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latest changes

Thomas Buck 1 year ago
parent
commit
21f56b80ff
3 changed files with 272 additions and 18 deletions
  1. 4
    0
      firmware/README.md
  2. 245
    0
      hardware/external/pico_case.scad
  3. 23
    18
      hardware/trackball.scad

+ 4
- 0
firmware/README.md View File

@@ -33,6 +33,10 @@ This will use the mass storage bootloader to upload a new uf2 image.
33 33
 For old-school debugging a serial port will be presented by the firmware.
34 34
 Open it using eg. `picocom`, or with the included `debug.sh` script.
35 35
 
36
+For dependencies to compile, on Arch install these.
37
+
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+    sudo pacman -S arm-none-eabi-gcc arm-none-eabi-newlib picocom cmake
39
+
36 40
 ## Proper Debugging
37 41
 
38 42
 You can also use the SWD interface for proper hardware debugging.

+ 245
- 0
hardware/external/pico_case.scad View File

@@ -0,0 +1,245 @@
1
+resolution = 20; //[10, 20, 30, 50, 100]
2
+$fn = resolution;
3
+
4
+show_frame = false; // [true, false]
5
+show_pico = true; // [true, false]
6
+show_lid = false; // [true, false]
7
+show_button = false; // [true, false]
8
+
9
+module rounded_plate(w, h, t, d) {
10
+    translate([0, (d/2), 0])
11
+    cube([w, (h-d), t]);
12
+    translate([(d/2), 0, 0])
13
+    cube([(w-d), h, t]);
14
+    translate([(d/2), (d/2), 0])
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+    cylinder(h=t, d=d);
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+    translate([w-(d/2), (d/2), 0])
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+    cylinder(h=t, d=d);
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+    translate([(d/2), h-(d/2), 0])
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+    cylinder(h=t, d=d);
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+    translate([w-(d/2), h-(d/2), 0])
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+    cylinder(h=t, d=d);
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+}
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+
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+module usb_port() {
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+    translate([0.3, 0, 0])
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+    color("grey")
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+    difference() {
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+        union() {
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+            cube([7.4, 6, 2.7]);
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+            translate([-0.3, 5.4, -0.1])
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+            cube([8, 0.6, 2.9]);
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+        }
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+    }
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+}
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+
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+module switch() {
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+    color("grey")
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+    cube([3.5, 4.5, 1]);
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+    color("white")
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+    translate([(3.5/2), (4.5/2), 0])
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+    cylinder(h=1.5, d=3);
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+}
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+
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+p_w = 21;
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+p_h = 51;
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+p_t = 1.0;
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+os = 0.35;
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+b = 2;
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+
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+module pico() {
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+    translate([((p_w-8)/2), ((p_h+1.3)-6), p_t])
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+    usb_port();
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+
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+    translate([5.25, 36.6, 0.6])
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+    switch();
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+
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+    difference() {
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+        color("green")
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+        cube([p_w, p_h, 1]);
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+
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+        translate([((p_w/2)-5.7), 2, -0.01])
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+        cylinder(h=p_t+0.02, d=2.1);
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+       
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+        translate([(p_w-((p_w/2)-5.7)), 2, -0.01])
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+        cylinder(h=p_t+0.02, d=2.1);
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+
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+        translate([((p_w/2)-5.7), (p_h-2), -0.01])
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+        cylinder(h=p_t+0.02, d=2.1);
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+
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+        translate([(p_w-((p_w/2)-5.7)), (p_h-2), -0.01])
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+        cylinder(h=p_t+0.02, d=2.1);
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+    }
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+}
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+
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+if (show_pico) {
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+    translate([(os+b), (os+b), 3.4])
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+    pico();
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+}
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+
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+if (show_frame) {
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+    union() {
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+        difference() {
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+            // Outer frame
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+            rounded_plate(p_w+(2*(os+b)), p_h+(2*(os+b)), 10, (2*(os+b)));
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+            
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+            // Board cut-out
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+            translate([b, b, -1])
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+            cube([p_w+(2*os), p_h+(2*os), 12]);
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+            
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+            // USB port cut-out
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+//            translate([b+os+((p_w-10)/2), b+os+((p_h+1)-6), 3.4])
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+//            cube([10, 8, 4.7]);
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+            translate([b+os+((p_w-10)/2), b+(2*os)+p_h-1, 8.1])
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+            rotate([-90, 0, 0])
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+            rounded_plate(10, 4.7, 4.7, 2);
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+            
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+            // Lid release cut-out
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+            difference() {
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+                union() {
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+                    translate([b+os+((p_w-10)/2), -1, 10-1])
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+                    cube([10, 8, 2]);
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+                    translate([b+os+((p_w-6)/2), -1, 10-1])
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+                    rotate([-90, 0, 0])
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+                    cylinder(h=4, d=2); 
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+                    translate([b+os+((p_w-6)/2), -1, 10-2])
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+                    cube([6, 8, 3]);
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+                    translate([b+os+((p_w+6)/2), -1, 10-1])
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+                    rotate([-90, 0, 0])
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+                    cylinder(h=4, d=2); 
110
+                }
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+                translate([b+os+((p_w+10)/2), -1, 10-1])
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+                rotate([-90, 0, 0])
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+                cylinder(h=4, d=2); 
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+                translate([b+os+((p_w-10)/2), -1, 10-1])
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+                rotate([-90, 0, 0])
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+                cylinder(h=4, d=2); 
117
+            }
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+            
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+            // Outer frame
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+            translate([1, 1, 10-1.2])
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+            rounded_plate(p_w+(2*(os+b))-2, p_h+(2*(os+b))-2, 2, (2*(os+b))-2);
122
+
123
+            // Left top retainer cut-out
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+            translate([b+os+(p_w/2)-(3.2/2)-7.1, b+p_h+(2*os), 10-3+0.2])
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+            cube([3.2, 0.7, 1.0]);
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+
127
+            // Right top retainer cut-out
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+            translate([b+os+(p_w/2)-(3.2/2)+7.1, b+p_h+(2*os), 10-3+0.2])
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+            cube([3.2, 0.7, 1.0]);
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+
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+            // Left bottom retainer cut-out
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+            translate([b+os+(p_w/2)-(4/2)-7.1, b+os-0.7, 10-3+0.2])
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+            cube([4, 0.7, 1.0]);
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+
135
+            // Right bottom retainer cut-out
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+            translate([b+os+(p_w/2)-(4/2)+7.1, b+os-0.7, 10-3+0.2])
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+            cube([4, 0.7, 1.0]);
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+
139
+            // Left retainer cut-out
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+            translate([b-0.7, b+os+(p_h/2)-2, 10-3+0.2])
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+            cube([0.7, 4, 1.0]);
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+
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+            // Right retainer cut-out
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+            translate([b+(2*os)+p_w, b+os+(p_h/2)-2, 10-3+0.2])
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+            cube([0.7, 4, 1.0]);
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+        }
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+        
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+        // Left support rail
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+        translate([b+os+(p_w/2)-(3/2)-5.5, 0, 0])
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+        cube([3, p_h+(2*(os+b)), 3.4]);
151
+       
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+        // Right support rail
153
+        translate([b+os+(p_w/2)-(3/2)+5.5, 0, 0])
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+        cube([3, p_h+(2*(os+b)), 3.4]);
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+
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+        // Left top retainer
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+        translate([b+os+(p_w/2)-(2.2/2)-6.1, b+p_h+(2*os)-0.6, 3.4+1+0.5])
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+        cube([2.2, 0.6, 0.8]);
159
+
160
+        // Right top retainer
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+        translate([b+os+(p_w/2)-(2.2/2)+6.1, b+p_h+(2*os)-0.6, 3.4+1+0.5])
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+        cube([2.2, 0.6, 0.8]);
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+
164
+        // Left bottom retainer
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+        translate([b+os+(p_w/2)-(3/2)-5.7, b, 3.4+1+0.])
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+        cube([3, 0.6, 0.8]);
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+
168
+        // Right bottom retainer
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+        translate([b+os+(p_w/2)-(3/2)+5.7, b, 3.4+1+0.5])
170
+        cube([3, 0.6, 0.8]);
171
+    }
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+}
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+
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+if (show_lid) {
175
+    difference() {
176
+        union() {
177
+            translate([1+os, 1+os, 10-1.2])
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+            rounded_plate(p_w+(2*b)-2, p_h+(2*b)-2, 1, (2*b)-2);
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+            translate([(os+b), (os+b), 10-3])
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+            rounded_plate(p_w, p_h, 2, (2*b)-3);
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+            
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+            // Left top retainer
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+            translate([b+os+(p_w/2)-(2.2/2)-7.1, b+p_h+os, 10-3+0.4])
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+            cube([2.2, 0.6, 0.6]);
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+
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+            // Right top retainer
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+            translate([b+os+(p_w/2)-(2.2/2)+7.1, b+p_h+os, 10-3+0.4])
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+            cube([2.2, 0.6, 0.6]);
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+
190
+            // Left bottom retainer
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+            translate([b+os+(p_w/2)-(3/2)-7.1, b+os-0.5, 10-3+0.3])
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+            cube([3, 0.6, 0.6]);
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+
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+            // Right bottom retainer
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+            translate([b+os+(p_w/2)-(3/2)+7.1, b+os-0.5, 10-3+0.3])
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+            cube([3, 0.6, 0.6]);
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+
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+            // Left retainer
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+            translate([b+os-0.6, b+os+(p_h/2)-1.5, 10-3+0.3])
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+            cube([0.6, 3, 0.6]);            
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+
202
+            // Right retainer
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+            translate([b+os+p_w, b+os+(p_h/2)-1.5, 10-3+0.3])
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+            cube([0.6, 3, 0.6]);            
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+        }
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+
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+        // USB port cut-out
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+        translate([b+os+((p_w-10)/2), b+p_h+(2*os)-2, 10-4.2])
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+        cube([10, 8, 2.4]);
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+
211
+        // Lid release cut-out
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+        translate([b+os+((p_w-10)/2), -1, 10-4.2])
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+        cube([10, 8, 3]);
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+        
215
+        // Switch cut-out
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+        translate([(os+b)+7, (os+b)+38.85, 0])
217
+        cylinder(h=10, d=5);
218
+        
219
+        // Inset
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+        translate([(os+b)+1, (os+b)+1, 10-4])
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+        cube([p_w-2, p_h-2, 3]);
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+    }
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+    // Switch surround
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+    translate([(os+b), (os+b)+38.85-6, 10-2])
225
+    cube([p_w, 1, 1]);    
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+
227
+    translate([(os+b), (os+b)+38.85+5, 10-2])
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+    cube([p_w, 1, 1]);    
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+
230
+}
231
+
232
+
233
+if (show_button) {
234
+    color("red")
235
+    union() {
236
+        translate([(os+b)+7, (os+b)+38.85, 7.5])
237
+        cylinder(h=2.3, d=4.4);
238
+        difference() {
239
+            translate([(os+b)+7, (os+b)+38.85, 6.5])
240
+            cylinder(h=2, d=7.6);
241
+            translate([(os+b)+7, (os+b)+38.85, 6.5])
242
+            cylinder(h=1, d=6.6);
243
+        }
244
+    }
245
+}

+ 23
- 18
hardware/trackball.scad View File

@@ -48,9 +48,9 @@ use <external/pico_case.scad>
48 48
 //roller_mount_tri();
49 49
 
50 50
 //trackball_top();
51
-trackball_bottom();
51
+//trackball_bottom();
52 52
 
53
-//assembly();
53
+assembly();
54 54
 //print();
55 55
 
56 56
 // #######################
@@ -168,8 +168,8 @@ mx_travel = 3.9;
168 168
 
169 169
 base_dia = 62;
170 170
 
171
-m3_thread = 2.7;
172
-m2_thread = 1.8;
171
+grub_screw_dia = 2.8;
172
+grub_channel_dia = 4.0;
173 173
 
174 174
 roller_thread_dia = roller_dia + 5.0;
175 175
 roller_h = roller_dia + 7.0;
@@ -242,6 +242,19 @@ usb_cutout_h_add = 0.6;
242 242
 
243 243
 assembly_dist = 20;
244 244
 
245
+roller_holder_sider_cut = 1.5;
246
+roller_holder_h_compensation = -0.1;
247
+
248
+bottom_add_wall = 4;
249
+
250
+screw_dia = 3.2;
251
+screw_off = base_dia / 2 - 10;
252
+screw_head_d = 6.0;
253
+screw_head_h = 3.5;
254
+screw_angles = [ 15, -15, 180 + 15, 180 - 15 ];
255
+screw_insert_dia = 4.8;
256
+screw_insert_h = 6.0;
257
+
245 258
 function sphere_r_at_h(h, r) = r * sin(acos(h / r));
246 259
 function sphere_angle_at_rh(h, r) = acos(h / r);
247 260
 
@@ -397,17 +410,19 @@ module roller_holder() {
397 410
     difference() {
398 411
         color("magenta")
399 412
         union() {
400
-            // top screw part
401 413
             translate([0, 0,  roller_h-roller_dia/2 + roller_ball_h_off-3])
402 414
             cylinder(d1 = roller_mount_dia, d2=roller_dia+1,  h = 3);
403 415
             
404 416
             cylinder(d = roller_mount_dia, h = roller_h-roller_dia/2 + roller_ball_h_off-3);
405 417
         }
406 418
         
419
+        translate([-roller_mount_dia / 2 - 1, roller_mount_dia / 2 - roller_holder_sider_cut, -1])
420
+        cube([roller_mount_dia + 2, roller_mount_dia / 2 + 1, roller_h + 2]);
421
+        
407 422
         translate([0, 0, -$e])
408 423
         cylinder(d = roller_thread_hole, h = $e+ roller_h - roller_dia / 2 + roller_ball_h_off + roller_ball_hold_off);
409 424
     
410
-        translate([0, 0, roller_h - roller_dia / 2])
425
+        translate([0, 0, roller_h - roller_dia / 2 + roller_holder_h_compensation])
411 426
         sphere(d = roller_dia, $fn = $fn * 2);
412 427
 
413 428
         if (cut_roller_holder)
@@ -471,10 +486,10 @@ module roller_mount_tri_body() {
471 486
     translate([0, 0, -roller_h/2])
472 487
     rotate([0,-90,0])
473 488
     translate([-2, 0, 2]) {
474
-        cylinder(d = m2_thread, h = ball_dia);
489
+        cylinder(d = grub_screw_dia, h = ball_dia);
475 490
         
476 491
         translate([0, 0, roller_mount_dia / 4 + wall])
477
-        cylinder(d = m2_thread + 1, h = ball_dia);
492
+        cylinder(d = grub_channel_dia, h = ball_dia);
478 493
     }
479 494
         
480 495
     // sensor lens
@@ -685,8 +700,6 @@ module trackball_top() {
685 700
     }
686 701
 }
687 702
 
688
-bottom_add_wall = 4;
689
-
690 703
 module trackball_bottom_wrap() {
691 704
     %rotate([0, 180, 0])
692 705
     pico_wrap();
@@ -734,14 +747,6 @@ module usb_cutout() {
734 747
     }
735 748
 }
736 749
 
737
-screw_dia = 3.2;
738
-screw_off = base_dia / 2 - 10;
739
-screw_head_d = 6.0;
740
-screw_head_h = 3.5;
741
-screw_angles = [ 15, -15, 180 + 15, 180 - 15 ];
742
-screw_insert_dia = 4.8;
743
-screw_insert_h = 8.0;
744
-
745 750
 module trackball_bottom() {
746 751
     difference() {
747 752
         trackball_bottom_wrap();

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