Improves the PCB slider by adding a tiny chamfer and widening at the ends, so insertion of the PCB is easier. Also increased the margins as the pcb fit pretty tight.

Author: Felix "xq" Queißner

Hardware/Case/case.scad

@@ -41,17 +41,17 @@ translate([0,169/2,0])
 
     translate([0,(slot_plate_thickness+frontpanel_thickness)/2,0]) foreach_slot()
     {
-        // translate([0,-0.8,0]) yrotate(180) xrotate(-90) 
-         translate([slot_pcb_offset-slot_pcb_thickness/2,-slot_plate_thickness/2,0])
-        color("green") zrotate(-90) xrotate(-90) import("../Mechanical Prototype/Expansion Board/Expansion Board.stl");
+        translate([slot_pcb_offset-slot_pcb_thickness/2,-slot_plate_thickness/2,0]) color("green") zrotate(-90) xrotate(-90) import("../Mechanical Prototype/Expansion Board/Expansion Board.stl");
+        
+        // translate([slot_pcb_offset,-slot_pcb_length/2-slot_plate_thickness/2,0]) mat_pcb() slot_pcb();
 
         xcon_slot_plate() xcon_expansion_dummy($i);
+        
 
         color("gray") zmirror() translate([slot_pcb_offset,-slot_pcb_length/2-slot_plate_thickness/2,-baseplate_spread + baseplate_thickness/2]) pcb_slider();
 
-        // translate([slot_pcb_offset,-slot_pcb_length/2-slot_plate_thickness/2,0])  mat_pcb() slot_pcb();
 
-        zmirror() translate([0,slot_plate_thickness/2,slot_screw_offset]) xrotate(90) screw_m2_5_4mm(); // screw_model(slot_screw_type, slot_screw_length );
+        zmirror() translate([0,slot_plate_thickness/2,slot_screw_offset]) xrotate(90) screw_m2_5_4mm();
     }
 }
 

Hardware/Case/parts/parameters.scad

@@ -67,14 +67,17 @@ frontpanel_thickness = 2.0;
 
 // PCB Sliders
 
-pcb_slider_pcb_margin = 0.15;
+pcb_slider_pcb_vmargin = 0.4;
+pcb_slider_pcb_hmargin = 0.2;
 pcb_slider_height = 6.6; // mm
-pcb_slider_width_top = 4; // mm
-pcb_slider_width_bot = 5; // mm
+pcb_slider_width_top = 4.5; // mm
+pcb_slider_width_bot = 5.5; // mm
 pcb_slider_holes = 3;
 pcb_slider_hole_margin = 10; // mm
 pcb_slider_case_margin = 5; // mm
 pcb_slider_hole_screw = M2_5;
+pcb_slider_bevel_len = 10; // mm
+pcb_slider_bevel_angle = 7.5; // deg
 
 // Automation Variables:
 RENDER_PART_2D = false;
@@ -84,9 +87,9 @@ RENDER_PART_3D = false;
 
 slot_screw_offset = slot_plate_height/2-slot_screw_inset;
 
-pcb_slider_depth = baseplate_spread - baseplate_thickness/2 - slot_pcb_height / 2 - pcb_slider_pcb_margin; // mm
-pcb_slider_notch_width_top = slot_pcb_thickness + 4 * pcb_slider_pcb_margin; // mm
-pcb_slider_notch_width_bot = slot_pcb_thickness + 2 * pcb_slider_pcb_margin; // mm
+pcb_slider_depth = baseplate_spread - baseplate_thickness/2 - slot_pcb_height / 2 - pcb_slider_pcb_vmargin; // mm
+pcb_slider_notch_width_top = slot_pcb_thickness + 4 * pcb_slider_pcb_hmargin; // mm
+pcb_slider_notch_width_bot = slot_pcb_thickness + 2 * pcb_slider_pcb_hmargin; // mm
 pcb_slider_length = slot_pcb_length - 2 * pcb_slider_case_margin; // mm
 
 echo(pcb_slider_depth, pcb_slider_height);

Hardware/Case/parts/pcb_slider.scad

@@ -1,52 +1,77 @@
 include <parameters.scad>
 use <../lib/common.scad>
 
-module pcb_slider_2d()
-{
-    size = [ slot_pcb_height, slot_pcb_length ];
-
-    h = pcb_slider_height;
-    hi = pcb_slider_depth; // TODO
-    wot = pcb_slider_width_top / 2;
-    wob = pcb_slider_width_bot / 2;
-    wit = pcb_slider_notch_width_top / 2;
-    wib = pcb_slider_notch_width_bot / 2;
-
-    polygon(points=[
-        [-wob,0],
-        [-wot,h],
-        [-wit,h],
-        [-wib,hi],
-        [wib,hi],
-        [wit,h],
-        [wot,h],
-        [wob,0],
-    ]);
+module pcb_slider_body_2d() {
+  size = [slot_pcb_height, slot_pcb_length];
+
+  h = pcb_slider_height;
+  hi = pcb_slider_depth; // TODO
+  wot = pcb_slider_width_top / 2;
+  wob = pcb_slider_width_bot / 2;
+  wit = pcb_slider_notch_width_top / 2;
+  wib = pcb_slider_notch_width_bot / 2;
+
+  polygon(
+    points=[
+      [-wob, 0],
+      [-wot, h],
+      [wot, h],
+      [wob, 0],
+    ]
+  );
+}
+
+module pcb_slider_notch_2d() {
+  size = [slot_pcb_height, slot_pcb_length];
+
+  h = pcb_slider_height;
+  hi = pcb_slider_depth; // TODO
+  wot = pcb_slider_width_top / 2;
+  wob = pcb_slider_width_bot / 2;
+  wit = pcb_slider_notch_width_top / 2;
+  wib = pcb_slider_notch_width_bot / 2;
+
+  polygon(
+    points=[
+      [-2 * wit, 2 * h],
+      [-wib, hi],
+      [wib, hi],
+      [2 * wit, 2 * h],
+    ]
+  );
 }
 
-module pcb_slider()
-{   
-    tdist = pcb_slider_length - 2 * pcb_slider_hole_margin;
-    hdist = tdist / (pcb_slider_holes-1);
-    
-    render() difference() 
-    {
-        xrotate(90) linear_extrude(height = pcb_slider_length, center=true) pcb_slider_2d();
-        union() for($i = [0: pcb_slider_holes-1]) {
-            off = hdist * $i -(pcb_slider_length/2 - pcb_slider_hole_margin);
+module pcb_slider() {
+  tdist = pcb_slider_length - 2 * pcb_slider_hole_margin;
+  hdist = tdist / (pcb_slider_holes - 1);
+
+  render() difference() {
+      xrotate(90) linear_extrude(height=pcb_slider_length, center=true) pcb_slider_body_2d();
+
+      union() {
+        xrotate(90) linear_extrude(height=2 * pcb_slider_length, center=true) pcb_slider_notch_2d();
 
-            translate([0,off,-1]) linear_extrude(height=pcb_slider_depth) screw_shaft_2d(pcb_slider_hole_screw);
-        }   
+        for ($i = [0:pcb_slider_holes - 1]) {
+          off = hdist * $i - (pcb_slider_length / 2 - pcb_slider_hole_margin);
 
+          translate([0, off, -1]) linear_extrude(height=pcb_slider_depth) screw_shaft_2d(pcb_slider_hole_screw);
+        }
+
+        ymirror() {
+          translate([0, pcb_slider_length / 2 - pcb_slider_bevel_len, 0]) xrotate(-pcb_slider_bevel_angle)
+              xrotate(90) yrotate(180) linear_extrude(height=3 * pcb_slider_bevel_len, center=true) pcb_slider_notch_2d();
+        }
+      }
     }
 }
 
-if (RENDER_PART_2D)
-{
-    pcb_slider_2d();
+if (RENDER_PART_2D) {
+    difference() {
+        pcb_slider_body_2d();
+        pcb_slider_notch_2d();
+    }
 }
 
-if (RENDER_PART_3D)
-{
-    pcb_slider();
+if (RENDER_PART_3D) {
+  pcb_slider();
 }

Hardware/Case/workspace.scad

@@ -12,19 +12,25 @@ include <parts/frontpanel.scad>
 include <parts/slot_plate.scad>
 include <parts/slot_pcb.scad>
 
-xcon_slot_plate()
-{
-    // xcon_rs232();
-    // xcon_vga();
-    // xcon_cinch();
-    // xcon_usb_c();
-    // xcon_usb_a();
-    // xcon_usb_av();
-    // xcon_pinheader_12x2();
-    // xcon_din6();
-    // xcon_ms_x2();
-    // xcon_pi4();
-    // xcon_rj45();
-    // xcon_hdmi();
-}
+// xcon_slot_plate()
+// {
+//     // xcon_rs232();
+//     // xcon_vga();
+//     // xcon_cinch();
+//     // xcon_usb_c();
+//     // xcon_usb_a();
+//     // xcon_usb_av();
+//     // xcon_pinheader_12x2();
+//     // xcon_din6();
+//     // xcon_ms_x2();
+//     // xcon_pi4();
+//     // xcon_rj45();
+//     // xcon_hdmi();
+// }
 
+pcb_slider();
+// difference() {
+//     pcb_slider_body_2d();
+
+//     # pcb_slider_notch_2d();
+// }