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During soldering - ground planes are copper fill applied everywhere there isn't a trace on the same size as traces - .3mm for non-power lines, .6mm if carrying power - MK uses a CA3080 OTA, an 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 Latest commits for file Datasheets/tl074.pdf Add tl074 datasheet/pinout 303a55e236 organize a bit revised README.md to rev 2 beta by adding +5V, and both trigger/gate and CV routing updates to rev 2 beta edits README.md file 33729ec97f6dd2ed68c4ca06088ce0b21651948d Align panel to integer pseudo-origin, remove testing text, decrease title label font so we don't lose it bd1352a047 Fix annoyance of 2x05 IDC header THT 2x27 2.00mm double row Through hole IDC header, 2x20, 1.27mm pitch, double cols (from Kicad 4.0.7!), script generated Through hole socket strip THT 2x28 1.00mm double row Through hole straight socket strip, 1x13, 2.00mm pitch, double rows Surface mounted socket strip THT 2x28 2.54mm double row Molex LY 20 series connector, DF52-11S-0.8H (https://www.hirose.com/product/en/products/DF52/DF52-3S-0.8H%2821%29/), generated with kicad-footprint-generator Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 5569-12A2, example for new part number: 22-27-2041, 4 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Molex SPOX Connector System, 53048-0310, 3 Pins per row (http://www.molex.com/pdm_docs/sd/530470610_sd.pdf), generated with kicad-footprint-generator Hirose DF13 through hole, DF11-16DP-2DSA, 8 Pins per row (http://www.molex.com/pdm_docs/sd/1053091203_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 48 Pin (JEDEC MO-153 Var AB https://www.jedec.org/document_search?search_api_views_fulltext=MO-194), generated with kicad-footprint-generator JST GH series connector, BM01B-ACHSS-A-GAN-ETF (http://www.jst-mfg.com/product/pdf/eng/eACH.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py HTSSOP, 24 Pin (JEDEC MO-153 Var FD https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator TE, 826576-9, 9 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 Molex Sabre Power Connector, 46007-1102, With thermal vias in pads, 6 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 GH series connector, S15B-XH-A-1 (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-127-02-xxx-DV-BE-LC, 27 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 PH series connector, BM16B-ZESS-TBT (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Hirose DF12C SMD, DF12C3.0-60DS-0.5V, 60 Pins (http://www.molex.com/pdm_docs/sd/5024260810_sd.pdf), generated with kicad-footprint-generator JST PH series connector, B08B-ZESK-1D, with boss (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 2 times 1.5 mm² wires, reinforced insulation, conductor diameter 0.65mm, outer diameter 1mm, size source Multi-Contact FLEXI-xV 2.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Hirose DF12C SMD, DF12C3.0-14DS-0.5V, 14 Pins (http://www.molex.com/pdm_docs/sd/5024301410_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 24 Pin (https://www.nxp.com/docs/en/package-information/98ASA00734D.pdf), generated with kicad-footprint-generator Samtec HLE .100.

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