synth_tools

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Straightforward build: one op-amp, four transistors and some example modules schematic start, and some example modules main 5a4e89eea6 Add position for resistor between coarse and +12V, value unknown 5a4e89eea63bf71c8fd68e1168f096dfb3459aa4 More cleanup d12ec1f19bbae8f01395e4c76a152d3d4ce7a3d4 More repo cleanup, adopt github .gitignore file # Temporary files fp-info-cache # Netlist files (exported from Pcbnew) *.dsn *.ses Fireball/Fireball VCO saw wave core.circuitjs.txt 90 lines main synth_tools/MIXER.diy 7027 lines From 408241e78a38abff54875c129b6d9f2cb52bc81d Mon Sep 17 00:00:00 2001 Subject: [PATCH] Checkpoint in case of crashes 943ef1409b Fix getting a bunch of diodes and support Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.analog.com/media/en/technical-documentation/data-sheets/8063fa.pdf Altera BGA-36 V36 VBGA BGA-48 - pitch 0.8 mm Highspeed card edge connector for 2.4mm PCB's with 40 contacts (polarized Highspeed card edge connector for 1.6mm PCB's with 20 contacts (not polarized Highspeed card edge card connector socket for 1.57mm PCBs, vertical, alignment pins (source: https://suddendocs.samtec.com/prints/hsec8-1xxx-xx-xx-dv-x-xx-footprint.pdf 0.8 mm Highspeed card edge connector for 2.4mm PCB's with 05 contacts (not polarized Highspeed card edge connector for PCB's with 30 contacts (not polarized Highspeed card edge card connector socket for 1.57mm PCBs, vertical, alignment pins, weld tabs (source: https://suddendocs.samtec.com/prints/hsec8-1xxx-xx-xx-dv-x-xx-footprint.pdf 0.8 mm Highspeed card edge connector for 1.6mm PCB's with 08 contacts (not polarized Highspeed card edge connector for PCB's with 20 contacts (polarized Highspeed card edge connector for PCB's with 50 contacts (not polarized Highspeed card edge connector for PCB's with 60 contacts (not polarized Highspeed card edge connector for PCB's with 05 contacts (not polarized Highspeed card edge connector for panel, 90° PCB mount (https://www.amphenolltw.com/2012download/2D%20PDF/03_M%20Series%20Sensor%20Connectors/M8S-XXPMMR-SF8001.pdf 3.5 mm, Stereo, Right Angle, Surface Mount, ZIF, 24 Circuits (https://www.molex.com/pdm_docs/sd/2005280240_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py EQFP, 144 Pin (http://ww1.microchip.com/downloads/en/PackagingSpec/00000049BQ.pdf#page=425), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-149-02-xxx-DV, 49 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator JST XA series connector, BM07B-GHS-TBT (http://www.jst-mfg.com/product/pdf/eng/eGH.pdf), generated with kicad-footprint-generator Hirose DF11 through hole, DF11-18DP-2DSA, 9 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator Molex Nano-Fit Power Connectors, 105313-xx06, 6 Pins per row (https://www.hirose.com/product/en/products/FH12/FH12-24S-0.5SH(55)/), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 501920-5001, 50 Pins per row (http://www.molex.com/pdm_docs/sd/1053141208_sd.pdf), generated with kicad-footprint-generator JST ZE series connector, 202396-0407 (http://www.molex.com/pdm_docs/sd/2023960207_sd.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, 502585-0870 (http://www.molex.com/pdm_docs/sd/5025850270_sd.pdf), generated with kicad-footprint-generator Soldered wire connection, for 5 times 0.127 mm² wires, reinforced insulation, conductor diameter 1.25mm, outer diameter.

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