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V3.2 Stuff all teh scad files in aac0a4a5b4 Notes from MK's PCB livestream Footprints: - avoid non-circular holes in footprints whenever possible; some fabs charge more for ovals avoid non-circular holes in footprints whenever possible; some fabs charge more for ovals 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? SR2511 series are 11.43? Maybe more? Distance between pcb and front panel, horizontal PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3faav1-0 AA Series, 3 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3faah2-0 AA Series, 3 pole male XLR receptacle, grounding: mating connector shell and front panel, horizontal PCB mount, additional ground contacts, https://www.neutrik.com/en/product/nc3mbh-e B Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack (T/TN/R/RN/S), https://www.neutrik.com/en/product/nj5fd-v 6.35mm (1/4 in) Vertical Jack, 3 x 10.1 mm, Time-Lag T, 250 VAC, 125 VDC (https://us.schurter.com/bundles/snceschurter/epim/_ProdPool_/newDS/en/typ_UMT_250.pdf Surface Mount Double Row 2.54mm (0.1 inch) Pitch PCB Connector, M20-7810645, 6 Pins (https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=826576&DocType=Customer+Drawing&DocLang=English), generated with kicad-footprint-generator ipc_gullwing_generator.py LQFP, 64 Pin (JEDEC MO-241/VAA, https://assets.nexperia.com/documents/package-information/SOT762-1.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WQFN, 24 Pin (https://www.jedec.org/standards-documents/docs/mo-142-d variation AC), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 5, Wuerth electronics 9776050960 (https://katalog.we-online.com/em/datasheet/9776050960.pdf), generated with kicad-footprint-generator connector JST J2100 series connector, S12B-XASK-1.

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