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Release envelope generator synth module. Layout and panel are Kosmo format. * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md ## GitHub repository * [https://github.com/holmesrichards/precadsr](https://github.com/holmesrichards/precadsr) * [https://gitlab.com/rsholmes/precadsr](https://gitlab.com/rsholmes/precadsr This repo uses submodules aoKicad and Kosmo\_panel. To clone: submodules avoid non-circular holes in footprints whenever possible; some fabs charge more for ovals - 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 Everything by Hagiwo (quantizer, filters, noisemakers, etc) MIDI-to-CV, either over USB or directly over 5-pin DIN (with optoisolator Deleting the wiki page "Module Spellbook" cannot be undone. Continue? Facet normal 0.388502 -0.486762 0.782387 vertex -4.64974 4.64974 7.16319 vertex -6.74156 0 7.03201 facet normal 3.874196e-001 6.779849e-001 6.246940e-001 facet normal -1.284294e-001 -2.247515e-001 9.659154e-001 vertex 1.723051e+000 5.006375e+000 2.494118e+001 facet normal 0.816088 -0.545288 -0.191472 facet normal -0.554737 -0.0546401 0.83023 facet normal 0.257261 -0.262755 0.929934 vertex 0.431314 -7.35291 6.95641 facet normal -0.0973393 -0.995186 0.0113559 vertex -1.07374 5.71699 21.335 facet normal -0.881919 0.471401 0 facet normal -0.0624745 0.0761286 0.995139 vertex 1.52046 7.64388 5.97318 facet normal 0.586527 0.714665 0.381104 facet normal -0.995186 0.0980092 3.9263e-06 facet normal -0.12473 0.987208 0.0993096 facet normal -0.595015 0.488318 -0.638359 facet normal -0.137484 0.57263 0.808204 facet normal 0.688661 0.165334 0.705983 vertex 2.42348 -0.642209 19.4867 facet normal 2.500686e-13 -1.000000e+00 7.955446e-13 facet normal 4.926593e-001 -8.446044e-001 2.095953e-001 facet normal 0.0943295 0.991506 0.089547 vertex -4.11812 -5.19155 7.7465 facet normal 0.0759133 -0.77078 0.632562 facet normal -0.844851 -0.256282 0.469623 vertex -3.40084 -8.21035 5.07603 facet normal 0.64375 -0.528267 0.553643 facet normal 4.103484e-06 -1.000000e+00 -3.763539e-07 facet normal -0.0817448 -0.0561705 0.995069 vertex -2.95756 -7.53573 19.9509 vertex -4.70605 8.15112 20.0916 facet normal -0.0906015 -0.869711 0.485175 vertex -4.55282 4.55282 7.3242 facet normal 0.125325 0.992116 -0 facet normal 0.0419323 0.554724 0.830977 vertex 7.31348 -0.673589 7.09873 facet normal 6.60207e-05 -0.115483 0.993309 facet normal -0.88192 -0.471399 -4.52508e-06 facet normal 0.768557 0.63056 0.108238 facet normal 0.331801 -0.353615 0.874566 facet normal 0.996728 -0.0397752 -0.0703603 vertex -5.47263 -6.86246 12.1408 facet normal 0.807217 0.0635208 0.586827 vertex 1.95005 -0.326085 19.9 vertex 6.04355 2.39281 20 vertex -6.47214 -4.70228 20 vertex 6.91689 0.398636 20 vertex -3.48287 5.48813 20 vertex.

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