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KiCad. To clone: submodules 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 ## Git repository https://gitlab.com/rsholmes/precadsr Submodules From 83b013c3637bfb179ad62b90a6c8b2f5fb547c8c Mon Sep 17 00:00:00 2001 Subject: [PATCH] Footprint selection, some PCB layout choices 4d8e233e93 Add CV (and knob) controlled glide to schematic Add pulldown resistors for reset debounce cap; formatting Add pulldown resistors for reset debounce cap; formatting Add pulldown resistors for reset debounce cap; formatting Add pulldown resistors for reset debounce cap; formatting checkpoint before getting really weird with WireIt dd8c61c34f A couple more minor clearance tweaks Subject: [PATCH 02/13] More notes 812d609d12a788e600a582b2b6e7494f6d2b0728 More mounting hole 3.2mm no annular Mounting Hole 2.7mm, no annular, M5 mounting hole 4.3mm m4 iso14580 Mounting Hole 4.3mm, M4, DIN965 mounting hole 2.7mm no annular mounting hole 5.3mm no annular m3 Mounting Hole 6.4mm, no annular, M5, ISO14580 mounting hole 5.3mm no annular mounting hole 2.7mm no annular m4 din965 Mounting Hole 4.3x6.2mm, M4 mounting hole 2.2mm no annular m2 Mounting Hole 5.3mm, M5, ISO14580 mounting hole 2.7mm m2.5 iso14580 Mounting Hole 4.3x6.2mm, M4 mounting screws (https://www.vishay.com/docs/95423/sot227g2.pdf, https://www.vishay.com/docs/95793/vs-fc420sa10.pdf TR TO-3 TO3 TO-204 TO-3P-3, Horizontal, RM 2.54mm, staggered type-2 TO-220-9, Vertical, RM 0.97mm, Multiwatt-9, staggered type-2 TO-220-7 Horizontal RM 2.54mm TO-220-4, Horizontal, RM 1.7mm, PentawattF-, MultiwattF-5 TO-220F-5 Vertical RM 1.27mm Multiwatt-7 staggered type-2 TO-220-11, Horizontal, RM 1.7mm, staggered type-1, see http://www.st.com/resource/en/datasheet/l298.pdf TO-220-15 Horizontal RM 2.54mm TO-220F-5, Horizontal, RM 2.54mm, see https://www.vishay.com/docs/66542/to-220-1.pdf TO-220-3 Horizontal RM 2.54mm TO-220-3, Vertical, RM 2.54mm, see https://www.diodes.com/assets/Package-Files/TO126.pdf TO-126-3 Vertical RM 2.29mm IPAK TO-251-3, Vertical, RM 2.54mm, staggered type-1, see http://www.st.com/resource/en/datasheet/tda7391lv.pdf TO-220-11 Vertical RM 1.7mm MultiwattF-11 staggered type-1 TO-220F-15, Vertical, RM 0.97mm, Multiwatt-9, staggered type-2 TO-220F-4, Vertical, RM 10.9mm, see https://www.fairchildsemi.com/package-drawings/TO/TO264A03.pdf TO-264-2 Vertical RM 1.27mm MultiwattF-15 staggered type-1 TO-220-9 Vertical RM 1.27mm staggered type-1 TO-220F-2, Horizontal, RM 1.7mm, Pentawatt, Multiwatt-5, staggered type-2, see http://www.st.com/resource/en/datasheet/tda7391lv.pdf TO-220-11 Horizontal RM 2.29mm IPAK TO-251-3, Horizontal, RM 10.9mm, see https://toshiba.semicon-storage.com/us/product/mosfet/to-247-4l.html TO-247-4 Vertical RM 1.7mm staggered type-2 TO-220-4 Horizontal RM 2.54mm TO-247-4, Vertical, RM 1.27mm, staggered type-2, see http://www.st.com/resource/en/datasheet/l298.pdf TO-220-15 Vertical RM 1.7mm Pentawatt Multiwatt-5 staggered type-2 TO-220-9, Horizontal, RM 5.45mm, , see https://toshiba.semicon-storage.com/ap-en/design-support/package/detail.TO-3P(N).html TO-3P-3 Horizontal RM 2.29mm IPAK TO-262-3, Horizontal, RM 1.7mm, staggered.

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