Merge branch 'MS3FGX-SOIC'

Changed motor wire colours and tweaked wire position and size,

CHANGELOG.md

@@ -3,6 +3,52 @@
 This changelog is generated by `changelog.py` using manually added semantic version tags to classify commits as breaking changes, additions or fixes.
 
 
+### [v20.9.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.9.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.8.0...v20.9.0 "diff with v20.8.0")
+*   2022-07-02 [`2cc3c6e`](https://github.com/nophead/NopSCADlib/commit/2cc3c6ec7c9d8ee285d49111559d40fb2a3112e1 "show commit") [C.](# "Chris") Updated images and readme.
+
+*   2022-07-02 [`633843d`](https://github.com/nophead/NopSCADlib/commit/633843d45eacd42619581a4619752700e1cd687b "show commit") [C.](# "Chris") Added LED1206 example to PCB test.
+
+*   2022-07-02 [`1a472c8`](https://github.com/nophead/NopSCADlib/commit/1a472c8ed549e230f7df93989f3e1db729b4b281 "show commit") [M.](# "MS3FGX") Add 1206 SMD LED
+
+### [v20.8.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.8.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.7.0...v20.8.0 "diff with v20.7.0")
+*   2022-06-23 [`ecd534b`](https://github.com/nophead/NopSCADlib/commit/ecd534b5773928b9987023bd4370f661cc750fbd "show commit") [C.P.](# "Chris Palmer") Added `NEMA_connection_pos()`.
+Changed motor wire colours and tweaked wire position and size,
+
+### [v20.7.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.7.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.6.1...v20.7.0 "diff with v20.6.1")
+*   2022-06-21 [`28c36a4`](https://github.com/nophead/NopSCADlib/commit/28c36a4e966cceccbbdc330cf9a6fdeaa0283889 "show commit") [C.P.](# "Chris Palmer") `rounded_polygon()` now copes with the degenerate case when tangents intersect to form a sharp corner with no arc.
+Added an `offset()` function with some limitations.
+
+#### [v20.6.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.6.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.6.0...v20.6.1 "diff with v20.6.0")
+*   2022-06-21 [`6a9af0a`](https://github.com/nophead/NopSCADlib/commit/6a9af0af8aef68978b8be248810d07c85150341b "show commit") [C.P.](# "Chris Palmer") Updates images
+
+*   2022-06-21 [`a6a0808`](https://github.com/nophead/NopSCADlib/commit/a6a08088d986dbcbc4d01c06e0475176ec8bc76f "show commit") [M.B.](# "Martin Budden") Fixed dimensions of E1515 extrusion.
+
+*   2022-06-21 [`bcf9fb3`](https://github.com/nophead/NopSCADlib/commit/bcf9fb38dfabaf93508a380b85b12e3b23f28cf8 "show commit") [M.B.](# "Martin Budden") Fixed typos.
+
+*   2022-06-21 [`06443a5`](https://github.com/nophead/NopSCADlib/commit/06443a558b407292a1e73f60c24cc90ec618d511 "show commit") [M.B.](# "Martin Budden") Standardised setting of imgsize in scripts.
+
+### [v20.6.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.6.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.5.1...v20.6.0 "diff with v20.5.1")
+*   2022-06-14 [`18f3d43`](https://github.com/nophead/NopSCADlib/commit/18f3d43780d7e083fc3b21290db2049fb4364a46 "show commit") [C.P.](# "Chris Palmer") Added convexity parameter to `clip()`.
+
+#### [v20.5.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.5.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.5.0...v20.5.1 "diff with v20.5.0")
+*   2022-06-14 [`eda88cc`](https://github.com/nophead/NopSCADlib/commit/eda88cc8d75eb4c0cb59b368b4e2ad3db2115834 "show commit") [C.P.](# "Chris Palmer") Fixed `vero()` constructor documentation.
+Fixed missing space in veroboard vitamin description.
+
+*   2022-06-14 [`630268d`](https://github.com/nophead/NopSCADlib/commit/630268d71a0b478c28b6bde2a7c3ff9074c7a8fb "show commit") [C.P.](# "Chris Palmer") Changed `screw_knob()` facets to be suitable for 3D printing.
+Fixed `knob_height()` so it can take a screw as a type.
+
+### [v20.5.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.5.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.4.0...v20.5.0 "diff with v20.4.0")
+*   2022-05-31 [`cc5654d`](https://github.com/nophead/NopSCADlib/commit/cc5654d7d756287f5311e35104003f38a4a94475 "show commit") [C.](# "Chris") Added `usb_miniA()`.
+
+### [v20.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.3.1...v20.4.0 "diff with v20.3.1")
+*   2022-04-01 [`d46913c`](https://github.com/nophead/NopSCADlib/commit/d46913ce4f64656889fd29dccc0709d84d4d9c49 "show commit") [C.P.](# "Chris Palmer") Printed `screw_knob()` is now fully customisable by passing a parameter
+list, constructed by `screw_knob(),` in place of the screw.
+
+ * Screws can still be passed for backwards compatibility.
+
+#### [v20.3.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.3.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.3.0...v20.3.1 "diff with v20.3.0")
+*   2022-04-01 [`b9f676a`](https://github.com/nophead/NopSCADlib/commit/b9f676a75369d666540f79abe0392e209e20d0f0 "show commit") [C.P.](# "Chris Palmer") Documented `insert_hole_length()`.
+
 ### [v20.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.2.0...v20.3.0 "diff with v20.2.0")
 *   2022-03-17 [`ddc4150`](https://github.com/nophead/NopSCADlib/commit/ddc4150ed73c8300bc3ef4326a91cd4ec54ed9e3 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
 

printed/screw_knob.scad

@@ -19,6 +19,8 @@
 
 //
 //! Knob with embedded hex head screw.
+//!
+//! Most aspects can be customised, e.g. the flange thickness and radius. It can also be solid or just a wall and be wavey edged or fluted.
 //
 include <../core.scad>
 use <../utils/hanging_hole.scad>
@@ -37,7 +39,9 @@ function screw_knob(screw, wall = 2, stem_h = 6, flange_t = 4, flange_r = 9, sol
     [screw, wall, stem_h, flange_t, flange_r, solid, waves, wave_amp, fluted];
 
 function knob_nut_trap_depth(screw) = round_to_layer(screw_head_height(screw));
-function knob_height(type) = screw_knob_stem_h(type) + screw_knob_flange_t(type); //! Total height of the knob
+function knob_height(type) = //! Total height of the knob
+    let(type = !is_list(type[0]) ? screw_knob(type) : type)
+        screw_knob_stem_h(type) + screw_knob_flange_t(type);
 
 module screw_knob(type) { //! Generate the STL for a knob to fit the specified hex screw
     type = !is_list(type[0]) ? screw_knob(type) : type;         // Allow just the screw to be specified for backwards compatability
@@ -52,13 +56,14 @@ module screw_knob(type) { //! Generate the STL for a knob to fit the specified h
     waves = screw_knob_waves(type);
 
     function wave(a) = flange_r - amp / 2 + sin(a * waves) * amp / 2;
-    points = [for(a = [0 : 359]) wave(a) * [sin(a), cos(a)]];
+    fn = r2sides(flange_r);
+    points = [for(i = [0 : fn - 1], a = i * 360 / fn) wave(a) * [sin(a), cos(a)]];
     solid = screw_knob_solid(type);
 
     module shape()
         if(screw_knob_fluted(type))
             difference() {
-                circle(flange_r, $fn = 360);
+                circle4n(flange_r);
 
                 c = flange_r * sin(90 / waves);            // Flute half chord
                 d = flange_r - flange_r * cos(90 / waves); // Distance from chord to perimeter
@@ -67,7 +72,7 @@ module screw_knob(type) { //! Generate the STL for a knob to fit the specified h
                 for(i = [0 : waves - 1])
                     rotate(360 * i / waves)
                         translate([0, flange_r - amp + flute_r])
-                            circle(flute_r, $fn = 360);
+                            circle4n(flute_r);
             }
         else
             polygon(points);

readme.md

@@ -2403,6 +2403,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 | `usb_Ax2(cutout = false)` | Draw USB type A dual socket |
 | `usb_B(cutout = false)` | Draw USB B connector |
 | `usb_C(cutout = false)` | Draw USB C connector |
+| `usb_miniA(cutout = false)` | Draw USB mini A connector |
 | `usb_uA(cutout = false)` | Draw USB micro A connector |
 | `vero_pin(cropped = false)` | Draw a vero pin |
 
@@ -2439,12 +2440,16 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | `ax_res(res1_8, 1e+6, tol = 1)` |  Resistor 1e+6 Ohms 1% 0.125W |
 |   1 | `smd_led(LED0603, orange)` |  SMD LED 0603 orange |
 |   1 | `smd_led(LED0805, red)` |  SMD LED 0805 red |
+|   1 | `smd_led(LED1206, blue)` |  SMD LED 1306 blue |
 |   1 | `smd_capacitor(CAP0603)` |  SMD capacitor 0603 |
 |   1 | `smd_capacitor(CAP0805)` |  SMD capacitor 0805 |
 |   1 | `smd_capacitor(CAP1206)` |  SMD capacitor 1206 |
 |   1 | `smd_resistor(RES0603, 1K)` |  SMD resistor 0603 1K 0.1W |
 |   1 | `smd_resistor(RES0805, 1K)` |  SMD resistor 0805 1K 0.125W |
 |   1 | `smd_resistor(RES1206, 1K)` |  SMD resistor 1206 1K 0.25W |
+|   1 | `smd_soic(SOIC16)` |  SOIC16 package ICL323 |
+|   1 | `smd_soic(SOIC18)` |  SOIC18 package PIC18F88 |
+|   1 | `smd_soic(SOIC8)` |  SOIC8 package M34063 |
 |   1 | `smd_sot(SOT223)` |  SOT223 package LM117 |
 |   1 | `smd_sot(SOT23)` |  SOT23 package 2N7000 |
 |   1 | `square_button(button_4p5mm)` |  Square button 4.5mm |
@@ -2553,6 +2558,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 | `usb_Ax2(cutout = false)` | Draw USB type A dual socket |
 | `usb_B(cutout = false)` | Draw USB B connector |
 | `usb_C(cutout = false)` | Draw USB C connector |
+| `usb_miniA(cutout = false)` | Draw USB mini A connector |
 | `usb_uA(cutout = false)` | Draw USB micro A connector |
 | `vero_pin(cropped = false)` | Draw a vero pin |
 
@@ -3641,6 +3647,12 @@ Surface mount components for PCBs.
 | `smd_res_end_cap(type)` | End cap width |
 | `smd_res_power(type)` | Power rating in Watts |
 | `smd_res_size(type)` | Body length, width and height |
+| `smd_soic_lead_pitch(type)` | Lead pitch |
+| `smd_soic_lead_size(type)` | Lead width, foot depth, lead thickness |
+| `smd_soic_lead_span(type)` | Total span of leads |
+| `smd_soic_lead_z(type)` | Top of lead frame from top |
+| `smd_soic_size(type)` | Body length, width and height |
+| `smd_soic_z(type)` | Height above PCB surface |
 | `smd_sot_lead_pitch(type)` | Lead pitch |
 | `smd_sot_lead_size(type)` | Lead width, foot depth, lead thickness |
 | `smd_sot_lead_span(type)` | Total span of leads |
@@ -3662,6 +3674,7 @@ Surface mount components for PCBs.
 | `smd_capacitor(type, height, value = undef)` | Draw an SMD capacitor with specified height |
 | `smd_led(type, colour, cutout)` | Draw an SMD LED with specified `colour` |
 | `smd_resistor(type, value)` | Draw an SMD resistor with specified value |
+| `smd_soic(type, value)` | Draw an SMD SOIC |
 | `smd_sot(type, value)` | Draw an SMD transistor |
 
 ![smds](tests/png/smds.png)
@@ -3671,12 +3684,16 @@ Surface mount components for PCBs.
 | ---:|:--- |:---|
 |   1 | `smd_led(LED0603, green)` |  SMD LED 0603 green |
 |   1 | `smd_led(LED0805, blue)` |  SMD LED 0805 blue |
+|   1 | `smd_led(LED1206, red)` |  SMD LED 1306 red |
 |   1 | `smd_capacitor(CAP0603)` |  SMD capacitor 0603 |
 |   1 | `smd_capacitor(CAP0805)` |  SMD capacitor 0805 |
 |   1 | `smd_capacitor(CAP1206)` |  SMD capacitor 1206 |
 |   1 | `smd_resistor(RES0603, 1R0)` |  SMD resistor 0603 1R0 0.1W |
 |   1 | `smd_resistor(RES0805, 10M)` |  SMD resistor 0805 10M 0.125W |
 |   1 | `smd_resistor(RES1206, 100K)` |  SMD resistor 1206 100K 0.25W |
+|   1 | `smd_soic(SOIC16)` |  SOIC16 package SOIC16 |
+|   1 | `smd_soic(SOIC18)` |  SOIC18 package SOIC18 |
+|   1 | `smd_soic(SOIC8)` |  SOIC8 package SOIC8 |
 |   1 | `smd_sot(SOT223)` |  SOT223 package FZT851 |
 |   1 | `smd_sot(SOT23)` |  SOT23 package 2N7000 |
 
@@ -3885,6 +3902,7 @@ NEMA stepper motor model.
 | Function | Description |
 |:--- |:--- |
 | `NEMA_big_hole(type)` | Clearance hole for the big boss |
+| `NEMA_connection_pos(type, jst_connector = false)` | Position of the wires or the connector |
 | `NEMA_holes(type)` | Screw positions for for loop |
 
 ### Modules
@@ -4244,7 +4262,7 @@ Veroboard with mounting holes, track breaks, removed tracks, solder points and c
 ### Functions
 | Function | Description |
 |:--- |:--- |
-| `vero(name, assembly, holes, strips, pitch = inch(0.1)` | Constructor |
+| `vero(name, assembly, holes, strips, pitch = 2.54, fr4 = false, screw = M3_cap_screw, mounting_holes = [], breaks = [], no_tracks = [], components = [], joints = [])` | Constructor |
 | `vero_length(type)` | Length of the board |
 | `vero_size(type)` | Board size |
 | `vero_thickness(type)` | Thickness of the substrate |
@@ -4272,7 +4290,7 @@ Veroboard with mounting holes, track breaks, removed tracks, solder points and c
 |   4 | `nut(M3_nut, nyloc = true)` |  Nut M3 x 2.4mm nyloc |
 |   4 | `screw(M3_dome_screw, 25)` |  Screw M3 dome x 25mm |
 |   2 | `green_terminal(gt_2p54, 10)` |  Terminal block 10 way 0.1" |
-|   2 | `veroboard(z_vb)` |  Veroboard 5 holes x 22strips |
+|   2 | `veroboard(z_vb)` |  Veroboard 5 holes x 22 strips |
 |   8 | `washer(M3_washer)` |  Washer  M3 x 7mm x 0.5mm |
 
 ### Printed
@@ -5914,6 +5932,8 @@ Clamp for ribbon cable and polypropylene strip or one or more ribbon cables.
 ## Screw_knob
 Knob with embedded hex head screw.
 
+Most aspects can be customised, e.g. the flange thickness and radius. It can also be solid or just a wall and be wavey edged or fluted.
+
 [printed/screw_knob.scad](printed/screw_knob.scad) Implementation.
 
 [tests/screw_knob.scad](tests/screw_knob.scad) Code for this example.
@@ -6604,6 +6624,8 @@ Because the tangents need to be calculated to find the length these can be calcu
 | Function | Description |
 |:--- |:--- |
 | `circle_tangent(p1, p2)` | Compute the clockwise tangent between two circles represented as [x,y,r] |
+| `line_intersection(l0, l1)` | Return the point where two 2D lines intersect or undef if they don't. |
+| `offset(points, offset)` | Offset a 2D polygon, breaks for concave shapes and negative offsets if the offset is more than half the smallest feature size. |
 | `rounded_polygon(points, _tangents = undef)` | Return the rounded polygon from the point list, can pass the tangent list to save it being calculated |
 | `rounded_polygon_arcs(points, tangents)` | Compute the arcs at the points, for each point [angle, rotate_angle, length] |
 | `rounded_polygon_length(points, tangents)` | Calculate the length given the point list and the list of tangents computed by `rounded_polygon_tangents` |
@@ -6879,7 +6901,7 @@ Original version by Doug Moen on the OpenSCAD forum
 | Module | Description |
 |:--- |:--- |
 | `box(xmin, ymin, zmin, xmax, ymax, zmax)` | Construct a box given its bounds |
-| `clip(xmin = -inf, ymin = -inf, zmin = -inf, xmax = inf, ymax = inf, zmax = inf)` | Clip child to specified boundaries |
+| `clip(xmin = -inf, ymin = -inf, zmin = -inf, xmax = inf, ymax = inf, zmax = inf, convexity = 1)` | Clip child to specified boundaries |
 
 ![clip](tests/png/clip.png)
 

scripts/changelog.py

@@ -157,7 +157,7 @@ if __name__ == '__main__':
                         break
                     j += 1
 
-                # Print verson info
+                # Print version info
                 print('%s [%s](%s "show release") %s %s' % ('#' * (level + 1), ver, url + '/releases/tag/' + ver, type, diff), file = file)
 
             # Print commits excluding merges

scripts/render.py

@@ -26,7 +26,7 @@ from set_config import *
 from exports import bom_to_parts
 import os
 import openscad
-from tests import do_cmd, update_image, colour_scheme, background
+from tests import do_cmd, update_image, colour_scheme, background, image_size
 from deps import mtime
 from colorama import init
 import json
@@ -95,7 +95,7 @@ def render(target, type):
             render = "--preview" if type == 'stl' or colour != pp1 else "--render"
             tmp_name = tmp_dir + '/' + part[:-4] + '.png'
             dummy_deps_name = tmp_dir + '/tmp.deps' # work around for OpenSCAD issue #3879
-            openscad.run("-o", tmp_name, png_maker_name, colour_scheme, "--projection=p", "--imgsize=4096,4096", cam, render, "--autocenter", "--viewall", "-d", dummy_deps_name)
+            openscad.run("-o", tmp_name, png_maker_name, colour_scheme, "--projection=p", image_size, cam, render, "--autocenter", "--viewall", "-d", dummy_deps_name)
             do_cmd(("magick "+ tmp_name + " -trim -resize 280x280 -background %s -gravity Center -extent 280x280 -bordercolor %s -border 10 %s"
                     % (background, background, tmp_name)).split())
             update_image(tmp_name, png_name)

scripts/set_config.py

@@ -57,13 +57,13 @@ def set_config(target, usage = None):
         sys.exit(1)
 
     if not targets:
-        print("Not a muli-configuration project (no config_<target>.scad files found)")
+        print("Not a multi-configuration project (no config_<target>.scad files found)")
         if usage:
             usage()
         sys.exit(1)
 
     if not target in targets:
-        print(target + " is not a configuration, avaliable configurations are: " + valid_targets_string())
+        print(target + " is not a configuration, available configurations are: " + valid_targets_string())
         if usage:
             usage()
         sys.exit(1)

scripts/tests.py

@@ -36,8 +36,7 @@ from blurb import *
 from colorama import Fore
 from tmpdir import *
 
-w = 4096
-h = w
+image_size = "--imgsize=4096,4096"
 threshold = 20  # Image comparison allowed number of different pixels
 fuzz = 5       # Image comparison allowed percentage error in pixel value
 
@@ -119,7 +118,7 @@ def tests(tests):
         libtest = True
         lib_blurb = scrape_blurb(scad_name)
         if not os.path.isfile(png_name):
-            openscad.run(scad_name, "-o", png_name, colour_scheme, "--projection=p", "--imgsize=%d,%d" % (w, h), "--camera=0,0,0,50,0,340,500", "--autocenter", "--viewall");
+            openscad.run(scad_name, "-o", png_name, colour_scheme, "--projection=p", image_size, "--camera=0,0,0,50,0,340,500", "--autocenter", "--viewall");
             do_cmd(["magick", png_name, "-trim", "-resize", "1280", "-bordercolor", background, "-border", "10", png_name])
     else:
         #
@@ -240,7 +239,7 @@ def tests(tests):
                 print(changed)
                 t = time.time()
                 tmp_name = tmp_dir + '/tmp.png'
-                openscad.run_list([scad_name, "-o", tmp_name] + options.list() + ["-D$bom=2", colour_scheme, "--projection=p", "--imgsize=%d,%d" % (w, h), "--camera=0,0,0,70,0,315,500", "--autocenter", "--viewall", "-d", dname]);
+                openscad.run_list([scad_name, "-o", tmp_name] + options.list() + ["-D$bom=2", colour_scheme, "--projection=p", image_size, "--camera=0,0,0,70,0,315,500", "--autocenter", "--viewall", "-d", dname]);
                 times.add_time(scad_name, t)
                 do_cmd(["magick", tmp_name, "-trim", "-resize", "1000x600", "-bordercolor", background, "-border", "10", tmp_name])
                 update_image(tmp_name, png_name)

scripts/views.py

@@ -25,7 +25,7 @@
 from __future__ import print_function
 from set_config import *
 import openscad
-from tests import do_cmd, update_image, colour_scheme, background
+from tests import do_cmd, update_image, colour_scheme, background, image_size
 import time
 import times
 import options
@@ -223,7 +223,7 @@ def views(target, do_assemblies = None):
                                                 target_def = ['-D$target="%s"' % target] if target else []
                                                 cwd_def = ['-D$cwd="%s"' % os.getcwd().replace('\\', '/')]
                                                 view_def = ['--viewall', '--autocenter'] if not (zoomed & (1 << explode)) else ['--camera=0,0,0,55,0,25,140']
-                                                openscad.run_list(["-o", tmp_name, png_maker_name] + options.list() + target_def + cwd_def + view_def + ["-D$pose=1", "-D$explode=%d" % explode, colour_scheme, "--projection=p", "--imgsize=4096,4096", "-d", dname]);
+                                                openscad.run_list(["-o", tmp_name, png_maker_name] + options.list() + target_def + cwd_def + view_def + ["-D$pose=1", "-D$explode=%d" % explode, colour_scheme, "--projection=p", image_size, "-d", dname]);
                                                 times.add_time(png_name, t)
                                                 do_cmd(["magick", tmp_name, "-trim", "-resize", "1004x1004", "-bordercolor", background, "-border", "10", tmp_name])
                                                 update_image(tmp_name, png_name)

tests/PCB.scad

@@ -61,6 +61,7 @@ test_pcb = ["test_pcb", "Test PCB",
     [
         [ 20, -5,  180, "trimpot10"],
         [ 20, -15,  90, "trimpot10", true],
+        [  7,  2,   90, "smd_led", LED1206, "blue"],
         [ 10,  2,   90, "smd_led", LED0805, "red"],
         [ 13,  2,   90, "smd_led", LED0603, "orange"],
         [ 16,  2,   90, "smd_res", RES1206, "1K"],
@@ -85,16 +86,18 @@ test_pcb = ["test_pcb", "Test PCB",
         [  8, 105, 180, "usb_Ax2"],
         [  7,  85, 180, "molex_usb_Ax1"],
         [ 8.5,125, 180, "molex_usb_Ax2"],
-        [  3, 140, 180, "usb_uA"],
-        [  8, 155, 180, "usb_B"],
+        [  3, 138, 180, "usb_uA"],
+        [ 4.6,148, 180, "usb_miniA"],
+        [ 3.7,158, 180, "usb_C"],
+        [  8, 170, 180, "usb_B"],
+        [  6, 184, 180, "uSD", [12, 11.5, 1.4]],
+        [  8, 196, 180, "jack"],
+        [  6, 206, 180, "barrel_jack"],
+        [  5, 220, 180, "hdmi"],
+        [  3, 235, 180, "mini_hdmi"],
+        [ 38, 190, -90, "text", 25, 4, "Silkscreen", "Liberation Sans:style=Bold"],
         [ 25, 200,   0, "buzzer", 4.5, 8.5],
         [ 25, 218,   0, "buzzer"],
-        [ 38, 190, -90, "text", 25, 4, "Silkscreen", "Liberation Sans:style=Bold"],
-        [  8, 190, 180, "jack"],
-        [  6, 200, 180, "barrel_jack"],
-        [  5, 218, 180, "hdmi"],
-        [  3, 235, 180, "mini_hdmi"],
-        [  6, 175, 180, "uSD", [12, 11.5, 1.4]],
 
         [ 65,   9,   0, "link", inch(0.4)],
         [ 65,  12,   0, "ax_res", res1_8, 1000],
@@ -112,7 +115,6 @@ test_pcb = ["test_pcb", "Test PCB",
         [ 60,   3,   0, "flex"],
         [ 50,  15, -90, "flat_flex"],
         [ 40,  15, -90, "flat_flex", true],
-        [ 60,  35,   0, "D_plug", DCONN9],
 
         [ 50,  50,   0, "molex_hdr", 2],
         [ 50,  60,   0, "jst_xh", 2],
@@ -137,8 +139,11 @@ test_pcb = ["test_pcb", "Test PCB",
         [ 55, 170,   0, "button_4p5mm"],
         [ 50, 185,   0, "microswitch", small_microswitch],
         [ 52, 200,   0, "pcb", 11, TMC2130 ],
-        [ 80, 200,   0, "pdip", 24, "27C32", true, inch(0.6) ],
-        [ 80, 170,   0, "pdip", 8, "NE555" ],
+        [ 80, 210,   0, "pdip", 24, "27C32", true, inch(0.6) ],
+        [ 80, 180,   0, "pdip", 8, "NE555" ],
+        [ 80, 166, -90, "smd_soic", SOIC18, "PIC18F88"],
+        [ 71, 166, -90, "smd_soic", SOIC16, "ICL323"],
+        [ 64, 166, -90, "smd_soic", SOIC8, "M34063"],
         [ 80, 150,   0, "chip", 10, 5, 1, grey(20)],
 
         [ 52, 206,   0, "2p54socket", 8, 1 ],
@@ -146,7 +151,8 @@ test_pcb = ["test_pcb", "Test PCB",
         [ 50, 220,   0, "standoff",  5, 4.5, 12.5, 2.54],
         [ 50, 240,   0, "potentiometer"],
         [ 75, 240,   0, "potentiometer", KY_040_encoder, 8],
-        [ 30,  85,   -90, "7seg", WT5011BSR, 2],
+        [ 30,  85, -90, "7seg", WT5011BSR, 2],
+        [ 30, 55, -90, "D_plug", DCONN9],
     ],
     // accessories
     []

tests/SMDs.scad

@@ -38,6 +38,12 @@ module smds() {
         layout([for(s = smd_sots) smd_sot_size(s).x], 1)
             let(s = smd_sots[$i])
                 smd_sot(s, ["2N7000", "FZT851"][$i]);
+
+    translate([0, 20])
+        layout([for(s = smd_soics) smd_soic_size(s).x], 1)
+            let(s = smd_soics[$i])
+                smd_soic(s, s[0]);
+
 }
 
 if($preview)

tests/stepper_motors.scad

@@ -16,18 +16,28 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+show_connection_pos = false;
+
+/* [Hidden] */
 include <../core.scad>
 include <../vitamins/stepper_motors.scad>
 
 use <../utils/layout.scad>
 
+has_connector = [NEMA17_27, NEMA17_40, NEMA17_40L280, NEMA8_30, NEMA8_30BH];
+
 module stepper_motors()
     layout([for(s = stepper_motors) NEMA_width(s)], 5, no_offset = false) let(m = stepper_motors[$i]) {
-        rotate(180)
-            NEMA(m, 0, in([NEMA17_27, NEMA17_40, NEMA17_40L280, NEMA8_30, NEMA8_30BH], m));
+        rotate(180) {
+            NEMA(m, 0, in(has_connector, m) ? true : show_connection_pos ? undef : false);
 
-        translate_z(4)
-            NEMA_screws(m, M3_pan_screw, n = $i - 2, earth = $i > 6 ? undef : $i - 3);
+            if(show_connection_pos)
+                translate(NEMA_connection_pos(m, in(has_connector, m)))
+                    sphere();
+
+            translate_z(4)
+                NEMA_screws(m, M3_pan_screw, n = $i - 2, earth = $i > 6 ? undef : $i - 3);
+        }
     }
 
 if($preview)

utils/core/clip.scad

@@ -41,8 +41,8 @@ module box(xmin, ymin, zmin, xmax, ymax, zmax) //! Construct a box given its bou
          [0,2,3,1]]  // left
     );
 
-module clip(xmin = -inf, ymin = -inf, zmin = -inf, xmax = inf, ymax = inf, zmax = inf) //! Clip child to specified boundaries
-    render() intersection() {
+module clip(xmin = -inf, ymin = -inf, zmin = -inf, xmax = inf, ymax = inf, zmax = inf, convexity = 1) //! Clip child to specified boundaries
+    render(convexity = convexity) intersection() {
         children();
 
         box(xmin, ymin, zmin, xmax, ymax, zmax);

utils/rounded_polygon.scad

@@ -33,7 +33,7 @@ function circle_tangent(p1, p2) = //! Compute the clockwise tangent between two
         dx = p2.x - p1.x,
         dy = p2.y - p1.y,
         d = sqrt(dx * dx + dy * dy),
-        theta = atan2(dy, dx) + acos((r1 - r2) / d),
+        theta = assert(d, str("points conicident ", p1)) atan2(dy, dx) + acos((r1 - r2) / d),
         v = [cos(theta), sin(theta)]
     )[ p1 + r1 * v, p2 + r2 * v ];
 
@@ -72,24 +72,52 @@ function rounded_polygon_length(points, tangents) = //! Calculate the length giv
         arcs = rounded_polygon_arcs(points, tangents)
     ) sumv( map( concat(tangents, arcs), function(e) e[2] ) );
 
+function line_intersection(l0, l1) = //! Return the point where two 2D lines intersect or undef if they don't.
+    assert(Len(l0) == 2 && Len(l1) == 2, "Two 2D vectors expected")
+    let(
+        p0 = l0[0], p1 = l0[1], p2 = l1[0], p3 = l1[1],
+        v1 = p1 - p0,
+        v2 = p3 - p2,
+        v3 = p0 - p2,
+        det = v1.x * v2.y - v2.x * v1.y,
+        s = det ? (-v1.y * v3.x + v1.x * v3.y) / det : inf,
+        t = det ? ( v2.x * v3.y - v2.y * v3.x) / det : inf
+    ) s >= 0 && s <= 1 && t >= 0 && t <= 1 ? p0 + t * v1 : undef;
+
 function rounded_polygon(points, _tangents = undef) = //! Return the rounded polygon from the point list, can pass the tangent list to save it being calculated
     let(
         len = len(points),
         tangents = _tangents ? _tangents : rounded_polygon_tangents(points),
         arcs = rounded_polygon_arcs(points, tangents)
-    ) [for(i = [0 : len - 1], last = (i - 1 + len) % len, R = points[i][2]) each [
-        vec2(tangents[last][1]),                        // End of last tangent
-        if(R)                                               // If rounded
-            let(r = abs(R),                                     // Get radius
-                n = r2sides4n(r),                               // Decide number of vertices
-                step = 360 / n,                                 // Angular step
-                arc = arcs[i],                                  // Get corner arc details
-                start = ceil(arc[1] / step + eps),              // Starting index
-                end = floor((arc[0] + arc[1]) / step - eps),    // Ending index
-                c = vec2(points[i])                             // Centre of arc
-            ) for(j = R > 0 ? [end : -1 : start] : [start : 1 : end], a = j * step) c + r * [cos(a), sin(a)], // Points on the arc
-        vec2(tangents[i][0])]                           // Start of next tangent
+    ) [for(i = [0 : len - 1], last = (i - 1 + len) % len)
+        let(
+            t0 = vec2(tangents[last]),
+            t1 = vec2(tangents[i]),
+            p = line_intersection(t0, t1),                              // Do the tangents cross?
+            R = points[i][2]
+        )
+        if(!is_undef(p))                                                // Tangents intersect, so just add the intersection point
+            p
+        else
+            each [                                                      // Else link the two tangent ends with an arc
+                t0[1],                                                  // End of last tangent
+                if(R)                                                   // If rounded
+                    let(r = abs(R),                                     // Get radius
+                        n = r2sides4n(r),                               // Decide number of vertices
+                        step = 360 / n,                                 // Angular step
+                        arc = arcs[i],                                  // Get corner arc details
+                        start = ceil(arc[1] / step + eps),              // Starting index
+                        end = floor((arc[0] + arc[1]) / step - eps),    // Ending index
+                        c = vec2(points[i])                             // Centre of arc
+                    ) for(j = R > 0 ? [end : -1 : start] : [start : 1 : end], a = j * step)
+                        c + r * [cos(a), sin(a)],                       // Points on the arc
+                if(R)
+                    t1[0],                                              // Start of next tangent
+            ]
        ];
 
+function offset(points, offset) =                                       //! Offset a 2D polygon, breaks for concave shapes and negative offsets if the offset is more than half the smallest feature size.
+    rounded_polygon([for(p = points) [p.x, p.y, offset]]);
+
 module rounded_polygon(points, _tangents = undef) //! Draw the rounded polygon from the point list, can pass the tangent list to save it being calculated
     polygon(rounded_polygon(points, _tangents), convexity = len(points));

utils/sweep.scad

@@ -127,8 +127,8 @@ function sweep_transforms(path, loop = false, twist = 0) =
                          i = i + 1,
                          rot = i < len ? rotate_from_to(tangents[i - 1], tangents[i]) * rot : undef) rot],
 
-        missmatch = loop ? calculate_twist(rotations[0], rotations[last]) : 0,
-        rotation = missmatch + twist
+        mismatch = loop ? calculate_twist(rotations[0], rotations[last]) : 0,
+        rotation = mismatch + twist
     )
     [for(i = [0 : last])
         let(za = rotation * lengths[i] / length)

vitamins/extrusions.scad

@@ -20,7 +20,7 @@
 // Extrusion
 //
 //                  W   H     d1     d2  sq    cw   cwi   t    st   f    recess
-E1515  = [ "E1515", 15, 15,  -2.5,    0, 5.7,  3.4,  5.7, 1.1, 1.1, 0.5, false ];
+E1515  = [ "E1515", 15, 15,  -3.3,    0, 5.5,  6.2,  9.5, 1.0, 0.9, 0.5, false ];
 E2020  = [ "E2020", 20, 20,  -4.2,   -3,   8,    6, 12.0,   2,   2, 1,   false ];
 E2020t = [ "E2020t",20, 20,  -5.0,   -3, 7.8,  6.2, 11.0, 1.8, 1.5, 1.5, [7.2, 0.5] ];
 E2040  = [ "E2040", 20, 40,  -4.2,   -3,   8,    6, 12.0,   2,   2, 1,   false ];

vitamins/pcb.scad

@@ -485,6 +485,50 @@ module usb_uA(cutout = false) { //! Draw USB micro A connector
         }
 }
 
+module usb_miniA(cutout = false) { //! Draw USB mini A connector
+    l = 9.2;
+    iw1 = 7.0;
+    iw2 = 6.0;
+    ih1 = 1.05;
+    ih2 = 1.0;
+    h = 4.0;
+    t = 0.4;
+
+    module D() {
+        hull() {
+            translate([-iw1 / 2, h - t - ih1])
+                square([iw1, ih1]);
+
+            translate([-iw2 / 2, t + ih2])
+                square([iw2, eps]);
+
+        }
+        translate([-iw2 / 2, t])
+            square([iw2, ih2]);
+    }
+
+    if(cutout)
+        rotate([90, 0, 90])
+            linear_extrude(100)
+                offset(2 * panel_clearance)
+                    D();
+    else
+        color("silver") rotate([90, 0, 90]) {
+            linear_extrude(l, center = true)
+                difference() {
+                    offset(t)
+                        D();
+
+                    D();
+                }
+
+            translate_z(-l / 2)
+                linear_extrude(1)
+                    offset(t)
+                        D();
+        }
+}
+
 module usb_C(cutout = false) { //! Draw USB C connector
     l = 7.35;
     w = 8.94;
@@ -1046,6 +1090,7 @@ module pcb_component(comp, cutouts = false, angle = undef) { //! Draw pcb compon
         if(show(comp, "usb_A"))         usb_Ax1(cutouts);
         if(show(comp, "usb_Ax2"))       usb_Ax2(cutouts);
         if(show(comp, "usb_uA"))        usb_uA(cutouts);
+        if(show(comp, "usb_miniA"))     usb_miniA(cutouts);
         if(show(comp, "usb_B"))         usb_B(cutouts);
         if(show(comp, "usb_C"))         usb_C(cutouts);
         if(show(comp, "jack"))          jack(cutouts);
@@ -1089,6 +1134,7 @@ module pcb_component(comp, cutouts = false, angle = undef) { //! Draw pcb compon
             if(show(comp, "smd_res"))       smd_resistor(comp[4], comp[5]);
             if(show(comp, "smd_cap"))       smd_capacitor(comp[4], comp[5], param(6, undef));
             if(show(comp, "smd_sot"))       smd_sot(comp[4], comp[5]);
+            if(show(comp, "smd_soic"))      smd_soic(comp[4], comp[5]);
             if(show(comp, "vero_pin"))      vero_pin(param(4, false));
             if(show(comp, "terminal"))      terminal_block(comp[5], comp[4]);
             if(show(comp, "text"))          color("white") linear_extrude(eps) resize([comp[4], comp[5]]) text(comp[6], font = param(7, "Liberation Mono"), valign = "center", halign = "center");

vitamins/pcbs.scad

@@ -885,7 +885,7 @@ ArduinoNano = let(l = 43.18, w = 17.78, pitch = inch(0.6), pins = 15, poffset =
       [l / 2 + poffset, w / 2 - pitch / 2,  0, "-2p54joiner", pins, 1],
       [l / 2 + poffset, w / 2 + pitch / 2,  0, "-2p54joiner", pins, 1],
       [l / 2 + poffset + inch(0.75), w / 2, 0, "2p54header",  2,    3, false, undef, false, false],
-      [1.75, w / 2, 180, "usb_uA" ],
+      [3.1, w / 2, 180, "usb_miniA" ],
       [l / 2 - inch(0.25), w / 2, 45, "chip", 7, 7, 1.3],
       [l / 2 + poffset + inch(0.15), w / 2,    0, "chip", 3.5, 6,   1.8, silver ], // mock button
       [l / 2 + poffset + inch(0.15), w / 2,    0, "chip", 1.3, 2.6, 2.6, grey(90) ], // mock button

vitamins/smd.scad

@@ -178,3 +178,53 @@ module smd_sot(type, value) { //! Draw an SMD transistor
                     text(value, halign = "center", valign = "center");
 
 }
+
+function smd_soic_size(type)       = type[1];    //! Body length, width and height
+function smd_soic_z(type)          = type[2];    //! Height above PCB surface
+function smd_soic_lead_z(type)     = type[3];    //! Top of lead frame from top
+function smd_soic_lead_pitch(type) = type[4];    //! Lead pitch
+function smd_soic_lead_span(type)  = type[5];    //! Total span of leads
+function smd_soic_lead_size(type)  = type[6];    //! Lead width, foot depth, lead thickness
+
+module smd_soic(type, value) { //! Draw an SMD SOIC
+    vitamin(str("smd_soic(", type[0], "): ", type[0], " package ", value));
+
+    size = smd_soic_size(type);
+    z0 = smd_soic_z(type);
+    z2 = z0 + size.z;
+    z1 = z2 - smd_soic_lead_z(type);
+    slant = 5;                              //! 5 degree body draft angle
+    pitch = smd_soic_lead_pitch(type);
+    span = (smd_soic_lead_span(type) / 2);
+    leads = floor(size.x / pitch) + 1;
+    ls = smd_soic_lead_size(type);
+
+    r = ls.z;
+    gullwing = rounded_path([[0, 0, ls.z / 2], [0, ls.y - ls.z, ls.z / 2], r, [0, ls.y -ls.z + z1 - ls.z, z1 - ls.z / 2], r, [0, span / 2, z1 - ls.z / 2]], $fn = 32);
+
+    color(grey(20))
+        hull()
+            for(z = [z0, z1, z2], inset = abs(z - z1) * tan(slant))
+                translate_z(z)
+                    cube([size.x - 2 * inset, size.y - 2 * inset, eps], center = true);
+
+    color(silver) {
+        for(i = [0 : leads - 1]) {
+            translate([i * pitch - size.x / 2 + (size.x - (leads - 1) * pitch) / 2, -span])
+                sweep(gullwing, rectangle_points(ls.x, ls.z));
+
+        rotate(180)
+            translate([0, -span / 2])
+                translate([i * pitch - size.x / 2 + (size.x - (leads - 1) * pitch) / 2, -span / 2])
+                    sweep(gullwing, rectangle_points(ls.x, ls.z));
+        }
+
+    }
+
+    color("white")
+        translate_z(z0 + size.z)
+            linear_extrude(eps)
+                resize([size.x * 0.9, size.y / 2])
+                    text(value, halign = "center", valign = "center");
+
+}

vitamins/smds.scad

@@ -23,8 +23,9 @@
 
 LED0603 = ["LED0603", [1.6, 0.8,  0.18], [1.0, 0.8,  0.42]];
 LED0805 = ["LED0805", [2.0, 1.25, 0.46], [1.4, 1.25, 0.54]];
+LED1206 = ["LED1206", [3.2, 1.6, 0.5], [2.0, 1.6, .6]];
 
-smd_leds = [LED0603, LED0805];
+smd_leds = [LED0603, LED0805, LED1206];
 
 RES0603 = ["RES0603", [1.6, 0.8, 0.45], 0.3, 1/10];
 RES0805 = ["RES0805", [2.0, 1.2, 0.45], 0.4, 1/8];
@@ -43,4 +44,10 @@ SOT223 = ["SOT223", [6.5, 3.5, 1.6], 0.05, 0.89, 2.3, 7.0, [0.7, 0.95, 0.25], 3]
 
 smd_sots = [SOT23, SOT223];
 
+SOIC8  = ["SOIC8",  [4.90, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00, [0.31, .50, 0.20]];
+SOIC16 = ["SOIC16", [9.90, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00, [0.31, .50, 0.20]];
+SOIC18 = ["SOIC18", [11.40, 7.50, 2.00], 0.10, 1.20, 1.27, 10.30, [0.31, .50, 0.20]];
+
+smd_soics = [SOIC8, SOIC16, SOIC18];
+
 use <smd.scad>

vitamins/stepper_motor.scad

@@ -51,6 +51,18 @@ stepper_body_colour = grey(20);
 stepper_cap_colour  = grey(50);
 stepper_machined_colour = grey(90);
 
+function NEMA_connection_pos(type, jst_connector = false) = let( //! Position of the wires or the connector
+        side = NEMA_width(type),
+        length = NEMA_length(type),
+        cap = NEMA_cap_heights(type)[1],
+        hdr = NEMA_end_connector(type) ? jst_zh_header : jst_ph_header,
+        socket_size = hdr_box_size(hdr),
+        end_conn_inset = socket_size.y - 2
+    )
+    jst_connector ? NEMA_end_connector(type) ? [0, side / 2 + hdr_y_offset(hdr) + socket_size.y / 2 - end_conn_inset, -length]
+                                             : [0, side / 2 + socket_size.z,  hdr_y_offset(hdr) - socket_size.y / 2 - length + cap]
+                  : [0, side / 2, -length + cap / 2];
+
 module NEMA_outline(type) //! 2D outline
     intersection() {
         side = NEMA_width(type);
@@ -185,14 +197,14 @@ module NEMA(type, shaft_angle = 0, jst_connector = false) { //! Draw specified N
                 not_on_bom()
                     leadscrew(shaft_rad * 2, shaft.x + length + shaft2, shaft.y, shaft.z, center = false);
 
-    if(!jst_connector)
+    if(jst_connector == false)
         translate([0, side / 2, -length + cap / 2])
             rotate([90, 0, 0])
                 for(i = [0 : 3])
                     rotate(225 + i * 90)
-                        color(["red", "blue","green","black"][i])
-                            translate([1, 0, 0])
-                                cylinder(r = 1.5 / 2, h = 12, center = true);
+                        color(["red", "green", "black", "blue"][i])
+                            translate([1.48 / sqrt(2), 0, 0])
+                                cylinder(d = 1.48, h = 12, center = true);
 }
 
 module NEMA_screw_positions(type, n = 4) { //! Positions children at the screw holes

vitamins/veroboard.scad

@@ -41,7 +41,7 @@ function vero_track_width(type)    = vero_pitch(type) * 0.8; //! The width of th
 function vero_length(type) = vero_holes(type) * vero_pitch(type); //! Length of the board
 function vero_width(type) = vero_strips(type) * vero_pitch(type); //! Width of the board
 
-function vero(name, assembly, holes, strips, pitch = inch(0.1), fr4 = false, screw = M3_cap_screw, mounting_holes = [], breaks = [], no_tracks = [], components = [], joints = []) = //! Constructor
+function vero(name, assembly, holes, strips, pitch = 2.54, fr4 = false, screw = M3_cap_screw, mounting_holes = [], breaks = [], no_tracks = [], components = [], joints = []) = //! Constructor
     [ name, assembly, holes, strips, pitch, fr4, screw, mounting_holes, breaks, no_tracks, components, joints ];
 
 function vero_size(type) = [vero_length(type), vero_width(type), vero_thickness(type)]; //! Board size
@@ -89,7 +89,7 @@ module veroboard(type) { //! Draw specified veroboard with missing tracks and tr
     tc = vero_fr4(type) ? "silver" : copper;
     no_track = vero_no_track(type);
 
-    vitamin(str("veroboard(", type[0], "): Veroboard ", holes, " holes x ", strips, "strips"));
+    vitamin(str("veroboard(", type[0], "): Veroboard ", holes, " holes x ", strips, " strips"));
 
     color(colour) linear_extrude(vero_thickness(type))
         difference() {