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86 lines
2.2 KiB
86 lines
2.2 KiB
7 years ago
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/*
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Open freecad, select Workbench OpenSCAD
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import file, select group and export to
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VRML 2.0 (wrl file)
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https://www.freecadweb.org/wiki/Import_OpenSCAD_code
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*/
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n_switches=4; // number of dip switches
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pitch=2.54; // pin pitch
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body=[(n_switches+0.5)*pitch, 3*pitch, 1.5*pitch];
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height=pitch/8; // body above z axis
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swhole=[pitch*0.5,pitch,pitch*0.5];
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button=[pitch*0.4,pitch*0.4,pitch*0.5];
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font = "Liberation Sans";
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letter_size = pitch/2;
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letter_height = pitch/16;
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module letter(l)
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{
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// Use linear_extrude() to make the letters 3D objects as they
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// are only 2D shapes when only using text()
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linear_extrude(height = letter_height)
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{
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text(l, size = letter_size, font = font, halign = "center", valign = "center", $fn = 16);
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}
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}
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// 2 pins for 1 switch
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module pin_smd()
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{
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translate([0,0,pitch/8])
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cube([pitch/3,pitch*0.75,pitch/4],center=true);
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}
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module dipsw_smd()
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{
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translate([0,0,body[2]/2+height]) // little above
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union()
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{
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// cut off holes for switches
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difference()
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{
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color("maroon")
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cube(body,center=true);
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// holes for switches
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for(i = [0:n_switches-1])
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{
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color("maroon")
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translate([(i-n_switches/2+0.5)*pitch,0,body[2]/2-swhole[2]/2+0.01])
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cube(swhole,center=true);
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}
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}
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// place the switch buttons and letters
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for(i = [0:n_switches-1])
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{
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translate([(i-n_switches/2+0.5)*pitch,swhole[1]/2-button[1]/2-(swhole[0]-button[0])/2,body[2]/2-button[2]/2+0.01])
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color("white")
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cube(button,center=true);
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translate([(i-n_switches/2+0.5)*pitch,-body[1]/2+letter_size,body[2]/2])
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color("white")
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letter(chr(48+(i+1)%10));
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}
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// text "ON"
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translate([(0-n_switches/2+0.5)*pitch, body[1]/2-letter_size,body[2]/2])
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color("white")
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letter("ON");
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// the pins
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for(i = [0:n_switches-1])
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{
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// pins
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for(j = [-1:2:1])
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translate([(i-n_switches/2+0.5)*pitch, j*(body[1]/2+pitch*0.75/2),-body[2]/2-height+pitch/8])
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color("white")
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cube([pitch/3,pitch*0.75,pitch/4],center=true);
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}
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}
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}
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//scale(0,254) // proper scale for KiCAD WRL file
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// rotate([0,0,90])
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dipsw_smd();
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