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Straightforward build: one op-amp, four transistors and some example modules Latest commits for file HIHAT_MANUAL.pdf Add MK manuals Add MK manuals 2bd01a1ff2d30ca3cff647bbf3b80645437cc07c Add schematic, start on PCB with exploratory 8hp layout 0d370a24cdcaf6d3fd7f0316855522b79df0fe9a 3583986e89 Finished PCB, passes all passable DRCs Show-stopping bugs needing bodges: Errant connection between R25 and R1. This needs to be under a Creative Commons Legal Code CC0 1.0 Universal CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent owner(s) (each and all, an "owner") of an original work of authorship, including the original version of bornier4 simple 5-pin terminal block, pitch 5.08mm, size 45.7x11.2mm^2, drill diamater 1.3mm, pad diameter 2.4mm, outer diameter 1mm, size source Multi-Contact FLEXI-E 0.15 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 54722-0504, 50 Pins (http://www.molex.com/pdm_docs/sd/529910308_sd.pdf), generated with kicad-footprint-generator Molex Pico-EZmate series connector, BM12B-SRSS-TB (http://www.jst-mfg.com/product/pdf/eng/eSH.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 4 times 1 mm² wires, basic insulation, conductor diameter 0.65mm, outer diameter 2.1mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00045_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00082 vertical pitch 3.5mm size.

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