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V_wall(h=4, l=height-rail_clearance*2-thickness); // top horizontal rib // h_wall(h=4, l=right_rib_x); // middle horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle-bottom h rib // h_wall(h=1.6, l=right_rib_x); // middle-bottom h rib // h_wall(h=4, l=right_rib_x); // middle horizontal rib h_wall(h=4, l=right_rib_x); // middle-bottom h rib // one more vertical to mount a circuit outside the full 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 EPCOS app note at http://www.cypress.com/file/140006/download DFN, 6 Pin (http://www.nve.com/Downloads/ab3.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 28 Pin (https://pdfserv.maximintegrated.com/package_dwgs/21-0140.PDF (T3255-6)), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 10, Wuerth electronics 9774130360 (https://katalog.we-online.de/em/datasheet/9774130360.pdf), generated with kicad-footprint-generator Connector Phoenix Contact connector footprint for: MCV_1,5/9-GF-5.08; number of pins: 11; pin pitch: 5.08mm; Vertical || order number: 1843334 8A 160V Generic Phoenix Contact connector footprint for: MCV_1,5/6-GF-3.5; number of pins: 02; pin pitch: 3.50mm; Angled || order number: 1843651 8A 160V Generic Phoenix Contact connector footprint for: MSTB_2,5/12-GF; number of pins: 08; pin pitch: 3.81mm; Angled; threaded flange || order number: 1777170 12A || order number: 1924088 16A (HC Generic Phoenix Contact connector footprint for: GMSTB_2,5/6-GF-7,62; number of pins: 15; pin pitch: 3.81mm; 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 (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1836367 8A 320V Generic Phoenix Contact connector footprint for: GMSTBVA_2,5/10-G-7,62; number of pins: 08; pin pitch: 5.08mm; Angled || order number: 1843839 8A 160V Generic Phoenix Contact connector footprint for: MSTBA_2,5/10-G; number of pins: 03; 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 2.2x6.5 C or ISO 7049-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1923814 16A (HC Generic Phoenix Contact connector footprint for: MC_1,5/9-GF-3.5; number of pins: 03; pin pitch: 5.08mm; Angled; threaded flange || order number: 1923911 16A (HC Generic Phoenix Contact connector footprint.

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