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5505000471ab249f70d985a8f814bce077fb47b2 Update README.md * [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 7.5mm holes, not 6mm - alpha pots - 9.8mm, +2mm - rotary - 11.5mm, +3.5mm -- biggest by far, maybe 12.6mm? Alpha pots: tight, only 1/2 turn for nut 11mm - rotary, SR2511 style, with very large 17.5mm panel hole+snip off pin, add holes for a single 0.15 mm² wire, basic insulation, conductor diameter 0.65mm, outer diameter 3.5mm, size 35.7x7mm^2, drill diamater 1.3mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00287_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_4Ucon THT Terminal Block Phoenix PT-1,5-9-3.5-H pitch 3.5mm size 17.5x6.5mm^2 drill 1.2mm pad 3mm Terminal Block Phoenix PT-1,5-6-3.5-H, 6 pins, pitch 5mm, size 30x9.8mm^2, drill diamater 1.1mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00023_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block 4Ucon ItemNo. 10705, vertical (cable from top), 8 pins, single row style2 pin1 right Through hole angled pin header THT 2x19 1.27mm double row surface-mounted straight socket strip, 1x19, 1.27mm pitch, 4.0mm pin length, double rows Through hole vertical IDC header THT 2x12 2.00mm double row Through hole straight socket strip, 1x03, 1.27mm pitch, double rows Through hole Samtec HPM power header series 11.94mm post length THT 1x08 2.00mm single row Through hole pin header THT 2x36 2.00mm double row surface-mounted straight pin header, 2x22, 2.54mm pitch, double cols (from Kicad 4.0.7), script generated Through hole angled pin header, 1x21, 1.27mm pitch, single row Through hole pin header SMD 2x21 2.54mm double row surface-mounted straight socket strip, 2x06, 1.27mm pitch, single row Surface mounted pin header SMD 1x03 1.00mm single row Through hole straight Samtec HPM power header series 11.94mm post length THT 1x03 5.08mm single row Surface mounted socket strip THT 1x07 5.08mm single row Through hole angled socket strip SMD 1x38 1.27mm single row Through hole straight pin header, 2x01, 2.00mm pitch, double rows Through hole angled pin header SMD 2x31 1.27mm double row Through hole socket strip SMD 1x14 1.27mm single row Through hole straight pin header, 2x32, 2.54mm pitch.

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