From dd55c814d19c23245b71a11bbbf9066eeed6d499 Mon Sep 17 00:00:00 2001
From: Jochen Vothknecht <jochen3120@gmail.com>
Date: Fri, 4 Mar 2022 08:35:09 +0100
Subject: [PATCH] Improved clip design; Moar commenting on stuff
---
pcb/10W/TransportProtection.scad | 35 +++++++++++++++++++++-----------
1 file changed, 23 insertions(+), 12 deletions(-)
diff --git a/pcb/10W/TransportProtection.scad b/pcb/10W/TransportProtection.scad
index 6b1e00d..55ca1d3 100644
--- a/pcb/10W/TransportProtection.scad
+++ b/pcb/10W/TransportProtection.scad
@@ -6,7 +6,7 @@ use <../../WebWeaver/scad/Util.scad>;
$fs = 0.5;
$fa = 1.0;
-
+// PCB = printed circuit board
pcb_w = 40.5;
pcb_h = 67.5;
pcb_r = 5; // edge radius
@@ -16,9 +16,19 @@ pcb_sc_off = 5; // offset of screw holes from edge
pcb_conn_w = 20;
pcb_conn_h = 3;
-$str = 3; // Material strength
+// the box which contains our stuff later
box_h = pcb_t + 2;
+// tc = triangular clip
+tc_intr = 2; // intrusion
+tc_w = 20;
+tc_l = 10; // base to "clipping" plane
+tc_h = 3; // height of the clip triangle
+
+// globals
+$str = 3; // Material strength
+$E = 0.001; // ε
+
module pcb(w=pcb_w, h=pcb_h, r=pcb_r, off=pcb_off) {
@@ -112,22 +122,23 @@ module triangularClipReceptacle(w=20, h=3, d=3) {
}
-module triangularClip(w=20, h=3, d=3, length=10) {
-
- h2 = h / 2;
- l = length;
+module triangularClip(w=tc_w, h=tc_h, intr=tc_intr, l=tc_l) {
+
+ h2 = h / 2;
_lx = 0.25; // TODO: calculate from angle!!!!
_x = l * _lx;
_hlx = h2 * _lx;
- translate([$str - 0.01, 0, h2]) triangularClipReceptacle(w, h, d);
+ translate([$str - 0.01, 0, h2]) triangularClipReceptacle(w, h, intr);
translate([0, w/2, 0]) rotate([90, 0, 0]) linear_extrude(w) polygon([
- [ 0, -l],
+ // [ 0, -l], // TODO: alternative positiion?
[ -_x, h + _hlx],
[$str, h],
- [$str, 0],
+ [$str, 0], // TODO: WHY is this redundant?!
+
+ [$str*1.7, -l],
[$str, -l],
]);
@@ -184,10 +195,10 @@ module TransportProtection(w=pcb_w, h=pcb_h, r=pcb_r, height=pcb_t, off=pcb_off,
// clipDisplacementX
- clDsX = w/2 + off + $str;
-
+ clDsX = w/2 + $str*2 - $E;
+
// outer edge height
- oEH = _boxH + height + TpOrChamfer +2 +1;
+ oEH = _boxH + height /* + TpOrChamfer */ +1; // +1;
for (i=[-1, 1]) translate([clDsX * i, 0, oEH]) rotate([0, 0, 90 + 90*i]) triangularClip();
--
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