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(in some cases) 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 EPCOS app note at http://www.cypress.com/file/140006/download DFN, 6 Pin (http://www.ti.com/lit/ds/symlink/tps61040.pdf#page=35), generated with kicad-footprint-generator connector JST AUH series connector, 502386-0770 (http://www.molex.com/pdm_docs/sd/5023860270_sd.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 5/6-H-7.5-ZB 1719231 Connector Phoenix Contact connector footprint for: MCV_1,5/12-G-3.5; number of pins: 07; pin pitch: 5.08mm; Vertical; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x4.5 C or ISO 7049-ST 2.2x4.5 C or ISO 7049-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1755529 12A || order number: 1844359 8A 160V Generic Phoenix Contact SPT 1.5/9-H-3.5 Terminal Block, 1732564 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1732564), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-145-02-xxx-DV-BE, 45 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 Soldered wire connection with double feed through strain relief, for 6 times 1.5 mm² wires, basic insulation, conductor diameter 2.4mm, see http://www.4uconnector.com/online/object/4udrawing/19965.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix PTSM-0,5-3-2.5-V-THR, vertical (cable from top), 15 pins, pitch 10mm, size 115x10.3mm^2, drill diamater 1.3mm, pad diameter 3mm, see , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00055 pitch 5mm size 11.5x15mm^2 drill 1.2mm pad 2.4mm Terminal Block WAGO 804-109, 45Degree (cable under 45degree), 4 pins, pitch 3.5mm, size 36x8.3mm^2, drill diamater 1.1mm, pad diameter 2.3mm, size source Multi-Contact FLEXI-E 0.1 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-146-02-xxx-DV-BE-LC, 46 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 Mounting Hardware, inside through hole 4.5mm, height 6, Wuerth electronics 9775086360 (https://katalog.we-online.com/em/datasheet/9775086360.pdf), generated with kicad-footprint-generator ipc_plcc_jLead_generator.py PLCC, 44 pins, single row style1 pin1 left Surface mounted socket strip SMD 1x17 1.00mm single row Through hole angled pin header SMD 1x12 2.54mm single row Through hole angled pin header, 2x18, 1.27mm pitch, double cols.

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