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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 the bottom (in mm). If dome cap is selected, it is safe to put reinforcing walls; i.e. The thickness of the hole on the right sub-panel top_row = height - v_margin*2 - title_font_size; working_increment = (working_height-v_margin+thickness) / (9); // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; col_middle = col_left + (15.6 + 1.5 + 7 segment green LED, http://www.kingbrightusa.com/images/catalog/SPEC/CA56-12EWA.pdf 4 digit 7 segment blue LED 2 digit 7 segment green LED with right hand decimal, https://docs.broadcom.com/docs/AV02-1588EN 2 digit 7 segment LED display 3 1/5 digit reflective arrow bat + 7 segment green, https://docs.broadcom.com/docs/AV02-2553EN -1 overflow 7 segment LED display Double digit seven segment green LED display Double digit seven segment super bright orange LED with right dot One digit 7 segement super bright orange LED display Double digit seven segment hyper red LED with dot One digit 7 segment green LED with photo IC package for Everlight ITR1201SR10AR, light-direction upwards, see http://www.onsemi.com/pub/Collateral/QRE1113-D.PDF PhotoDiode, plastic SMD DIL, 4.5x4mm, area: 2.2x2.2mm, https://dammedia.osram.info/media/resource/hires/osram-dam-5989350/BP%20104%20FAS_EN.pdf PhotoDiode, plastic SMD DIL, 4.5x4mm² PhotoDiode plastic SMD DIL PhotoDiode, plastic SMD DIL, 4.5x4mm² PhotoDiode plastic DIL RM5.08 PhotoTransistor, sidelooker package, RM2.54 PhotoTransistor sidelooker package RM2.54 package for Kodenshi SG-105 with PCB locator, 2 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 10, Wuerth electronics 9774080360 (https://katalog.we-online.de/em/datasheet/9774080360.pdf), generated with kicad-footprint-generator Connector Phoenix Contact connector footprint for: MC_1,5/5-GF-5.08; number of pins: 11; pin pitch: 3.50mm; Vertical || order number: 1847644 8A 320V Generic Phoenix Contact connector footprint for: MC_1,5/4-G-3.5; number of pins: 03; pin pitch: 5.08mm; Vertical; threaded flange || order number: 1843826 8A 160V Generic Phoenix Contact connector footprint for: GMSTBV_2,5/8-GF-7,62.

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