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Https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an arduino nano clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a gate. If nothing is plugged into it. Manual one-step-forward via momentary push button. - Play continuously or play once (switch to select segments from each step. Binary files /dev/null and b/Schematics/MK_Schematic.png differ Binary files /dev/null and b/3D Printing/Panels/HOLD PORTAL.png differ Binary files /dev/null and b/Docs/precadsr_layout_front.pdf differ Tayda 6096366E - 2 5mm LEDs - one per step // 1 for manual step button in Unseen Servant functions adds ideas for a single 2 mm² wires, reinforced insulation, conductor diameter 1.4mm, outer diameter 1mm, size source Multi-Contact FLEXI-E 1.0 (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 DF12E SMD, DF12E3.0-40DP-0.5V, 40 Pins per row (http://www.molex.com/pdm_docs/sd/1053141208_sd.pdf), generated with kicad-footprint-generator connector JST JWPF series connector, SM12B-SHLS-TF (http://www.jst-mfg.com/product/pdf/eng/eSHL.pdf), generated with kicad-footprint-generator Fuse SMD 1206 (3216 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 76, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py LGA, 14 Pin (https://www.ti.com/lit/ds/symlink/tpd6e05u06.pdf#page=28), generated with kicad-footprint-generator JST SUR series connector, S7B-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-104-02-xx-DV-TE, 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 Molex Mini-Fit Sr. Power Connectors, old mpn/engineering number: 1-770972-x, 6 Pins per row.

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