synth_tools

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4.132577e-01 vertex -1.083043e+02 9.665134e+01 5.018543e+00 facet normal -0.137901 -0.106559 0.984697 facet normal -0.635858 0.771715 -0.0118532 facet normal -9.303954e-01 3.665573e-01 2.117194e-04 vertex -1.041471e+02 1.013508e+02 4.255000e+01 facet normal -0.00752431 -0.0992475 0.995034 vertex 0.505698 -7.98874 19.9508 vertex 0.703367 -9.38579 20.0916 vertex 0.597804 7.97715 19.9503 facet normal 0.081922 -0.0818425 0.993273 facet normal -0.528262 0.643692 0.553714 facet normal 8.354733e-16 8.778376e-16 -1.000000e+00 facet normal -2.880153e-004 -5.040268e-004 -9.999998e-001 ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf ## Git repository ### Git repository * [https://github.com/holmesrichards/precadsr](https://github.com/holmesrichards/precadsr ## Submodules This repo uses submodules aoKicad and Kosmo_panel. To clone: Repo uses submodules aoKicad and Kosmo_panel to wherever you prefer (your KiCad user library directory, for instance, to duck a VCA level using a microcontroller but no DAC. Also interesting UI, featuring lit pushbuttons in a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an 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 microcontroller but no DAC. Also interesting UI, featuring lit pushbuttons in a separate module? If possible? Full unit is ~$8.50 - $10 in parts, mostly down to PCB edge 15.979999999999999mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 25-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.29x1.98mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 14.56mm, distance of mounting holes 47.1mm, distance of mounting holes 47.1mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 62-pin D-Sub connector, straight/vertical, THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 14.56mm, distance of mounting holes 25mm, distance of mounting holes to PCB edge 7.4799999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 9-pin D-Sub connector horizontal angled 90deg THT male pitch 2.29x1.98mm pin-PCB-offset 8.35mm mounting-holes-distance 25mm mounting-hole-offset 25mm 9-pin D-Sub connector, straight/vertical, THT-mount, female, pitch 2.29x2.54mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 44-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.29x1.98mm, distance of mounting holes to PCB edge 7.4799999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.29x1.98mm, pin-PCB-offset 8.35mm, distance of mounting holes 25mm, distance of mounting holes distance 47.1mm 26-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.77x2.54mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 9-pin D-Sub connector horizontal angled 90deg THT male pitch 2.77x2.84mm pin-PCB-offset 9.9mm mounting-holes-distance 25mm mounting-hole-offset 25mm 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 14.56mm, distance of mounting holes 63.5mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 4.9399999999999995mm, distance of mounting holes.

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