From: Jan "Yenya" Kasprzak Date: Wed, 15 Jan 2014 10:05:13 +0000 (+0100) Subject: heater-base.scad: Proof of concept case bottom X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=62e66db3d05dc177bf08d8ce365f582fafbf63a4;p=heater.git heater-base.scad: Proof of concept case bottom --- diff --git a/heater-base.scad b/heater-base.scad new file mode 100644 index 0000000..a3a5706 --- /dev/null +++ b/heater-base.scad @@ -0,0 +1,87 @@ +// 18650 is ~18mm diameter, ~65mm length, +batt_diam = 18; +batt_len = 65+1; +batt_clip_h = 0.75 * batt_diam; +wall = 2.2; + +eps = 0.01; +infty = 300; + +pcb_len = 36; +pcb_thick = 1.3; +pcb_groove = 2; +pcb_width = 11; +pcb_clip_off = 5; +pcb_clip_w = 8; + +wire_thick = 2; +wire_sep = 3; + +translate([0, -batt_diam/2-wall-pcb_thick/2+eps, 0]) +difference() { + union() { + // lower part of the PCB holder + translate([0, 0, (pcb_groove + wall) / 2]) + cube([pcb_len + 2*wall, pcb_thick + 2*wall, pcb_groove + wall], center=true); + // rear part of the PCB holder (behind S1) + translate([pcb_clip_off, 0, 0]) + cube([pcb_clip_w, pcb_thick/2+wall/2, pcb_width + 2*wall]); + // side part of the PCB holder (near the battery wires) + translate([-pcb_len/2-wall, -pcb_thick/2-wall, 0]) + cube([pcb_groove+wall, pcb_thick+1.5*wall, pcb_width + 2*wall]); + }; + // the PCB itself + translate([0, 0, wall + pcb_width/2]) + cube([pcb_len, pcb_thick, pcb_width+eps], center=true); +}; + +difference() { + union() { + // lower part of the battery holder + translate([0, 0, pcb_groove/2 + wall/2]) + cube([batt_len + 2*wall, batt_diam + 2*wall, pcb_groove + wall], + center=true); + // rear part of the battery clip + translate([-(batt_len/2-pcb_len/2+pcb_groove+wall)/2-pcb_len/2+pcb_groove, 0, batt_clip_h/2+wall/2]) + cube([batt_len/2-pcb_len/2+pcb_groove + wall, batt_diam + 2*wall, batt_clip_h + wall], center=true); + // front (+) part of the battery clip + translate([batt_len/2+wall/2, 0, batt_clip_h/2+wall/2]) + hull() { + cube([wall, batt_diam + 2*wall, batt_clip_h + wall], center=true); + translate([-10/2, 0, -batt_clip_h/2]) + cube([10, batt_diam+2*wall, wall], center=true); + }; + // middle clips + translate([pcb_clip_off+pcb_clip_w/2, 0, batt_clip_h/2+wall/2]) + hull() { + cube([pcb_clip_w, batt_diam + 2*wall, batt_clip_h + wall], center=true); + translate([0, 0, -batt_clip_h/2]) + cube([2*pcb_clip_w, batt_diam+2*wall, wall], center=true); + }; + }; + // battery + translate([-batt_len/2, 0, batt_diam/2+wall]) + rotate([0, 90, 0]) + cylinder(r=batt_diam/2, h = batt_len); + // top part rounded + difference() { + translate([0, 0, infty/4 + wall + batt_diam/2]) + cube([infty/2, infty/2, infty/2], center=true); + translate([-infty/2, 0, batt_diam/2+wall]) + rotate([0, 90, 0]) + cylinder(r=batt_diam/2+wall, h = infty); + }; + // wire holes + for (j=[-wire_sep/2, wire_sep/2]) + for (i=[-wire_sep/2, wire_sep/2]) + translate([-infty/2, i, batt_diam/2 + wall+j]) + rotate([0, 90, 0]) + rotate([0, 0, 90]) + cylinder(r=wire_thick/2, h = infty, $fn=6); + + translate([-infty/2, -batt_diam/2, wall + pcb_groove + wire_thick/2]) + rotate([0, 90, 0]) + rotate([0, 0, 90]) + cylinder(r=wire_thick/2, h = infty, $fn=6); +}; +