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BackUnescape Hardware/PCB/precadsr/precadsr.pro Normal file View File 3D Printing/Pot_Knobs/potknob_parametric.scad Executable file Unescape Hardware/Panel/precadsr-panel/precadsr-panel.pretty/precadsr-panel-art.kicad_mod Normal file View File Panels/FireballSpell_Large_bw.png.svg Normal file Unescape module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt) { cord=(cod+cdp+cdp*smt/100)/2; cird=cord-cdp; cfn=round(2*cird*PI/cwd); clf=360/cfn; crn=ceil(chg/csh); echo("knurled cylinder min diameter: ", 2*cird); if( fsh < 0 shape(fsh, cird+cdp*smt/100, cord, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg x0= 0; x1 = hsh > 0 ? Ord : ird; y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( hsh >= 0 ) { union() { difference(){ color([.1,.1,.1]) panel(width); // waves out // input sockets surface("FIREBALL VCO.png", center=true, invert=false); module label(string, size=4, halign="center", height=thickness+1, font=default_label_font) { color([1,0,0]) linear_extrude(height) text(string, size, halign=halign, font=font_for_title); //} // draw a horizontal wall (across the panel module h_wall(h, l, th=thickness) { module v_wall(h, w) { // draw a "vertical" wall to mount the circuit board to, dead center // one more to mount the circuit board to, dead center // one more vertical to mount a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.analog.com/media/en/technical-documentation/data-sheets/199399fc.pdf TO-92 2-pin leads in-line.
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