X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=hc-sr04.scad;h=2055eb414b4c4e8d8426445b29be25789d574504;hb=de6bb578c39b9d8e9ec1e6ba54026f6a2900da73;hp=2e040ffd1bcf14f8c998497ea5cc134540708a56;hpb=7a8f6bd13ad4eac8f76a185fa18d78bc792d5b8f;p=things.git

diff --git a/hc-sr04.scad b/hc-sr04.scad
index 2e040ff..2055eb4 100644
--- a/hc-sr04.scad
+++ b/hc-sr04.scad
@@ -4,34 +4,39 @@ infty = 100;
 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;
 
-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() {
-		// pcb and the space above it
+		// space above pcb
 		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])
-			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])
@@ -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);
+	// 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)
-	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() {
@@ -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);
 
-		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])
-			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();