X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=hc-sr04.scad;fp=hc-sr04.scad;h=d3913559dec5eebd77d78e03c19055dc4273618b;hb=76115d7cd2998520bce4b65094dd96fb67825c18;hp=0000000000000000000000000000000000000000;hpb=a3e62ade9b96ec057b5c624103e9738ddcb39fa0;p=openparking.git

diff --git a/hc-sr04.scad b/hc-sr04.scad
new file mode 100644
index 0000000..d391355
--- /dev/null
+++ b/hc-sr04.scad
@@ -0,0 +1,106 @@
+eps = 0.01;
+infty = 100;
+
+wall = 1.5;
+
+cyl_r = 8 + 0.5;
+cyl_x = 26.6 / 2;
+cyl_h = 8; // above pcb, max 13.8;
+
+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 = 10 + 0.5;
+conn_y = 15;
+
+cable_w = 7;
+cable_h = 4;
+
+screw_head = 7.5;
+screw_d = 4;
+screw_base = 2*wall;
+
+clip_r = 1;
+clip_h = 8;
+
+module sensor() {
+	hull() {
+		// space above pcb
+		translate([-pcb_x/2, -pcb_y/2, -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-pcb_thick+eps]);
+	}
+	// cable protrusion
+	translate([-cable_w/2, pcb_y/2+conn_y-eps, -eps])
+		cube([cable_w, 2*wall + eps, cable_h]);
+
+	// 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-pcb_thick - eps])
+		cube([pcb_x - 2*pcb_supp, pcb_y, xtal_h+pcb_thick+eps]);
+};
+module case_body() {
+	hull() {
+		// pcb
+		translate([-pcb_x/2-wall, -pcb_y/2-wall, 0])
+			cube([pcb_x+2*wall, pcb_y+2*wall, pcb_h+wall]);
+
+		// cylinders
+		for (x = [-1, 1]) translate([cyl_x*x, 0, pcb_h + cyl_h])
+			cylinder(r = cyl_base, h = wall);
+
+		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-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]);
+	}
+}
+
+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_head/2, -eps])
+				cube([screw_d, screw_head, 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");
+	}
+}
+
+rotate([180, 0, 0]) // rotate it for easier print
+	case();