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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 SIP7, http://power.murata.com/data/power/ncl/kdc_nma.pdf Isolated 1W or 2W Single and Dual Output, 1500VDC Isolation, 24.0x13.7x8.0mm https://www.artesyn.com/power/assets/ata_series_ds_01apr2015_79c25814fd.pdf https://www.artesyn.com/power/assets/trn_dc-dc_ata_3w_series_releas1430412818_techref.pdf DCDC-Converter, BOTHHAND, Type CFxxxx-Serie, (Very dodgy url but was the only at hand), DCDC-Converter BOTHHAND Type CFxxxx-Serie DCDC-Converter, CINCON, EC5BExx, 18-36VDC to dual output DCDC-Converter, TRACO, TEN10-xxxx, single output, https://assets.tracopower.com/20171102100522/TEN10/documents/ten10-datasheet.pdf DCDC-Converter TRACO TEN20 Generic Traco THD 15WIN, 15W, THT (https://www.tracopower.com/products/thd15win.pdf#page=3 traco dcdc tht 12w DCDC-Converter, TRACO, TSR 1-xxxx XP_POWER IA48xxD, DIP, (https://www.xppower.com/pdfs/SF_IA.pdf), generated with kicad-footprint-generator JST PUD series connector, B08B-ZESK-1D, with boss (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55932-1210, with PCB locator, 6 Pins (https://www.molex.com/pdm_docs/sd/026605050_sd.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, B2B-EH-A (http://www.jst-mfg.com/product/pdf/eng/eEH.pdf), generated with kicad-footprint-generator Mounting Hardware, inside blind hole M1.6, height 4, Wuerth electronics 9774055951 (https://katalog.we-online.de/em/datasheet/9774055951.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC, 16 Pin (http://cds.linear.com/docs/en/datasheet/37551fd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 64 Pin (https://www.nxp.com/docs/en/package-information/SOT414-1.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py LFCSP-WD, 10 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/00001725D.pdf (Page 9)), generated with kicad-footprint-generator JST ZE series connector, 64801011622 (https://katalog.we-online.com/em/datasheet/6480xx11622.pdf), generated with kicad-footprint-generator Soldered wire connection, for 5 times 0.5 mm² wires, reinforced insulation, conductor diameter 0.65mm, outer diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type175_RT02705HBLC, 5 pins, pitch 2.5mm, size 17.2x10mm^2, drill diamater 1.3mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/2138224.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block WAGO 236-412, 45Degree (cable under 45degree), 12 pins, dual row male, vertical entry, strain relief clip Harwin LTek Connector, 12 pins, pitch 10.2mm, size 35.6x8.3mm^2, drill diamater 1.2mm, pad diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block WAGO 236-204, 45Degree (cable under 45degree), 4 pins, pitch 5mm, size 30x12.6mm^2, drill diamater 1.3mm, pad diameter 3mm, size source Multi-Contact FLEXI-E 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 Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 53748-0408, 40 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-146-02-xx-DV-TE, 46 Pins per row (https://www.molex.com/pdm_docs/sd/022057045_sd.pdf), generated with kicad-footprint-generator Thick Film Chip Resistor Network, ROHM MNR35 (see mnr_g.pdf Precision Thin Film Chip Resistor Array, Wave soldering, Vishay CRA06P (see cra06p.pdf Thick Film Chip Resistor Network, ROHM MNR14 (see mnr_g.pdf Precision Thin Film Chip Resistor Network, ROHM MNR15 (see mnr_g.pdf Chip.

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