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The multipliers here, tweak the variables themselves v_wall(h=4, l=height-rail_clearance*2-thickness); // top horizontal rib // h_wall(h=4, l=right_rib_x); // middle-bottom h rib // h_wall(h=4, l=right_rib_x); // one more 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 93 (https://www.catagle.com/45-2/PDF_AN93.htm Bourns TBU-CA Fuse, 2 Pin fuse holder, car blade fuse mini, http://www.keyelco.com/product-pdf.cfm?p=306 Fuseholder, 5x20, closed, vertical, Bulgin, FX0456, https://www.bulgin.com/products/pub/media/bulgin/data/Fuseholders.pdf Fuseholder 5x20 closed vertical Bulgin FX0456 Sicherungshalter Fuseholder, 5x20, closed, horizontal, Bulgin, FX0457, Sicherungshalter, Fuseholder 5x20 closed horizontal Bulgin FX0457 Sicherungshalter PCB fuse holders for 5 times 0.25 mm² wires, reinforced insulation, conductor diameter 1.7mm, outer diameter 3.5mm, size 43x8.3mm^2, drill diamater 1.1mm, pad diameter 2.7mm, size source Multi-Contact FLEXI-E 0.15 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times 0.5 mm² wire, basic insulation, conductor diameter 1.25mm, outer diameter 1.7mm, size source Multi-Contact FLEXI-xV 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator connector wire 0.1sqmm strain-relief Soldered wire connection with feed through strain relief, for 2 times 1 mm² wires, reinforced insulation, conductor diameter 1.25mm, outer diameter 3.9mm, 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 0.25 mm² wire, basic insulation, conductor diameter 2.4mm, see http://www.4uconnector.com/online/object/4udrawing/10689.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00297, 12 pins, pitch 2.5mm, size 13x5mm^2, drill diamater 1.2mm, pad diameter 2.1mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00045_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block connector http://www.phoenixcontact.com/us/products/1778706/pdf PhoenixContact PTSM0,5 2 HV 2,5mm vertical SMD spring clamp terminal block RND 205-00290, 5 pins, pitch 7.5mm, size 15x11mm^2, drill diamater 1.3mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/100425.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type205_RT04503UBLC, 45Degree (cable under 45degree), 12 pins, pitch 10mm, size 105x9mm^2, drill diamater 1.2mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/100425.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block 4Ucon ItemNo. 10694, vertical (cable from top), 9 pins, pitch 3.5mm, size 50x8.3mm^2, drill diamater 1.3mm, pad diameter 2.1mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00045_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block 4Ucon ItemNo. 10702, vertical (cable from top), 15 pins, pitch 10mm, size 35x8.1mm^2, drill diamater 1.3mm, pad diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block WAGO 236-404, 45Degree (cable under 45degree), 1 pins, pitch 5.08mm, size 20.3x10.6mm^2, drill diamater 1.3mm, pad diameter 3mm, see http://www.metz-connect.com/de/system/files/METZ_CONNECT_U_Contact_Katalog_Anschlusssysteme_fuer_Leiterplatten_DE_31_07_2017_OFF_024803.pdf?language=en page 134, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00234 pitch 5.08mm size 45.7x10.6mm^2 drill 1.3mm pad 2.6mm Terminal Block WAGO 804-305 45Degree pitch.

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