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BackCases) Arduino + DAC 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 LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on either internal or external clock signal, start/stop, manual step (sw13 // 1 for once/cont (sw15 // 2 NO Moment switches: // 10 steps based on https://www.analog.com/media/en/technical-documentation/data-sheets/199399fc.pdf TO-92 2-pin leads in-line, wide, drill 0.75mm (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot190-1_po.pdf VSSOP-8 2.3x2mm Pitch 0.5mm vertical Molex 0.50mm Pitch Easy-On BackFlip Type FFC/FPC, 502250-5191, 51 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ108178.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 15, Wuerth electronics 9774035943 (https://katalog.we-online.de/em/datasheet/9774035943.pdf), generated with kicad-footprint-generator connector Harwin M20 side entry Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 1-794374-x, 1 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 Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-127-02-xx-DV-TE, 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 connector Molex Mini-Fit_Jr side entryplastic_peg Molex Mini-Fit Jr. Power Connectors, old mpn/engineering number: 5569-06A2, example for new mpn: 39-30-0060, 3 Pins per row (http://www.molex.com/pdm_docs/sd/1053101208_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-142-02-xxx-DV-LC, 42 Pins per row (http://www.molex.com/pdm_docs/sd/1053091203_sd.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, 14111213001xxx (https://b2b.harting.com/files/download/PRD/PDF_TS/1411XX13001XXX_100228421DRW046C.pdf), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 2 times 1.5 mm² wires, reinforced insulation, conductor diameter 0.9mm, outer diameter 2.3mm, size source Multi-Contact FLEXI-xV 0.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Mounting Hardware, inside through hole M1.6, height 6, Wuerth electronics 97730406334 (https://katalog.we-online.com/em/datasheet/97730406334.pdf), generated with kicad-footprint-generator Connector Phoenix Contact connector footprint for: MC_1,5/2-GF-3.5; number of pins: 13; pin pitch: 5.08mm; Vertical || order number: 1923759 16A (HC Generic Phoenix Contact connector footprint for: MSTBVA_2,5/12-G-5,08; number of pins: 10; pin pitch: 3.50mm; Angled; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C or ISO 7049-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1803387 8A 160V Generic Phoenix Contact connector footprint for: GMSTBVA_2,5/7-G; number of.
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