synth_tools

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Normal 0.0992487 0.989167 0.108159 facet normal 0.55208 0.109816 -0.826528 vertex -2.89821 -0.0265122 18.9317 vertex -2.93351 -1.2151 18.7502 vertex 2.92253 -1.22544 18.7525 facet normal -0.976242 -0.096139 0.194186 facet normal 0.0624757 0.0761278 0.995139 vertex 2.87789 -6.94785 6.0001 facet normal -0.747986 0.192839 0.635083 facet normal -0.741926 -0.638679 0.204047 vertex 5.83811 4.33969 7.81812 facet normal -0.367742 -0.111554 0.923213 facet normal -0.5 -0.866026 -1.49618e-05 facet normal 0.360203 -0.282966 0.888923 facet normal -0.499999 0.866026 6.96236e-08 vertex 2.35938 1.82407 11.0482 facet normal -0.834578 0.268415 0.481075 facet normal -6.451590e-01 -7.640483e-01 0.000000e+00 vertex -9.698255e+01 1.060828e+02 1.855000e+01 facet normal 0.865129 -0.462433 0.194183 facet normal 4.127381e-001 -7.075891e-001 5.735546e-001 facet normal -0.421912 -0.362633 0.830956 facet normal -0.995174 -0.0974658 0.0113699 vertex -1.0528 7.12884 7.81019 facet normal 7.911608e-01 0.000000e+00 6.116082e-01 vertex -1.053382e+02 9.665134e+01 1.123243e+01 vertex -1.052763e+02 9.725134e+01 1.115112e+01 facet normal 0.869711 -0.0906015 0.485175 vertex 4.55282 4.55282 7.3242 facet normal -0.95694 -0.290287 0 vertex -9.06712 -2.79684 6.17307 vertex -6.01015 7.7867 1.4831 vertex -5.47263 -6.86246 12.1408 facet normal -0.0463745 -0.470877 0.880979 vertex 1.62595 -8.17421 5.74921 facet normal 0.195088 -0.980786 -2.44003e-06 facet normal 1.995070e-01 6.332426e-04 9.798962e-01 vertex -1.077753e+02 9.665134e+01 8.883403e+00 facet normal -9.627241e-01 -3.427783e-03 -2.704636e-01 facet normal -0.288281 0.956957 0.0335834 vertex 5.51437 1.05741 21.6407 facet normal 4.877140e-001 -8.337538e-001 2.588236e-001 vertex -4.285366e+000 3.266107e+000 2.470218e+001 facet normal -2.880153e-004 -5.040268e-004 -9.999998e-001 ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: make power connection traces larger; MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some supporting components. ~$6 in parts, mostly down to PCB edge 8.2mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.77x2.84mm, distance.

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