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Expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules f80e4975fb checkpoint before getting really weird with WireIt Schematics/Unseen Servant/Unseen Servant_slider_board_noncanonical.kicad_prl main synth_tools/3D Printing/Cases/Eurorack 2-Row History Latest commits for branch traces_before_hard_sync traces added but maybe won't keep a704d3e530 More traces and vias, and net links Add four more switches/buttons, move LED drivers onto PCB added the once through idea with commentary by Correcting changed filename in .prl gets jiggy with PCB locator, 6 Pins per row (http://www.molex.com/pdm_docs/sd/1053101208_sd.pdf), generated with kicad-footprint-generator JST VH top entry JST GH series connector, S2B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 16 Pin (https://www.st.com/resource/en/datasheet/stp08cp05.pdf#page=20), generated with kicad-footprint-generator ipc_noLead_generator.py DFN, 6 Pin (http://www.onsemi.com/pub/Collateral/NCP133-D.PDF), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-146-02-xx-DV-TE, 46 Pins per row (https://www.hirose.com/product/document?clcode=CL0537-0834-6-81&productname=DF12E(3.0)-50DP-0.5V(81)&series=DF12&documenttype=2DDrawing⟨=en&documentid=0000992393), generated with kicad-footprint-generator JST PH series connector, B9P-VH (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator.

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