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Format. * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to use for the arrow's shaft size. Engraved_indicator_shaft_scale = 1.5; set_screw_depth = 9; // mm from very top/bottom edge and where it is safe to put reinforcing walls; i.e. The thickness of the arrow indicator code to be possible without disassembly of the entire pot. State Gates (from Befaco) TBD, needs testing; but if LEDs are possible, this should be the same as Littelfuse_Package_H_XN2MM, https://www.infineon.com/dgdl/Infineon-FS75R07N2E4-DS-v02_00-en_de.pdf?fileId=db3a30432f5008fe012f52f916333979 35-lead TH, EasyPIM 1B, https://www.infineon.com/dgdl/Infineon-FP10R06W1E3-DS-v02_01-en_de.pdf?fileId=db3a304412b407950112b43312285a63 brifge rectifier igbt diode module 35-lead TH, ACEPACK 2 CIB, PressFIT, https://www.st.com/resource/en/datasheet/a2c50s65m2-f.pdf 25-lead TH, SDIP-25L, https://www.st.com/resource/en/datasheet/stgips20k60.pdf Valve ECC-83-1 round pins Valve ECC-83-2 flat pins Mini-Pentode, 5-pin, e.g. JAN6418 Valve Mini-Pentode 5-pin JAN6418 Varistor, diameter 12mm, width 4.7mm, pitch 7.5mm Varistor, diameter 9mm, width 3.3mm, pitch 5mm size 20x10.5mm^2 drill 1.4mm pad 2.7mm terminal block RND 205-00069, 4 pins, pitch 5mm, size 182x14mm^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 Phoenix PTSM-0,5-7-2.5-V-THR, vertical (cable from top), 14 pins, single row Through hole angled socket strip, 2x15, 1.27mm pitch, double rows Surface mounted socket strip THT 1x32 2.00mm single row Through hole angled pin header SMD 2x34 1.00mm double row Through hole angled pin header, 2x14, 2.54mm pitch, 8.51mm socket length, double rows Through hole horizontal IDC box header, 2x20, 2.00mm pitch, double cols (from Kicad 4.0.7), script generated Through hole angled pin header, 2x28, 1.00mm pitch, single row male, vertical entry, no latches, PN:G125-MVX3405L0X Harwin Gecko Connector, 12 pins, pitch 10mm, size 15.8x8.2mm^2, drill diamater 1.2mm, pad diameter 3mm, see , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix MPT-0,5-5-2.54 pitch 2.54mm size 15.7x6.5mm^2 drill 1.1mm pad 2.1mm Terminal Block Phoenix MKDS-3-14-5.08 pitch 5.08mm size 61x11.2mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00297, 12 pins, pitch 7.5mm, size.

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