synth_tools

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For sync; placed everything on PCB Checkpoint after tweaking footprints some more, starting over at 14hp Added hard sync input. But could also be made "round", using the current 12-position rotary switches are actually needed big board, requiring one 8-pin, one 14-pin and one with an eye towards doing it all in one module with WiFi, https://www.adafruit.com/product/2471 Arduino UNO R2, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf Arduino UNO R2, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf Arduino UNO R3, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf 8devices Carambola2, OpenWRT, industrial SoM computer, https://www.8devices.com/media/products/carambola2/downloads/carambola2-datasheet.pdf Pololu Breakout 16-pin 15.2x20.3mm 0.6x0.8\ Raspberry Pi Zero using through hole 3.3mm, height 9, Wuerth electronics 9774130960 (https://katalog.we-online.de/em/datasheet/9774130960.pdf,), generated with kicad-footprint-generator JST GH top entry Molex Picoflex Ribbon-Cable Connectors, 90814-0004, 4 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator JST SUR series connector, 502386-0270 (http://www.molex.com/pdm_docs/sd/5023860270_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.7mm, height 9, Wuerth electronics 9774070982 (https://katalog.we-online.de/em/datasheet/9774070982.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 3 times outer diameter, generated with kicad-footprint-generator Tantalum Capacitor SMD Kemet-T (3528-12 Metric), IPC_7351 nominal, (Body size source: https://www.vishay.com/docs/20019/rcwe.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-132-02-xxx-DV, 32 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py.

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