Can now specify a rotation angle for a geared_stepper's shaft.

CHANGELOG.md

@@ -3,6 +3,40 @@
 This changelog is generated by `changelog.py` using manually added semantic version tags to classify commits as breaking changes, additions or fixes.
 
 
+#### [v21.23.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.23.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.23.1...v21.23.2 "diff with v21.23.1")
+*   2024-06-12 [`b00709d`](https://github.com/nophead/NopSCADlib/commit/b00709da820e1241422b6e156b0c61157c18d63d "show commit") [C.P.](# "Chris Palmer") Image edge pixel changes due to new PC.
+
+*   2024-06-12 [`c76be23`](https://github.com/nophead/NopSCADlib/commit/c76be2386715b80bbbc9a71c99214df7f3c71bc7 "show commit") [C.P.](# "Chris Palmer") Fixed thread bug on threaded inserts revealed by latest OpenSCAD snapshot.
+
+*   2024-06-12 [`f6f348b`](https://github.com/nophead/NopSCADlib/commit/f6f348b76e7986927a571e1c07c3f866bcbeeafe "show commit") [C.P.](# "Chris Palmer") Fixed rocker slot height.
+
+#### [v21.23.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.23.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.23.0...v21.23.1 "diff with v21.23.0")
+*   2024-05-08 [`870b396`](https://github.com/nophead/NopSCADlib/commit/870b396574935603305462f1fea88564c909aad8 "show commit") [C.](# "Chris") Revoved strailing comma in `let()` in `splines.scad`.
+
+### [v21.23.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.23.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.22.0...v21.23.0 "diff with v21.22.0")
+*   2024-04-21 [`c1fdb2e`](https://github.com/nophead/NopSCADlib/commit/c1fdb2e701672b2404e34f224e77f21fb2ff34da "show commit") [C.P.](# "Chris Palmer") Dpdated images and readme.
+
+*   2024-04-20 [`cbe2c08`](https://github.com/nophead/NopSCADlib/commit/cbe2c085b72d0e5d9f0c6485d5fa7df0e172a4cc "show commit") [V.](# "V.Shcriabets") Add  RCWL-0516 PCB
+
+### [v21.22.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.22.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.21.0...v21.22.0 "diff with v21.21.0")
+*   2024-04-21 [`dbf930f`](https://github.com/nophead/NopSCADlib/commit/dbf930fd366c28aa9e581d9fe01e3654b882923a "show commit") [C.P.](# "Chris Palmer") Added cubic splines and Catmull Rom splines.
+
+### [v21.21.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.21.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.20.0...v21.21.0 "diff with v21.20.0")
+*   2024-04-21 [`97cea65`](https://github.com/nophead/NopSCADlib/commit/97cea65f41714acd31a3a3b968d8c133ce1a91d2 "show commit") [C.P.](# "Chris Palmer") Cable clips can now use inserts or nut traps.
+
+### [v21.20.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.20.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.19.2...v21.20.0 "diff with v21.19.2")
+*   2024-04-21 [`c7e912c`](https://github.com/nophead/NopSCADlib/commit/c7e912cd77e189ef729f94956245f1c6a9f72012 "show commit") [C.P.](# "Chris Palmer") A optional path can now be specified for tubing.
+
+#### [v21.19.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.19.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.19.1...v21.19.2 "diff with v21.19.1")
+*   2024-04-21 [`f563645`](https://github.com/nophead/NopSCADlib/commit/f563645e45817a4f89ef3cb1be9d932310c485c6 "show commit") [C.P.](# "Chris Palmer") Corrected M2 `nut_trap_depth,` was too big.
+
+#### [v21.19.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.19.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.19.0...v21.19.1 "diff with v21.19.0")
+*   2024-04-21 [`2840cc2`](https://github.com/nophead/NopSCADlib/commit/2840cc2390a8e776add8ca3ef715abfc8d15dadc "show commit") [C.P.](# "Chris Palmer") Washer now uses `sweep.scad` instead of including it, leaking its interface.
+
+### [v21.19.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.19.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.18.0...v21.19.0 "diff with v21.18.0")
+*   2024-04-21 [`a5b2018`](https://github.com/nophead/NopSCADlib/commit/a5b20180083ba8d3014bc298cf0e28c20e6be437 "show commit") [C.P.](# "Chris Palmer") Added `offset_paths()` to `sweep.scad`.
+`show_path()` now takes an optional radius.
+
 ### [v21.18.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.18.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.17.0...v21.18.0 "diff with v21.17.0")
 *   2024-03-14 [`19dadcb`](https://github.com/nophead/NopSCADlib/commit/19dadcb58db0dd7408726c69d46cf2b7b26c764b "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
 

lib.scad

@@ -97,6 +97,7 @@ use <utils/hanging_hole.scad>
 use <utils/fillet.scad>
 use <utils/rounded_polygon.scad>
 use <utils/rounded_triangle.scad>
+use <utils/splines.scad>
 use <utils/layout.scad>
 use <utils/round.scad>
 use <utils/offset.scad>

readme.md

@@ -40,10 +40,10 @@ A list of changes classified as breaking, additions or fixes is maintained in [C
 <tr><td> <a href = "#dip">DIP</a> </td><td> <a href = "#opengrab">Opengrab</a> </td><td> <a href = "#springs">Springs</a> </td><td> <a href = "#led_bezel">LED_bezel</a> </td><td> <a href = "#rounded_polygon">Rounded_polygon</a> </td><td></td></tr>
 <tr><td> <a href = "#d_connectors">D_connectors</a> </td><td> <a href = "#pcb">PCB</a> </td><td> <a href = "#stepper_motors">Stepper_motors</a> </td><td> <a href = "#pcb_mount">PCB_mount</a> </td><td> <a href = "#rounded_triangle">Rounded_triangle</a> </td><td></td></tr>
 <tr><td> <a href = "#displays">Displays</a> </td><td> <a href = "#pcbs">PCBs</a> </td><td> <a href = "#swiss_clips">Swiss_clips</a> </td><td> <a href = "#psu_shroud">PSU_shroud</a> </td><td> <a href = "#sector">Sector</a> </td><td></td></tr>
-<tr><td> <a href = "#extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#psus">PSUs</a> </td><td> <a href = "#terminals">Terminals</a> </td><td> <a href = "#pocket_handle">Pocket_handle</a> </td><td> <a href = "#sweep">Sweep</a> </td><td></td></tr>
-<tr><td> <a href = "#extrusions">Extrusions</a> </td><td> <a href = "#panel_meters">Panel_meters</a> </td><td> <a href = "#toggles">Toggles</a> </td><td> <a href = "#press_fit">Press_fit</a> </td><td> <a href = "#thread">Thread</a> </td><td></td></tr>
-<tr><td> <a href = "#fans">Fans</a> </td><td> <a href = "#photo_interrupters">Photo_interrupters</a> </td><td> <a href = "#transformers">Transformers</a> </td><td> <a href = "#printed_box">Printed_box</a> </td><td> <a href = "#tube">Tube</a> </td><td></td></tr>
-<tr><td> <a href = "#fastons">Fastons</a> </td><td> <a href = "#pillars">Pillars</a> </td><td> <a href = "#ttracks">Ttracks</a> </td><td> <a href = "#printed_pulleys">Printed_pulleys</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#psus">PSUs</a> </td><td> <a href = "#terminals">Terminals</a> </td><td> <a href = "#pocket_handle">Pocket_handle</a> </td><td> <a href = "#splines">Splines</a> </td><td></td></tr>
+<tr><td> <a href = "#extrusions">Extrusions</a> </td><td> <a href = "#panel_meters">Panel_meters</a> </td><td> <a href = "#toggles">Toggles</a> </td><td> <a href = "#press_fit">Press_fit</a> </td><td> <a href = "#sweep">Sweep</a> </td><td></td></tr>
+<tr><td> <a href = "#fans">Fans</a> </td><td> <a href = "#photo_interrupters">Photo_interrupters</a> </td><td> <a href = "#transformers">Transformers</a> </td><td> <a href = "#printed_box">Printed_box</a> </td><td> <a href = "#thread">Thread</a> </td><td></td></tr>
+<tr><td> <a href = "#fastons">Fastons</a> </td><td> <a href = "#pillars">Pillars</a> </td><td> <a href = "#ttracks">Ttracks</a> </td><td> <a href = "#printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#tube">Tube</a> </td><td></td></tr>
 <tr><td> <a href = "#fuseholder">Fuseholder</a> </td><td> <a href = "#pillow_blocks">Pillow_blocks</a> </td><td> <a href = "#tubings">Tubings</a> </td><td> <a href = "#ribbon_clamp">Ribbon_clamp</a> </td><td></td><td></td></tr>
 <tr><td> <a href = "#gear_motors">Gear_motors</a> </td><td> <a href = "#pin_headers">Pin_headers</a> </td><td> <a href = "#variacs">Variacs</a> </td><td> <a href = "#ssr_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
 <tr><td> <a href = "#geared_steppers">Geared_steppers</a> </td><td> <a href = "#potentiometers">Potentiometers</a> </td><td> <a href = "#veroboard">Veroboard</a> </td><td> <a href = "#screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
@@ -1459,7 +1459,7 @@ Geared tin can steppers
 ### Modules
 | Module | Description |
 |:--- |:--- |
-| `geared_stepper(type)` | Draw the specified geared stepper |
+| `geared_stepper(type, angle = 0)` | Draw the specified geared stepper with optional shaft angle. |
 | `geared_stepper_screw_positions(type)` | Place children at the screw positions |
 
 ![geared_steppers](tests/png/geared_steppers.png)
@@ -2884,6 +2884,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | `pcb(Melzi)` |  Melzi electronics - not shown |
 |   6 |  |  Micro SD card |
 |   1 |  |  Micro SD card - not shown |
+|   1 | `pcb(RCWL-0516)` |  Microwave Radar Sensor |
 |   1 | `molex_254(2)` |  Molex KK header 2 way - not shown |
 |   1 | `molex_254(3)` |  Molex KK header 3 way - not shown |
 |  20 | `nut(M2_nut, nyloc = true)` |  Nut M2 x 1.6mm nyloc |
@@ -2911,8 +2912,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   8 | `screw(M2_cap_screw, 20)` |  Screw M2 cap x 20mm |
 |   4 | `screw(M2_cap_screw, 25)` |  Screw M2 cap x 25mm |
 |   2 | `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 |
+|   8 | `screw(M2p5_cap_screw, 30)` |  Screw M2.5 cap x 30mm |
 |  12 | `screw(M2p5_cap_screw, 35)` |  Screw M2.5 cap x 35mm |
 |   4 | `screw(M2p5_dome_screw, 25)` |  Screw M2.5 dome x 25mm |
 |   4 | `screw(M2p5_pan_screw, 20)` |  Screw M2.5 pan x 20mm |
@@ -2920,8 +2920,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |  19 | `screw(M3_cap_screw, 16)` |  Screw M3 cap x 16mm |
 |  13 | `screw(M3_cap_screw, 20)` |  Screw M3 cap x 20mm |
 |   4 | `screw(M3_cap_screw, 25)` |  Screw M3 cap x 25mm |
-|   8 | `screw(M3_cap_screw, 30)` |  Screw M3 cap x 30mm |
-|   3 | `screw(M3_cap_screw, 35)` |  Screw M3 cap x 35mm |
+|  11 | `screw(M3_cap_screw, 35)` |  Screw M3 cap x 35mm |
 |   4 | `screw(M4_cap_screw, 20)` |  Screw M4 cap x 20mm |
 |   4 | `screw(M4_cap_screw, 25)` |  Screw M4 cap x 25mm |
 |   1 | `pcb(XIAO)` |  Seeeduino XIAO |
@@ -2941,24 +2940,24 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 | Qty | Filename |
 | ---:|:--- |
 |   4 | pcb_spacer20100.stl |
-|   4 | pcb_spacer20140.stl |
+|   4 | pcb_spacer20150.stl |
 |   4 | pcb_spacer2070.stl |
 |   4 | pcb_spacer2080.stl |
 |   4 | pcb_spacer2090.stl |
-|   2 | pcb_spacer25100.stl |
-|   4 | pcb_spacer25130.stl |
-|   4 | pcb_spacer25160.stl |
+|   2 | pcb_spacer25110.stl |
+|   4 | pcb_spacer25140.stl |
 |   4 | pcb_spacer25170.stl |
-|   4 | pcb_spacer25180_2.stl |
+|   4 | pcb_spacer25180.stl |
 |   4 | pcb_spacer25190_2.stl |
-|   4 | pcb_spacer25230.stl |
+|   4 | pcb_spacer25200_2.stl |
 |   4 | pcb_spacer25240.stl |
 |   4 | pcb_spacer25250.stl |
+|   4 | pcb_spacer25260.stl |
 |   4 | pcb_spacer2580.stl |
-|   4 | pcb_spacer30120.stl |
-|   4 | pcb_spacer30200.stl |
+|   4 | pcb_spacer30130.stl |
 |   4 | pcb_spacer30210.stl |
-|   3 | pcb_spacer30220.stl |
+|   4 | pcb_spacer30220.stl |
+|   3 | pcb_spacer30230.stl |
 |  10 | pcb_spacer3050.stl |
 |   9 | pcb_spacer3060.stl |
 |   9 | pcb_spacer3070.stl |
@@ -7420,6 +7419,32 @@ A sector of a circle between two angles.
 ![sector](tests/png/sector.png)
 
 
+<a href="#top">Top</a>
+
+---
+<a name="splines"></a>
+## Splines
+Cubic splines that interpolate between a list of 2D points passing through all of them.
+Translated from the Python version at <https://community.alteryx.com/t5/Engine-Works/Creating-a-Cubic-Spline-in-Python-and-Alteryx/ba-p/581173>.
+Note the x values of the points must be strictly increasing.
+
+Catmull-Rom splines are well behaved but the ends points are control points and the curve only goes from the second point to the penultimate point.
+Coded from <https://en.wikipedia.org/wiki/Centripetal_Catmull%E2%80%93Rom_spline#Code_example_in_Python>.
+No restrictions on points and they can be 3D.
+
+[utils/splines.scad](utils/splines.scad) Implementation.
+
+[tests/splines.scad](tests/splines.scad) Code for this example.
+
+### Functions
+| Function | Description |
+|:--- |:--- |
+| `catmull_rom_spline(points, n, alpha = 0.5)` | Interpolate n new points between the specified points with a Catmull-Rom spline, alpha = 0.5 for centripetal, 0 for uniform and 1 for chordal. |
+| `cubic_spline(points, N = 100)` | Interpolate the list of points given to produce N points on a cubic spline that passes through points given. |
+
+![splines](tests/png/splines.png)
+
+
 <a href="#top">Top</a>
 
 ---

tests/splines.scad

@@ -0,0 +1,38 @@
+//
+// NopSCADlib Copyright Chris Palmer 2024
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+include <../utils/core/core.scad>
+
+use <../utils/splines.scad>
+use <../utils/sweep.scad>
+
+points = [[0, 1.5], [2, 2], [3, 1], [4, -2], [5, 1], [6, 2], [7, 3]];
+
+module splines() {
+    cm_spline = catmull_rom_spline(points, 100 / len(points), 0.5);
+    color("green") show_path(cm_spline, 0.01);
+
+    cu_spline = cubic_spline(points, 100);
+    color("blue") show_path(cu_spline, 0.01);
+
+    for(p = points)
+        translate(p) color("red")
+            cylinder($fn = 64, r = 0.03, h = 0.02, center = true);
+}
+
+rotate([70, 0, 315]) splines();

utils/splines.scad

@@ -0,0 +1,101 @@
+//
+// NopSCADlib Copyright Chris Palmer 2024
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+
+//
+//! Cubic splines that interpolate between a list of 2D points passing through all of them.
+//! Translated from the Python version at <https://community.alteryx.com/t5/Engine-Works/Creating-a-Cubic-Spline-in-Python-and-Alteryx/ba-p/581173>.
+//! Note the x values of the points must be strictly increasing.
+//!
+//! Catmull-Rom splines are well behaved but the ends points are control points and the curve only goes from the second point to the penultimate point.
+//! Coded from <https://en.wikipedia.org/wiki/Centripetal_Catmull%E2%80%93Rom_spline#Code_example_in_Python>.
+//! No restrictions on points and they can be 3D.
+//
+include <../utils/core/core.scad>
+
+use <maths.scad>
+use <sweep.scad>
+
+function cubic_spline(points, N = 100) = let( //! Interpolate the list of points given to produce N points on a cubic spline that passes through points given.
+        N = N - 1,
+        n = len(points),
+        ass1 = assert(n >= 3, "must be at least 3 points")0,
+
+        dx = [for(i = [0 : n - 2]) points[i + 1].x - points[i].x], // x deltas
+        ass2 = assert(min(dx) > 0, "X must strictly increase")0,
+
+        //
+        // A and C are diagonals above and below the main diagonal B, which is all 2's
+        //
+        A = [for(i = [0 : n - 3]) dx[i] / (dx[i] + dx[i + 1]), 0],
+        C = [0, for(i = [0 : n - 3]) dx[i + 1] / (dx[i] + dx[i + 1]), 0],
+        //
+        // D are the target values on the right hand side of the equation
+        //
+        D = [0, for(i = [1 : n - 2]) 6 * ((points[i + 1].y - points[i].y) / dx[i] - (points[i].y - points[i - 1].y) / dx[i - 1]) / (dx[i] + dx[i - 1]), 0],
+        //
+        // Solve the tridiagonal equation using the Thomas algorithm
+        //
+        c = [for(i = 1, c = 0; i < n; c = C[i] / (2 - c * A[i - 1]), i = i + 1) c, 0],
+        d = [for(i = 1, d = 0; i < n; d = (D[i] - d * A[i - 1]) / (2 - c[i - 1] * A[i - 1]), i = i + 1) d, 0],
+        M = [for(i = n - 2, x = 0; i >= 0; x = d[i] - c[i] * x, i = i - 1) x, 0],
+        //
+        // Calculate the coefficients of each cubic curve
+        //
+        coefficients = [for(i = [0 : n - 2], dx2 = sqr(dx[i]), j = n - 1 - i)
+                            [(M[j - 1] - M[j]) * dx2 / 6,
+                             M[j] * dx2 / 2,
+                             points[i + 1].y - points[i].y - (M[j - 1] + 2 * M[j]) * dx2 / 6,
+                             points[i].y]
+                       ],
+        //
+        // Use the coefficients to interpolate between the points
+        //
+        x0 = points[0].x,
+        x1 = points[n - 1].x,
+        spline = [for(i = 0, j = 0, z = 0, x = x0; i <= N + 1;
+                      x = x0 + (x1 - x0) * i / N,
+                      j = i < N - 1 && x > points[j + 1].x ? j + 1 : j,
+                      z = (x - points[j].x) / dx[j],
+                      i = i + 1,
+                      C = coefficients[j]
+                     ) if(i) [x, (((C[0] * z) + C[1]) * z + C[2]) * z + C[3]]
+                 ]
+    ) spline;
+
+function tj(ti, pi, pj, alpha = 0.5) = ti + pow(norm(pi - pj), alpha);
+
+function catmull_rom_segment(P0, P1, P2, P3, n, alpha = 0.5, last = false) = let(
+        t0 = 0,
+        t1 = tj(t0, P0, P1, alpha),
+        t2 = tj(t1, P1, P2, alpha),
+        t3 = tj(t2, P2, P3, alpha),
+        end = last ? n : n - 1,
+        points  = [for(i = [0 : end], t = t1 + (t2 - t1) * i / n) let(
+            A1 = (t1 - t) / (t1 - t0) * P0 + (t - t0) / (t1 - t0) * P1,
+            A2 = (t2 - t) / (t2 - t1) * P1 + (t - t1) / (t2 - t1) * P2,
+            A3 = (t3 - t) / (t3 - t2) * P2 + (t - t2) / (t3 - t2) * P3,
+            B1 = (t2 - t) / (t2 - t0) * A1 + (t - t0) / (t2 - t0) * A2,
+            B2 = (t3 - t) / (t3 - t1) * A2 + (t - t1) / (t3 - t1) * A3
+        ) (t2 - t) / (t2 - t1) * B1 + (t - t1) / (t2 - t1) * B2]
+    ) points;
+
+
+function catmull_rom_spline(points, n, alpha = 0.5) = let( //! Interpolate n new points between the specified points with a Catmull-Rom spline, alpha = 0.5 for centripetal, 0 for uniform and 1 for chordal.
+        segs = len(points) - 3
+    ) [for(i = [0 : segs - 1]) each catmull_rom_segment(points[i], points[i + 1], points[i + 2], points[i + 3], n, alpha, last = i == segs - 1)];

utils/thread.scad

@@ -47,7 +47,7 @@ thread_colour_factor = 0.8; // 60 degree threads appear too bright due to the an
 
 function thread_profile(h, crest, angle, overlap = 0.1) = //! Create thread profile path
     let(base = crest + 2 * (h + overlap) * tan(angle / 2))
-        [[-base / 2, -overlap, 0], [-crest / 2, h, 0], [crest / 2, h, 0], [base / 2, -overlap, 0]];
+        [[-base / 2, -overlap, 0], [-crest / 2, h, 0], if(crest) [crest / 2, h, 0], [base / 2, -overlap, 0]];
 
 module thread(dia, pitch, length, profile, center = true, top = -1, bot = -1, starts = 1, solid = true, female = false, colour = undef) { //! Create male or female thread, ends can be tapered, chamfered or square
     assert(is_undef(colour) || is_list(colour), "Thread colour must be in [r, g, b] form");

vitamins/geared_stepper.scad

@@ -52,7 +52,7 @@ module geared_stepper_screw_positions(type) //! Place children at the screw posi
 motor_colour = "#9BA2AC";
 gearbox_colour = "#FFF7EE";
 
-module geared_stepper(type) { //! Draw the specified geared stepper
+module geared_stepper(type, angle = 0) { //! Draw the specified geared stepper with optional shaft angle.
     vitamin(str("geared_stepper(", type[0], "): Geared stepper - ", type[1]));
 
     radius = gs_diameter(type) / 2;
@@ -125,19 +125,20 @@ module geared_stepper(type) { //! Draw the specified geared stepper
     f = gs_shaft_flat(type);
     two_flats = f < 0;
     vflip()
-        color(two_flats ? brass : gearbox_colour) {
-            d = gs_shaft_d(type);
-            h = gs_shaft_length(type);
-            linear_extrude(h)
-                intersection() {
-                    circle(d = d);
+        rotate(angle)
+            color(two_flats ? brass : gearbox_colour) {
+                d = gs_shaft_d(type);
+                h = gs_shaft_length(type);
+                linear_extrude(h)
+                    intersection() {
+                        circle(d = d);
 
-                    translate([0, two_flats ? 0 : (f - d) / 2])
-                        square([d + 1, abs(f)], center = true);
-                }
+                        translate([0, two_flats ? 0 : (f - d) / 2])
+                            square([d + 1, abs(f)], center = true);
+                    }
 
-            cylinder(d = d, h = h - gs_flat_length(type));
-        }
+                cylinder(d = d, h = h - gs_flat_length(type));
+            }
 
     // Wire block
     color(bulge_z ? "white" : "skyblue") {

vitamins/insert.scad

@@ -212,13 +212,10 @@ module threaded_insert(type) { //! Draw specified threaded insert, for use in wo
 
     thread_l = insert_length(type) - z; // - insert_ring1_h(type);
 
-
-
-
     vitamin(str("threaded_insert(", type[0], "): Threaded insert M", insert_screw_diameter(type), " x ", length, "mm"));
     union() {
         color(silver)
-            difference() {
+            render() difference() {
                 base_insert(type);
                 translate_z(-socket/2 + 0.01)
                     cylinder(r=socket, $fn = 6, h=socket/2);
@@ -245,5 +242,4 @@ module threaded_insert(type) { //! Draw specified threaded insert, for use in wo
                 female = false,
                 colour = silver);
     }
-
 }

vitamins/pcbs.scad

@@ -760,7 +760,7 @@ ZC_A0591 = ["ZC_A0591", "ZC-A0591 ULN2003 driver PCB", 35, 32, 1.6, 0, 2.5, 0, "
     ], [], [], [], M2p5_pan_screw];
 
 
-MT3608 = ["MT3608", "MT3608 boost converter module",        37, 17, 1.2, 2, 1.5, [5, 3], "#2140BE", false, 
+MT3608 = ["MT3608", "MT3608 boost converter module",        37, 17, 1.2, 2, 1.5, [5, 3], "#2140BE", false,
       [[3.0725, 5.095], [3.0725, -5.095], [-3.0725, 5.095], [-3.0725, -5.095]],
       [[-12.05 , -6.8, 180, "trimpot10"],
        [-24.05 , 13.8, 90, "smd_soic", SOT23_6, "B628"],
@@ -1202,6 +1202,28 @@ ESP_12F = pcb("ESP_12F", "ESP-12F ESP8266 WiFi module", [24, 16, 0.8],
     ]
 );
 
+RCWL0516 = pcb(
+    "RCWL-0516", "Microwave Radar Sensor",
+    size = [36, 17.3, 1.2],
+    colour = "#17682d",
+    hole_d = 1.7,
+    holes = [
+          [  inch(0.05),  inch(0.05) ],
+          [ -inch(0.05),  inch(0.05) ],
+          [ -inch(0.05), -inch(0.05) ],
+          [  inch(0.05), -inch(0.05) ],
+          [ -inch(0.65), -inch(0.05) ],
+          [ -inch(0.65),  inch(0.05) ],
+    ],
+    grid = [inch(0.05), inch(0.13), 1,  5, silver, inch(0.1), inch(0.1)],
+  components = [
+        [inch(0.18), inch(0.13), 90,"smd_cap", CAP1206, 0.5],
+        [inch(0.18), inch(0.32), 90,"smd_cap", CAP1206, 0.5],
+        [inch(0.18), inch(0.54), 90,"smd_cap", CAP1206, 0.5],
+        [inch(0.45), inch(0.34),  0,"smd_soic", SOIC16, "RCWL9196"],
+            ]
+);
+
 tiny_buck = pcb("tiny_buck", "Ultra Small 3A buck regulator", [20, 11, 1.6],
     hole_d = 1.2,
     land_d = [2, 2],
@@ -1226,7 +1248,7 @@ tiny_pcbs = [ESP_201, ESP_01M, XIAO, ESP_12F, MP1584EN, ESP_01,tiny_buck, LIPO_f
 
 big_pcbs = [BTT_RELAY_V1_2, BTT_SKR_MINI_E3_V2_0, BTT_SKR_E3_TURBO, BTT_SKR_V1_4_TURBO, DuetE, Duex5];
 
-pcbs = [KY_040, TP4056, L9110S, ZC_A0591, MT3608, RAMPSEndstop, ArduinoNano, HW803_1WAY_RELAY, Feather405, RPI_Pico, ESP32_DOIT_V1, RPI0, EnviroPlus, ArduinoUno3, ArduinoLeonardo, WD2002SJ, OPZ2, PanelDue_v3, RPI3A, RPI3, RPI4];
+pcbs = [KY_040, TP4056, L9110S, ZC_A0591, RCWL0516, MT3608,RAMPSEndstop, ArduinoNano, HW803_1WAY_RELAY, Feather405, RPI_Pico, ESP32_DOIT_V1, RPI0, EnviroPlus, ArduinoUno3, ArduinoLeonardo, WD2002SJ, OPZ2, PanelDue_v3, RPI3A, RPI3, RPI4];
 
 pcbs_not_shown = [Melzi, Duex2, PSU12V1A, Keyes5p1, PI_IO, ExtruderPCB];
 

vitamins/rockers.scad

@@ -35,8 +35,8 @@ neon_spades  = [[spade4p8, 7.3, 0, -7, 0],
 //
 //                                                                               w   h   t
 //
-small_rocker   = ["small_rocker",   "Rocker Switch PRASA1-16F-BB0BW", 13, 19.8, 15, 21, 2, 12.8, 18.5, 11.8, 2.5,  -1, 3.8, small_spades];
-neon_indicator = ["neon_indicator", "Neon Indicator H8630FBNAL",      13, 19.8, 15, 21, 2, 12.8, 18.5, 12.5, 2.5,  0,  0.3, neon_spades];
+small_rocker   = ["small_rocker",   "Rocker Switch PRASA1-16F-BB0BW", 13, 19.25, 15, 21, 2, 12.8, 18.5, 11.8, 2.5,  -1, 3.8, small_spades];
+neon_indicator = ["neon_indicator", "Neon Indicator H8630FBNAL",      13, 19.25, 15, 21, 2, 12.8, 18.5, 12.5, 2.5,  0,  0.3, neon_spades];
 
 rockers = [small_rocker, neon_indicator];