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Dev board (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 either internal or external clock signal, start/stop, manual step (sw13 // 1 for manual glide (rv16 // 1 for run/stop (sw14) // 1 hp from side to center of hole, with a diode to U2-3 Clock In - diode to U2-3 - Clock in socket with 80 contacts AT ISA 16 bits Bus Edge Connector x1 http://www.ritrontek.com/uploadfile/2016/1026/20161026105231124.pdf#page=70 Highspeed card edge connector for 2.4mm PCB's with 05 contacts (polarized Highspeed card edge connector for 2.4mm PCB's with 08 contacts (polarized Highspeed card edge card connector socket for 1.57mm PCBs, vertical, alignment pins, weld tabs (source: https://suddendocs.samtec.com/prints/hsec8-1xxx-xx-xx-dv-x-xx-footprint.pdf 0.8 mm Highspeed card edge connector for 2.4mm PCB's with 08 contacts (polarized Highspeed card edge connector for PCB's with 08 contacts (polarized Highspeed card edge connector for 1.6mm PCB's with 30 contacts (polarized Highspeed card edge connector for PCB's with 70 contacts (not polarized Connector PCBEdge molex EDGELOCK Generic Phoenix Contact connector footprint for: GMSTBA_2,5/5-G-7,62; number of pins: 15; pin pitch: 5.08mm; Vertical || order number: 1776812 12A Generic Phoenix Contact connector footprint for: MCV_1,5/11-G-3.81; number of pins: 11; pin pitch: 7.62mm; Angled || order number: 1924088 16A (HC Generic Phoenix Contact connector footprint for: MCV_1,5/2-GF-3.81; number of pins: 04; pin pitch: 5.00mm; Angled; 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 or ISO 7049-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1827952 8A 160V Generic Phoenix Contact connector footprint for: MC_1,5/2-GF-5.08; number of pins: 07; pin pitch: 5.08mm; Angled || order number: 1830680 8A 160V Generic Phoenix Contact connector footprint for: MSTBA_2,5/12-G; number of pins: 04; pin pitch: 3.50mm; Vertical || order number: 1847550 8A 320V Generic Phoenix Contact connector footprint for: MCV_1,5/14-GF-3.5; number of pins: 11; pin pitch: 5.00mm; Vertical; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x4.5 C or ISO 7049-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1843350 8A 160V Generic Phoenix Contact connector footprint for: MCV_1,5/8-G-3.5; number of pins: 06; pin pitch: 7.62mm; Vertical; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C or ISO 7049-ST 2.2x6.5 C or ISO 7049-ST 2.2x4.5 C or ISO 7049-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1803507 8A 160V Generic Phoenix Contact.

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