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5.28194 0.978841 22.0001 vertex -5.27501 -1.04926 22.0001 facet normal -0.0974854 -0.989339 0.108192 facet normal -9.104778e-01 0.000000e+00 -4.135580e-01 facet normal -6.484954e-01 5.423488e-03 7.611992e-01 facet normal 0.0819688 -0.0815293 0.993295 vertex 4.10478 5.1829 7.85113 facet normal -0.471394 -0.881923 -0 vertex 5.96308 -8.22545 0 vertex -10.1904 0 0 Dual VCA, based roughly on Moritz Klein's work, but with buffering between (some) stages. Needs a TLC7524/AD7524 (a simple DAC that's still sorta analog) and a momentary-on button to advance the step LED + 23mm hole_left = slider_center - 13; hole_bottom = hole_top - 90; DivotRadius = KnobMinorRadius*.4; // Primary knob cylinder for (i=[0 : RingMarkings-1] rotate([0, 0, 180] // Left side: meta-step controls } module knurled_finish(ord, ird, lf, sh, fn, rn) { for(j=[0:rn-1]) assign(h0=sh*j, h1=sh*(j+1/2), h2=sh*(j+1)) { for(i=[0:fn-1]) assign(lf0=lf*i, lf1=lf*(i+1/2), lf2=lf*(i+1)) { polyhedron( points=[ [ 0,0,h0], [ ord*cos(lf0), ord*sin(lf0), h2], [ ird*cos(lf1), ird*sin(lf1), h2], [ ord*cos(lf2), ord*sin(lf2), h0], [ ord*cos(lf2), ord*sin(lf2), h0], [ ord*cos(lf2), ord*sin(lf2), h0], [ ord*cos(lf2), ord*sin(lf2), h0], [ ird*cos(lf1), ird*sin(lf1), h0], .

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