@ -176,7 +176,7 @@ module al_clad_resistor(type, value, leads = true) { //! Draw an aluminium clad
            for(end = [-1, 1])
                translate([end * (al_clad_wire_length(type) - terminal_l) / 2, 0, height / 2])
                    rotate([90, 0, 0])
-                        linear_extrude(height = terminal_t, center = true) difference() {
+                        linear_extrude(terminal_t, center = true) difference() {
                            square([terminal_l, terminal_h], center = true);

                            circle(r = 1);
@@ -226,7 +226,7 @@ module  TO220(description, leads = 3, lead_length = 16) { //! Draw a TO220 packa

    translate([0, -length + hole_y]) {
        color("silver") {
-            linear_extrude(height = TO220_thickness())
+            linear_extrude(TO220_thickness())
                difference() {
                    translate([-width / 2, inset])
                        square([width, length - inset]);
@@ -305,7 +305,7 @@ module panel_USBA() { //! Draw a panel mount USBA connector

    vflip() {
        color("dimgrey")  {
-            linear_extrude(height = thickness)
+            linear_extrude(thickness)
                difference() {
                    hull()
                        for(side = [-1, 1])
@@ -345,14 +345,14 @@ module panel_USBA() { //! Draw a panel mount USBA connector
            }

            translate_z(height3)
-                linear_extrude(height = l - height3)
+                linear_extrude(l - height3)
                    difference() {
                        rounded_square([length2, width], r = r1);

                        square([w - flange_t, h - flange_t], center = true);
                    }

-            linear_extrude(height = height3)
+            linear_extrude(height3)
                difference() {
                    rounded_square([length2, width], r = r1);

@@ -363,7 +363,7 @@ module panel_USBA() { //! Draw a panel mount USBA connector
        *cube([12, 4.5, 32], center = true);

        color("silver") {
-            linear_extrude(height = l)
+            linear_extrude(l)
                difference() {
                    square([w, h], center = true);

@@ -373,7 +373,7 @@ module panel_USBA() { //! Draw a panel mount USBA connector
            translate_z(l - flange_t / 2)
                cube([w, h, flange_t], center = true);

-            linear_extrude(height = flange_t)
+            linear_extrude(flange_t)
                difference() {
                    union() {
                        square([h_flange_l, h + 2 * h_flange_h], center = true);
@@ -418,7 +418,7 @@ module thermal_cutout(type) { //! Draw specified thermal cutout
    spade = spade6p4;

    color("silver") {
-        linear_extrude(height = tc_thickness(type))
+        linear_extrude(tc_thickness(type))
            difference() {
                hull()
                    for(side = [-1, 1])
--- a/vitamins/d_connector.scad
+++ b/vitamins/d_connector.scad
@@ -23,9 +23,9 @@
 include <../utils/core/core.scad>
 use <../utils/thread.scad>

-d_pillar_color                   = grey90;
-d_plug_shell_color               = grey80;
-d_plug_insulator_color           = grey20;
+d_pillar_colour                   = grey90;
+d_plug_shell_colour               = grey80;
+d_plug_insulator_colour           = grey20;

 function  d_flange_length(type)    = type[1];   //! Length of the flange
 function  d_lengths(type)          = type[2];   //! Lengths of the D for plug and socket
@@ -56,20 +56,20 @@ module d_pillar() { //! Draw a pillar for a D-connector

    translate_z(-screw_length)
        if(show_threads)
-            male_metric_thread(screw, pitch, screw_length, false, top = 0, colour = d_pillar_color);
+            male_metric_thread(screw, pitch, screw_length, false, top = 0, colour = d_pillar_colour);
        else
-            color(d_pillar_color)
+            color(d_pillar_colour)
                cylinder(d = screw, h = screw_length + 1);

-    color(d_pillar_color) {
-        linear_extrude(height = height)
+    color(d_pillar_colour) {
+        linear_extrude(height)
            difference() {
                circle(r = rad, $fn = 6);
                circle(d = screw);
            }
        }
    if(show_threads)
-        female_metric_thread(screw, pitch, height, false, colour = d_pillar_color);
+        female_metric_thread(screw, pitch, height, false, colour = d_pillar_colour);
 }

 module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specified D plug, which can be IDC, PCB or plain solder bucket
@@ -106,8 +106,8 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi
    //
    // Shell
    //
-    color(d_plug_shell_color)  {
-        linear_extrude(height =  d_flange_thickness(type))
+    color(d_plug_shell_colour)  {
+        linear_extrude( d_flange_thickness(type))
            difference() {
                rounded_square([flange_length, flange_width], 2);

@@ -115,7 +115,7 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi
                    circle(hole_r);
            }

-        linear_extrude(height = front_height, convexity = 5)
+        linear_extrude(front_height, convexity = 5)
            difference() {
                D(d_length, d_width, 2.5);
                D(d_length - 2 * dwall, d_width - 2 * dwall, 2.5 - dwall);
@@ -123,21 +123,21 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi

        if(!idc)
            rotate([0,180,0])
-                linear_extrude(height = back_height, convexity = 5)
+                linear_extrude(back_height, convexity = 5)
                    D(d_lengths(type)[0] + 2 * dwall, d_widths(type)[0] + 2 * dwall, 2.5 + dwall);

    }
    //
    // Insulator
    //
-    color(d_plug_insulator_color) {
+    color(d_plug_insulator_colour) {
        translate_z(d_flange_thickness(type) + eps)
            rotate([0, 180, 0])
-                linear_extrude(height = back_height + 1 + d_flange_thickness(type), convexity = 5)
+                linear_extrude(back_height + 1 + d_flange_thickness(type), convexity = 5)
                    D(d_length - dwall, d_width - dwall, 2.5 - dwall/2);

        if(socket)
-            linear_extrude(height = front_height - eps, convexity = 5)
+            linear_extrude(front_height - eps, convexity = 5)
                difference() {
                    D(d_length - dwall, d_width - dwall, 2.5 - dwall/2);

@@ -169,11 +169,11 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi

        if(pcb)
           rotate([0, 180, 0]) {
-                linear_extrude(height = back_height + 1 + 4.5)
+                linear_extrude(back_height + 1 + 4.5)
                    pin_positions()
                         circle(r = 0.75 / 2, $fn = 12);

-                linear_extrude(height = back_height + 1 + 1)
+                linear_extrude(back_height + 1 + 1)
                    pin_positions()
                         circle(r = 0.75, $fn = 12);
            }
@@ -183,7 +183,7 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi
                pin_positions()
                    rotate(180 + ($i % 2) * 180)
                    render() difference() {
-                        linear_extrude(height = 8)
+                        linear_extrude(8)
                            difference() {
                                circle(1);

--- a/vitamins/fan.scad
+++ b/vitamins/fan.scad
@@ -80,10 +80,10 @@ module fan(type) { //! Draw specified fan, origin in the centre
        if(middle > 0) {
            for(z = [-1, 1])
                translate_z(z * (depth - thickness) / 2)
-                    linear_extrude(height = thickness, center = true)
+                    linear_extrude(thickness, center = true)
                        shape();

-            linear_extrude(height = middle, center = true)
+            linear_extrude(middle, center = true)
                difference() {
                    shape();
                    difference() {
@@ -100,13 +100,13 @@ module fan(type) { //! Draw specified fan, origin in the centre
                }
        }
        else
-            linear_extrude(height = depth, center = true)
+            linear_extrude(depth, center = true)
                shape();

        // Blades
        blade_ir = fan_hub(type) / 2 - 1;
        blade_len = fan_bore(type) / 2 - 0.75 - blade_ir;
-        linear_extrude(height = depth - 1, center = true, convexity = 4, twist = -30, slices = round(depth / 2))
+        linear_extrude(depth - 1, center = true, convexity = 4, twist = -30, slices = round(depth / 2))
            for(i = [0 : fan_blades(type) - 1])
                rotate((360 * i) / fan_blades(type))
                    translate([blade_ir, -1.5 / 2])
--- a/vitamins/fuseholder.scad
+++ b/vitamins/fuseholder.scad
@@ -68,7 +68,7 @@ module fuseholder(thickness) { //! Fuseholder with nut in place for specified pa
                color(colour) {
                    tube(or = nut_d / 2, ir = thread_d / 2, h = nut_flange_t, center = false);

-                    linear_extrude(height = nut_t)
+                    linear_extrude(nut_t)
                        difference() {
                            circle(d = nut_d, $fn = 6);

@@ -87,7 +87,7 @@ module fuseholder(thickness) { //! Fuseholder with nut in place for specified pa

            cylinder(r = 5, h = flange_t - 1);

-            linear_extrude(height = flange_t)
+            linear_extrude(flange_t)
                difference() {
                    circle(r = 5);

@@ -96,7 +96,7 @@ module fuseholder(thickness) { //! Fuseholder with nut in place for specified pa

            vflip() {
                if(!show_threads)
-                    linear_extrude(height = thread)
+                    linear_extrude(thread)
                        intersection() {
                            circle(d = thread_d - 0.3);

@@ -127,7 +127,7 @@ module fuseholder(thickness) { //! Fuseholder with nut in place for specified pa
            for(side = [-1, 1])
                translate([side * contact_slot_d / 2, 0, contact_slot_z])
                    rotate([0, -70, 90 - side * 90])
-                        linear_extrude(height = contact_t, center = true) difference() {
+                        linear_extrude(contact_t, center = true) difference() {
                            hull() {
                                square([eps, contact_w], center = true);

--- a/vitamins/geared_stepper.scad
+++ b/vitamins/geared_stepper.scad
@@ -61,7 +61,7 @@ module geared_stepper(type) { //! Draw the specified geared stepper

        cylinder(d = gs_boss_d(type), h = 2 * gs_boss_h(type), center = true);

-        linear_extrude(height = gs_lug_t(type))
+        linear_extrude(gs_lug_t(type))
            difference() {
                hull()
                    geared_stepper_screw_positions(type)
@@ -78,7 +78,7 @@ module geared_stepper(type) { //! Draw the specified geared stepper
        color(brass) {
            d = gs_shaft_d(type);
            h = gs_shaft_length(type);
-            linear_extrude(height = h)
+            linear_extrude(h)
                intersection() {
                    circle(d = d);

@@ -95,7 +95,7 @@ module geared_stepper(type) { //! Draw the specified geared stepper

        h2 = gs_bulge2_h(type);
        translate([0, - offset, h1 + 1 - h2])
-            linear_extrude(height = h2)
+            linear_extrude(h2)
                round(0.5)
                    intersection() {
                        circle(gs_bulge2_d(type));
--- a/vitamins/green_terminal.scad
+++ b/vitamins/green_terminal.scad
@@ -36,7 +36,7 @@ function gt_front_t(type)      = type[10];  //! Thickness of frame around the fr
 function gt_box_w(type)        = type[11];  //! Width inside the cable entry box
 function gt_box_h(type)        = type[12];  //! Height of the cable entry box
 function gt_y_offset(type)     = type[13];  //! Offset of the pins from centre of the depth
-function gt_y_offset2(type)    = type[14];  //! Offset of the pins screws from the screws
+function gt_y_offset2(type)    = type[14];  //! Offset of the pins from the screws
 function gt_tube_h(type)       = type[15];  //! Height of optional tubes around the screws

 module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green terminal blocks, skip can be used to remove pins.
@@ -80,7 +80,7 @@ module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green t

        color(colour) {
            rotate([90, 0, 0])
-                linear_extrude(height = pitch, center = true, convexity = 5)
+                linear_extrude(pitch, center = true, convexity = 5)
                    polygon(points = [                          // Vertical section
                        [y + depth / 2,                  0],
                        [y + depth / 2,                  ledge_height / 2 - box_h1 / 2],
@@ -105,7 +105,7 @@ module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green t
                    ]);

            translate([y2, 0, ledge_height / 2 + box_h2 / 2])   // Screw socket
-                linear_extrude(height = height - ledge_height / 2 - box_h2 / 2)
+                linear_extrude(height - ledge_height / 2 - box_h2 / 2)
                    difference() {
                        square([screw_r * 2 + 0.1, pitch], center = true);

@@ -113,7 +113,7 @@ module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green t
                    }


-            linear_extrude(height = ledge_height)
+            linear_extrude(ledge_height)
                intersection() {
                    horizontal_section();

@@ -121,7 +121,7 @@ module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green t
                        square([10, 10]);
                }

-            linear_extrude(height = back)
+            linear_extrude(back)
                intersection() {
                    horizontal_section();

@@ -131,7 +131,7 @@ module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green t

            if(tube_h)
                translate([y2, 0, height])
-                    linear_extrude(height = tube_h - height)
+                    linear_extrude(tube_h - height)
                        intersection() {
                            ring(or = top / 2, ir = screw_r);

@@ -141,37 +141,37 @@ module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green t
        }
        if(!skip)
            color("silver") {
-                    slot_depth = 1;
-                    screw_top = height - 0.5;
-                    pin_l = 3.3;
-                    translate([y2, 0]) {
-                        translate_z(screw_top - 2 * slot_depth)        // screw head
-                            cylinder(r = screw_r, h = slot_depth);
+                slot_depth = 1;
+                screw_top = height - 0.5;
+                pin_l = 3.3;
+                translate([y2, 0]) {
+                    translate_z(screw_top - 2 * slot_depth)        // screw head
+                        cylinder(r = screw_r, h = slot_depth);

-                        translate_z(screw_top - slot_depth)         // screw head
-                            linear_extrude(height = slot_depth)
-                                difference() {
-                                    circle(screw_r);
+                    translate_z(screw_top - slot_depth)         // screw head
+                        linear_extrude(slot_depth)
+                            difference() {
+                                circle(screw_r);

-                                    square([10, screw_r / 4], center = true);
-                                }
-                    }
-                    translate([box_back, 0, ledge_height / 2]) {
-                        rotate([0, 90, 0])
-                            linear_extrude(height = box_front - box_back)
-                                difference() {
-                                    square([box_h2, box_w2], center = true);
-
-                                    square([box_h2 - 0.1, box_w2 - 0.1], center = true);
-
-                                }
-
-                        cube([1, box_w2, box_h2], center = true); // terminal back
-                    }
-
-                    translate_z(-pin_l)
-                        cube([0.44, 0.75, pin_l]);     // pin
+                                square([10, screw_r / 4], center = true);
+                            }
                }
+                translate([box_back, 0, ledge_height / 2]) {
+                    rotate([0, 90, 0])
+                        linear_extrude(box_front - box_back)
+                            difference() {
+                                square([box_h2, box_w2], center = true);
+
+                                square([box_h2 - 0.1, box_w2 - 0.1], center = true);
+
+                            }
+
+                    cube([1, box_w2, box_h2], center = true); // terminal back
+                }
+
+                translate_z(-pin_l / 2)
+                    cube([0.44, 0.75, pin_l], center = true);     // pin
+            }
    }
    for(i = [0: ways - 1])
        translate([0, i * pitch - width / 2 + pitch / 2])
--- a/vitamins/hygrometer.scad
+++ b/vitamins/hygrometer.scad
@@ -69,7 +69,7 @@ module hygrometer() { //! Draw a hygrometer
            cylinder(d = apperture_d, h = eps);

        color("black")
-            linear_extrude(height = 0.2, center = true) {
+            linear_extrude(0.2, center = true) {
                translate([0, 3])
                    text("20_4", font = "7 segment", valign = "bottom", halign = "center", size = apperture_d / 6);

--- a/vitamins/iec.scad
+++ b/vitamins/iec.scad
@@ -137,7 +137,7 @@ module iec(type) { //! Draw specified IEC connector
    color(grey20) {
        // Flange
        flange_t = iec_flange_t(type);
-        linear_extrude(height = flange_t)
+        linear_extrude(flange_t)
            difference() {
                hull() {
                    rounded_square([iec_flange_w(type), iec_flange_h(type)], iec_flange_r(type));
@@ -164,7 +164,7 @@ module iec(type) { //! Draw specified IEC connector
                }
        // Bezel
        translate_z(iec_flange_t(type))
-            linear_extrude(height = iec_bezel_t(type))
+            linear_extrude(iec_bezel_t(type))
                difference() {
                    rounded_square([iec_bezel_w(type), iec_bezel_h(type)], iec_bezel_r(type));

@@ -174,7 +174,7 @@ module iec(type) { //! Draw specified IEC connector
        // Body
        h = socket_d - iec_flange_t(type) - iec_bezel_t(type);
        translate_z(-h)
-            linear_extrude(height = h)
+            linear_extrude(h)
                difference() {
                    body_shape();

@@ -182,7 +182,7 @@ module iec(type) { //! Draw specified IEC connector
                }
        // Back
        translate_z(-iec_depth(type))
-            linear_extrude(height = iec_depth(type) - h)
+            linear_extrude(iec_depth(type) - h)
                body_shape();
    }
    if(!iec_male(type))
--- a/vitamins/insert.scad
+++ b/vitamins/insert.scad
@@ -108,10 +108,10 @@ module insert_boss(type, z, wall = 2 * extrusion_width) { //! Make a boss to tak
        hull()
            poly_ring(or, ir);

-    linear_extrude(height = z)
+    linear_extrude(z)
        poly_ring(or, ir);

-    linear_extrude(height = z - insert_hole_length(type))
+    linear_extrude(z - insert_hole_length(type))
        difference() {
            shape();

@@ -119,7 +119,7 @@ module insert_boss(type, z, wall = 2 * extrusion_width) { //! Make a boss to tak
        }

    if(z > insert_hole_length(type) + 2 * layer_height)
-        linear_extrude(height = 2 * layer_height)       // cap the end if room
+        linear_extrude(2 * layer_height)       // cap the end if room
            shape();
 }

@@ -143,7 +143,7 @@ module insert_lug(insert, wall, counter_bore = 0, extension = 0, corner_r = 0, f
        }

    translate_z(-boss_h)
-        linear_extrude(height = boss_h)
+        linear_extrude(boss_h)
             difference() {
                shape();

@@ -152,7 +152,7 @@ module insert_lug(insert, wall, counter_bore = 0, extension = 0, corner_r = 0, f

    // insert boss counter_bore
    translate_z(-boss_h2) {
-        linear_extrude(height = counter_bore + eps)
+        linear_extrude(counter_bore + eps)
             difference() {
                shape();

@@ -162,7 +162,7 @@ module insert_lug(insert, wall, counter_bore = 0, extension = 0, corner_r = 0, f
        // support cone
        if(flying)
            hull() {
-                linear_extrude(height = eps)
+                linear_extrude(eps)
                    shape();

                translate([boss_r + extension - wall - eps, 0, - (2 * boss_r + extension - wall)])
--- a/vitamins/jack.scad
+++ b/vitamins/jack.scad
@@ -206,7 +206,7 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
        nut_t = 2.3;

        color(silver)
-            linear_extrude(height = nut_t) difference() {
+            linear_extrude(nut_t) difference() {
                circle(d = 6.3 / cos(30), $fn = 6);

                circle(d = thread_d);
@@ -229,7 +229,7 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
            cylinder(d = d, h = base_h);

            translate_z(-collar_t)
-                linear_extrude(height = base_h) {
+                linear_extrude(base_h) {
                    circle(post_4mm_hole_radius - 0.1);

                    spigot();
@@ -284,7 +284,7 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
    explode(-15)
        color(actual_colour) {
            translate_z(-thickness - base_h) {
-                linear_extrude(height = base_h)
+                linear_extrude(base_h)
                    difference() {
                        circle(d = d);

--- a/vitamins/jhead.scad
+++ b/vitamins/jhead.scad
@@ -52,7 +52,7 @@ module heater_block(type, resistor, thermistor) {
    color(brass) {
        render() difference() {
            rotate([90, 0, 0])
-                linear_extrude(height = heater_width(type), center = true) difference() {
+                linear_extrude(heater_width(type), center = true) difference() {
                    square([heater_length(type), h], center = true);

                    translate([resistor_x(type), 0])
--- a/vitamins/kp_pillow_block.scad
+++ b/vitamins/kp_pillow_block.scad
@@ -25,7 +25,7 @@ use <../utils/tube.scad>
 use <washer.scad>
 use <ball_bearing.scad>

-kp_pillow_block_color = grey70;
+kp_pillow_block_colour = grey70;

 function kp_diameter(type)        = type[1]; //! Rod hole diameter
 function kp_hole_offset(type)     = type[2]; //! Rod hole offset
@@ -50,7 +50,7 @@ module kp_pillow_block(type) { //! Draw the KP pillow block
    b = type[11];
    bolthole_radius = type[12];

-    color(kp_pillow_block_color)
+    color(kp_pillow_block_colour)
        translate([0, -H, 0]) {
            fillet = 1;
            squareSizeX = (L - H0) / 2 + fillet;
--- a/vitamins/ldr.scad
+++ b/vitamins/ldr.scad
@@ -71,17 +71,17 @@ module LDR(type, lead_length = 3) { //! Draw an LDR, can specify the lead length
    t = ldr_thickness(type);

    color("white")
-        linear_extrude(height = t - 0.4)
+        linear_extrude(t - 0.4)
            shape();

    color("orange")
        translate_z(t - 0.4)
-            linear_extrude(height = 0.1)
+            linear_extrude(0.1)
                shape();

    color([0.9, 0.9, 0.9])
        translate_z(t - 0.3)
-            linear_extrude(height = 0.1)
+            linear_extrude(0.1)
                difference() {
                    offset(-serpentine_t())
                        shape();
@@ -100,6 +100,6 @@ module LDR(type, lead_length = 3) { //! Draw an LDR, can specify the lead length
            }
    color([1, 1, 1, 0.25])
        translate_z(t - 0.3 + eps)
-            linear_extrude(height = 0.3)
+            linear_extrude(0.3)
                shape();
 }
--- a/vitamins/leadnut.scad
+++ b/vitamins/leadnut.scad
@@ -64,7 +64,7 @@ module leadnut(type) { //! Draw specified leadnut
                thread(bore_d, lead, h, thread_profile(pitch / 2, pitch * 0.366, 30), false, starts = lead / pitch, female = true, solid = false);

            translate_z(leadnut_flange_offset(type))
-                linear_extrude(height = leadnut_flange_t(type))
+                linear_extrude(leadnut_flange_t(type))
                    difference() {
                        circle(d = leadnut_flange_dia(type));

--- a/vitamins/led.scad
+++ b/vitamins/led.scad
@@ -40,7 +40,7 @@ module led(type, colour = "red", lead = 5) { //! Draw specified LED with desired
        rotate_extrude()
            rounded_corner(r = d / 2, h = led_height(type), r2 =  d / 2);

-        linear_extrude(height = led_rim_t(type))
+        linear_extrude(led_rim_t(type))
            difference() {
                circle(d = led_rim_dia(type));

--- a/vitamins/light_strip.scad
+++ b/vitamins/light_strip.scad
@@ -85,7 +85,7 @@ module light_strip(type, segs = undef) { //! Draw specified light strip, segs ca

    color("silver")
        rotate([90, 0, 90])
-            linear_extrude(height = l, center = true)
+            linear_extrude(l, center = true)
                polygon([
                    [ x1,  0], [ x1,  d], [ x2,  d], [ x3, y5], [ x3, y4], [ x2, y4],
                    [ x2, y3], [ x3, y3], [ x3, y2], [ x2, y2], [ x2, y1],
@@ -99,42 +99,42 @@ module light_strip(type, segs = undef) { //! Draw specified light strip, segs ca

    translate_z(y4) {
        color("white")
-            linear_extrude(height = 1.6)
+            linear_extrude(1.6)
                led_positions()
                    square([5, 5], center = true);

        color("yellow")
-            linear_extrude(height = 1.6 + eps)
+            linear_extrude(1.6 + eps)
                led_positions()
                    circle(d = 3.5);

        color("silver")
-            linear_extrude(height = 0.8)
+            linear_extrude(0.8)
                led_positions()
                    for(side = [-1,1], end = [-1:1])
                        translate([side * 2.2, end * 1.6])
                            square([1, 0.9], center = true);

        color("black")
-            linear_extrude(height = 0.1)
+            linear_extrude(0.1)
                segment_positions(segments - 1)
                    translate([segment_length, 0])
                        square([0.2, a], center = true);

        color("silver")
-            linear_extrude(height = 0.15)
+            linear_extrude(0.15)
                segment_positions()
                    for(end = [-1, 1], side = [-1, 1])
                        translate([end * (segment_length / 2 - 1.25) + segment_length / 2, side * 2.5])
                            square(2.5, center = true);

        color("silver")
-            linear_extrude(height = 0.55)
+            linear_extrude(0.55)
                resistor_positions()
                    square([3.2, 1.5], center = true);

        color("black")
-            linear_extrude(height = 0.55 + eps)
+            linear_extrude(0.55 + eps)
                resistor_positions()
                    square([2.1, 1.5 + 2 * eps], center = true);

@@ -152,7 +152,7 @@ function light_strip_clip_length(light) = light_strip_clip_slot(light) + 2 * wal
 function light_strip_clip_width(light) = light_strip_depth(light) + 2 * wall;       //! Outside width

 module light_strip_clip(light) { //! Make a clip to go over the strip to be incorporated into a bracket
-    linear_extrude(height = light_strip_clip_depth(light), convexity = 2)
+    linear_extrude(light_strip_clip_depth(light), convexity = 2)
        difference() {
            translate([-light_strip_clip_length(light) / 2, -wall])
                square([light_strip_clip_length(light), light_strip_clip_width(light)]);
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Chris Palmer	8f282775a4	Fixed green terminal pin centering.	2020-04-08 19:15:38 +01:00
Chris Palmer	bf833b0452	Fixed some typos	2020-04-08 19:13:06 +01:00
Chris Palmer	52011fd6f7	Renders of dxfs now use the sheet colour.	2020-04-07 22:07:28 +01:00
Chris Palmer	9da8634769	Bom generation now calls openscad with --hardwarnings to stop ASAP.	2020-04-07 19:36:38 +01:00
Chris Palmer	147ff9b24f	Added alpha parameter to stl_colour()	2020-04-07 17:02:10 +01:00
Chris Palmer	b4379907a2	Updated gallery	2020-04-06 16:21:58 +01:00
Chris Palmer	3be88f6517	Some more stl_colours.	2020-04-06 15:02:50 +01:00
Chris Palmer	d42f99e437	stl_colour() now used in tests and examples.	2020-04-06 10:27:17 +01:00
Chris Palmer	65455930f8	Reverted incorrect use of stl_colour().	2020-04-05 18:51:21 +01:00
Chris Palmer	7e0c5fdb6e	Renders of STLs are now the correct colour. Fixes #71	2020-04-05 16:18:24 +01:00
Chris Palmer	bc4e18d788	The assembly module now has a big parameter to force large or small views.	2020-04-04 12:06:14 +01:00
Chris Palmer	f5980b4703	Made the ground surfaces of steppers lighter.	2020-04-02 19:54:30 +01:00
Chris Palmer	7b3d7fab55	Fixed some more colour spellings	2020-03-29 21:36:11 +01:00
Chris Palmer	654571a70e	Colour now always spelt colour except the call to color().	2020-03-29 20:39:17 +01:00
Chris Palmer	e8abcde52f	Removed the height parameter from linear_extrude	2020-03-29 20:18:57 +01:00
Chris Palmer	390957fdd0	Added MT3608 and TP4065 PCBs. Perfboards now have their own row in the test to shorten the picture.	2020-03-28 10:54:06 +00:00
Chris Palmer	bde8cbe7a6	Added cutout for trimpot10.	2020-03-28 10:51:43 +00:00
Chris Palmer	fbe8533a42	Added function to get the height of pcb carriers.	2020-03-27 17:30:35 +00:00
Chris Palmer	a9c2f854c6	Can now have rectangular lands on PCB holes.	2020-03-27 17:29:50 +00:00
Chris Palmer	6187d90c57	Added 10 turn trimpots	2020-03-27 17:28:20 +00:00
Chris Palmer	65f320141d	Added printed carriers for MT3608 and TP4056 modules.	2020-03-26 22:33:05 +00:00
Chris Palmer	d367e743da	Image churn due to change of computer.	2020-03-24 17:30:10 +00:00