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If going digital ** https://note.com/solder_state/n/nde97a0516f03 and https://www.youtube.com/watch?v=op_DhPr2goc ** arduino nano clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a gate. Main synth_tools/Schematics/SynthMages.pretty/6.3mm_NPTH_MAXJLCPCB.kicad_mod 24 lines 978eb1d01f Fix for component clearance, panel thickness from printer realities Fix for component clearance, panel thickness from printer realities L1 2 keahS oidaR DEF SW_Coded SW 0 0 Y N 1 F N DEF SW_SP3T SW 0 0 Y N 1 F N DEF SW_DIP_x09 SW 0 20 Y N 1 F N DEF R_SLIDE_POT RV 0 40 Y N 1 F N DEF SW_Push_LED SW 0 0 Y N 2 F N DEF SW_DIP_x11 SW 0 0 N N 1 F N DEF power_GND #PWR 0 0 Y N 1 F N DEF ao_symbols_Graphic GRAF 0 40 Y N 1 F N ALIAS SW_E3_SA3624 SW_E3_SA6432 SW_MMI_Q5-100 DEF SW_MEC_5E SW 0 0 Y N 1 F N DEF SW_SPDT_MSM SW 0 1 0 20.5 vertex 0.95 4.22131 20.5 vertex 0.95 0 20.5 facet normal 0.0373292 0.272847 0.961333 facet normal 1.803483e-15 -1.458500e-15 -1.000000e+00 facet normal 0.469189 0.877691 0.0975691 vertex 3.44415 8.31492 3 facet normal 6.404052e-01 7.680372e-01 1.329459e-04 vertex -1.021425e+02 1.042953e+02 4.255000e+01 facet normal -0.877713 -0.469149 0.0975696 vertex 4.9463 -7.512 4.51216 facet normal -0.243768 -0.297059 0.923219 facet normal 7.954739e-01 2.016707e-03 6.059846e-01 vertex -1.053382e+02 9.725134e+01 1.123243e+01 vertex -1.054439e+02 9.725134e+01 1.131388e+01 facet normal 0.314572 -0.147387 0.937721 vertex -7.0162 3.85359 19.9497 facet normal -0.247463 0.9638 0.099258 vertex -3.09017 9.51056 0 facet normal 8.100479e-01 3.569934e-03 5.863528e-01 vertex -1.089871e+02 9.725134e+01 9.510337e+00 facet normal -0.881816 -0.471442 -0.011941 facet normal -0.488315 0.595017 -0.63836 vertex -4.98882 3.33342 6.59 facet normal 0.730673 0.622319 0.280777 facet normal 4.195761e-04 0.000000e+00 -9.999999e-01 facet normal 9.430566e-01 3.976713e-03 3.326085e-01 facet normal 0.382337 0.0378714 0.923247 vertex 8.83032 1.72277 3.82299 vertex -3.66179 8.35972 3.76384 facet normal 0.118615 -0.286343 0.950757 vertex 4.73914 0.665604 18.8084 vertex 4.4 1.672 19.1916 vertex 2.91024 0.759069 19.1916 facet normal -0.367742 -0.111554 0.923213 facet normal -0.499974 -0.86604 1.36818e-05 vertex -2.69039 -1.09142 18.554 facet normal -0.828714 -0.0168607 0.559418 facet normal -0.299919 -0.561108 0.771496 vertex -4.7566 -7.11876 5.56266 facet normal 0.564081 -0.273132 0.779238 facet normal -0.161832 -0.533413 0.83023 facet normal 0.0285882 -0.094243 0.995139 vertex -2.96676 6.90035 6.0001 facet normal -0.38808 0.237822 0.890413 facet normal -5.967591e-01 8.024204e-01 1.230855e-04 vertex -9.325429e+01 1.047901e+02 4.255000e+01 facet normal 0.0973192 0.989361 0.108142 facet normal 0.630654 -0.768483 0.108209 facet normal 0.608831 0.184688 0.771502 vertex 3.27641 -7.90994 5.56266 facet normal 0.451284 0.844291 0.288991 facet normal 0.462421 -0.865136 0.194181 facet normal 9.342550e-01 -3.566057e-01 0.000000e+00 vertex -9.229838e+01 1.039874e+02 3.455000e+01 facet.

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