synth_tools

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3.47343 8.29927 3.82299 facet normal 0.338843 -0.0729619 0.938009 vertex 4.97515 -5.38424 6.90036 vertex -7.39065 -0.0879059 6.86646 facet normal -9.659187e-001 -4.300158e-003 2.588098e-001 facet normal 0.0974275 -0.989344 0.108195 facet normal -7.377639e-01 0.000000e+00 -6.750588e-01 facet normal 8.999816e-01 2.357160e-03 4.359215e-01 vertex -1.052496e+02 9.725134e+01 1.110874e+01 vertex -1.052281e+02 9.725134e+01 1.106430e+01 facet normal 0.86972 0.0905846 0.485161 facet normal -9.062952e-001 -4.034721e-003 4.226258e-001 facet normal 0.69044 0.423077 0.58677 vertex 2.36512 -1.4028 19.9 facet normal 3.921799e-001 -6.752338e-001 6.247033e-001 vertex -6.183045e-001 4.315173e+000 2.484855e+001 facet normal -0.865139 -0.436801 0.246453 facet normal -9.938924e-02 2.691911e-03 -9.950450e-01 facet normal -8.092075e-01 0.000000e+00 -5.875229e-01 vertex -1.076659e+02 9.715134e+01 5.903821e+00 facet normal -0.938725 0.284755 0.194192 facet normal -0.0419816 0.554754 0.830954 vertex -7.31983 0.636408 7.07423 facet normal 0.144952 0.617515 0.773087 vertex 5.07598 -4.42088 7.17947 facet normal -0.0980045 -0.995186 -0 vertex -5.91609 -7.41854 6.17308 vertex -5.16065 6.47126 19.9688 facet normal -0.995174 -0.0974658 0.0113699 vertex -1.0528 7.11659 7.9152 facet normal 0.0974598 -0.995174 0.0114215 vertex 7.18529 -1.05962 7.92322 facet normal 5.564408e-02 9.984506e-01 -3.482704e-04 vertex -9.718411e+01 9.171143e+01 2.550000e+00 facet normal -0.877714 0.469149 0.0975597 facet normal -0.33413 0.625115 0.7054 facet normal -4.282516e-16 -1.042696e-15 -1.000000e+00 facet normal 0.683044 -0.365094 0.63258 vertex 8.08229 3.34779 5.33536 facet normal -0.629624 -0.768293 0.115323 vertex -4.6286 0 21.7443 facet normal -2.665685e-01 5.249985e-03 9.638017e-01 vertex -1.081512e+02 9.665134e+01 1.136574e+01 vertex -1.078909e+02 9.695134e+01 1.143935e+01 facet normal 8.724472e-001 3.884437e-003 4.886929e-001 facet normal -0.652557 -0.754466 0.0703566 facet normal -4.949282e-001 -8.661245e-001 6.981707e-002 vertex 2.724904e+000 3.050906e+000 2.470218e+001 facet normal -0.111553 0.367738 0.923214 facet normal 0.07297 -0.0676954 0.995034 vertex 0.505698 7.98874 19.9508 facet normal -0.124621 -0.886065 0.446496 vertex 5.20841 4.17623 7.5439 facet normal 0.338909 0.18114 0.923217 facet normal -7.775532e-01 6.288171e-01 -3.272236e-04 vertex -9.166787e+01 1.032668e+02 2.550000e+00 facet normal 0.362633 0.421912 0.830956 vertex -4.72589 5.62591 7.07423 facet normal -0.469146 -0.877714 0.0975761 vertex -3.49795 -8.28616 4.51215 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 example modules Envelope/Envelope.kicad_pcb | 2 | 10k | Resistor | | J3 | 1 | SW_3PDT_x3 | Switch, single pole normally-open illuminated tactile switch switch normally-open pushbutton push-button D Push button switch OFF-(ON CMOS General Purpose Timer, 555 compatible, PDIP-8 | | | | C10 | 1 nF | Unpolarized capacitor | | | | J7, J8, J9 | 1 Hardware/Panel/precadsr-panel/fp-lib-table | 2 | 1M.

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