knife-stand: first try

[things.git] / hc-sr04.scad

diff --git a/hc-sr04.scad b/hc-sr04.scad
index 2e040ffd1bcf14f8c998497ea5cc134540708a56..2055eb414b4c4e8d8426445b29be25789d574504 100644 (file)
--- a/hc-sr04.scad
+++ b/hc-sr04.scad
@@ -4,34 +4,39 @@ infty = 100;
 wall = 1.5;
 
 cyl_r = 8 + 0.5;
 wall = 1.5;
 
 cyl_r = 8 + 0.5;

-cyl_x = 27 / 2;
-cyl_h = 10; // above pcb, max 13.8;
+cyl_x = 26.6 / 2;
+cyl_h = 8; // above pcb, max 13.8;

 
 

-pcb_x = 45 + 0.5;
-pcb_y = 20 + 0.5;
-xtal_h = 4;
-pcb_supp = 3;
-pcb_h = 5; // 1.2 + space for connector etc
+pcb_x = 45.6 + 0.7;
+pcb_y = 20.2 + 0.5;
+xtal_h = 5;
+pcb_supp = 3; // side support thickness
+pcb_h = 8; // 1.2 + space for connector etc
+pcb_thick = 2.5;

 
 cyl_base = pcb_x/2 + wall - cyl_x;
 
 
 cyl_base = pcb_x/2 + wall - cyl_x;
 

-conn_x = 12.5;
-conn_y = 10;
+conn_x = 10 + 0.5;
+conn_y = 15;

 
 

-cable_w = 5;
-cable_h = 2;
+cable_w = 7;
+cable_h = 4;

 
 

-mount_h = 3;
-screw_sp = 5;
+screw_head = 7.5;
+screw_d = 4;
+screw_base = 2*wall;
+
+clip_r = 1;
+clip_h = 8;

 
 module sensor() {
        hull() {
 
 module sensor() {
        hull() {

-               // pcb and the space above it
+               // space above pcb

                translate([-pcb_x/2, -pcb_y/2, -eps])
                translate([-pcb_x/2, -pcb_y/2, -eps])

-                       cube([pcb_x, pcb_y, pcb_h+eps]);
+                       cube([pcb_x, pcb_y, pcb_h-pcb_thick+eps]);

                // connector
                translate([-conn_x/2, pcb_y/2-eps, -eps])
                // connector
                translate([-conn_x/2, pcb_y/2-eps, -eps])

-                       cube([conn_x, conn_y+eps, pcb_h+eps]);
+                       cube([conn_x, conn_y+eps, pcb_h-pcb_thick+eps]);

        }
        // cable protrusion
        translate([-cable_w/2, pcb_y/2+conn_y-eps, -eps])
        }
        // cable protrusion
        translate([-cable_w/2, pcb_y/2+conn_y-eps, -eps])


@@ -40,9 +45,12 @@ module sensor() {
        // cylinders
        for (x = [-1, 1]) translate([cyl_x*x, 0, pcb_h - eps])
                cylinder(r = cyl_r, h = cyl_h + 2+wall + eps);
        // cylinders
        for (x = [-1, 1]) translate([cyl_x*x, 0, pcb_h - eps])
                cylinder(r = cyl_r, h = cyl_h + 2+wall + eps);

+       // pcb
+       translate([-pcb_x/2, -pcb_y/2, pcb_h-pcb_thick-eps])
+               cube([pcb_x, pcb_y, pcb_thick+eps]);

        // space below the pcb (xtal, etc)
        // space below the pcb (xtal, etc)

-       translate([-pcb_x/2+pcb_supp, -pcb_y/2, pcb_h - eps])
-               cube([pcb_x - 2*pcb_supp, pcb_y, xtal_h+eps]);
+       translate([-pcb_x/2+pcb_supp, -pcb_y/2, pcb_h-pcb_thick - eps])
+               cube([pcb_x - 2*pcb_supp, pcb_y, xtal_h+pcb_thick+eps]);

 };
 module case_body() {
        hull() {
 };
 module case_body() {
        hull() {


@@ -54,39 +62,45 @@ module case_body() {
                for (x = [-1, 1]) translate([cyl_x*x, 0, pcb_h + cyl_h])
                        cylinder(r = cyl_base, h = wall);
 
                for (x = [-1, 1]) translate([cyl_x*x, 0, pcb_h + cyl_h])
                        cylinder(r = cyl_base, h = wall);
 

-               translate([0, 7, pcb_h + cyl_h])
+               translate([0, 8, pcb_h + cyl_h])

                        cylinder(r = cyl_base, h = wall);
 
                // connector
                translate([-conn_x/2-wall, pcb_y/2-wall, 0])
                        cylinder(r = cyl_base, h = wall);
 
                // connector
                translate([-conn_x/2-wall, pcb_y/2-wall, 0])

-                       cube([conn_x+2*wall, conn_y+2*wall, pcb_h+wall]);
-       }
-       for (x = [0, 180]) rotate([0, 0, x]) hull() {
-               // eps-wide cube
-               translate([pcb_x/2-eps, -4/2-wall, pcb_h + cyl_h + wall -eps])
-                       cube([eps, 4+2*wall, eps]);
-               // bottom plate
-               translate([pcb_x/2+wall, -screw_sp/2-wall, 0])
-                       cube([screw_sp+wall, screw_sp+2*wall, wall]);
+                       cube([conn_x+2*wall, conn_y+2*wall, pcb_h-pcb_thick+wall]);
+               // screw mounts
+               for (x = [1, -1]) scale([x, 1, 1])
+                       translate([pcb_x/2+wall, -screw_head/2-wall, 0])
+                               cube([screw_head, screw_head+2*wall, screw_base]);

        }
 }
 
        }
 }
 

-difference() {
-       case_body();
-       # sensor();
-       // mount holes
-       for (x = [0, 180]) rotate([0, 0, x]) {
-               translate([pcb_x/2+wall, -screw_sp/2, wall])
-                       cube([screw_sp +wall+eps, screw_sp, pcb_h + cyl_h + eps]);
-               translate([pcb_x/2+1+wall, -3/2, -eps])
-                       cube([3, 3, wall + 2*eps]);
+module case() {
+       difference() {
+               case_body();
+               difference() {
+                       sensor();
+                       // pcb clip
+                       translate([-clip_h/2, -pcb_y/2, pcb_h-pcb_thick-clip_r/2])
+                       rotate([0, 90, 0])
+                       cylinder(r=clip_r, h = clip_h, $fn = 4);
+               }
+               // mount holes
+               for (x = [-1, 1]) scale([x, 1, 1]) {
+                       translate([pcb_x/2+wall, -screw_head/2, screw_base])
+                               cube([screw_head+eps, screw_head, infty]);
+                       // screw hole
+                       translate([pcb_x/2+wall+screw_head/2-screw_d/2, -screw_d/2, -eps])
+                               cube([screw_d, screw_d, infty]);
+               }
+               // text
+               translate([0, 3.5, pcb_h + cyl_h + eps])
+                       rotate([0, 0, 90])
+                       linear_extrude(height=wall)
+                       text("CVT FI", font="DejaVu Sans:style=Bold", size=5,
+                               halign="center", valign="center");

        }
        }

-       // text
-       translate([0, 3, pcb_h + cyl_h + eps])
-               rotate([0, 0, 90])
-               linear_extrude(height=wall)
-               text("CVT FI", font="DejaVu Sans:style=Bold", size=5,
-                       halign="center", valign="center");
-

 }
 
 }
 

+rotate([180, 0, 0]) // rotate it for easier print
+       case();