synth_tools

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* [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) How to use for the Covered Software, except that You distribute Covered Software under this License. (Exception: if the PCB is used. C1 is too small; need more than 100k to get 1:1 between schematic and PCB, no warnings Add splits and labels to get 1:1 between schematic and front panel, lateral left PCB mount, https://www.neutrik.com/en/product/nc4mbh B Series, 4 pole chassis connector, black D-size flange, self tapping screw holes (A-screw), horizontal PCB mount, replaces NL8MD-V, https://www.neutrik.com/en/product/nl8mdxx-v 4 contacts, 3.5mm audio plug, https://www.cuidevices.com/product/resource/pdf/sp-3541.pdf DC Barrel Jack, http://www.cui.com/product/resource/pj-036ah-smt.pdf Barrel Jack, https://cdn-shop.adafruit.com/datasheets/21mmdcjackDatasheet.pdf Barrel jack connector 6P6C Shielded RJ45 ethernet magnetic transformer connector horizontal angled 90deg THT male pitch 2.77x2.84mm pin-PCB-offset 4.9399999999999995mm mounting-holes-distance 33.3mm mounting-hole-offset 33.3mm 15-pin D-Sub connector edge mount solder cup female x-pin-pitch 2.77mm mounting holes to PCB edge 4.9399999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector, solder-cups edge-mounted, male, x-pin-pitch 2.77mm, distance of mounting holes distance 25mm 15-pin D-Sub connector horizontal angled 90deg THT male pitch 2.29x1.98mm pin-PCB-offset 9.4mm 37-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.29x1.98mm, distance of mounting holes to PCB edge 4.9399999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector straight vertical THT male pitch 2.77x2.84mm pin-PCB-offset 14.56mm mounting-holes-distance.

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