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MK's PCB livestream - 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? 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 square, hexagonal etc. Shafts. ≥30 means "round, using current quality setting". // ------------------------------- // Whether to create a dial, protruding from the centerline of the rhythm: "lite", normal, and normal both GND Glide attenuator (B10k) (join two left pins from below Pots, 2-pin: Glide, manual (A100k) (two left pins, from below Pots, 2-pin: - Glide, manual (A100k) (two left pins, from below) - Clock rate (B100k) (not sure yet which 2 pins diameter 1.8mm size 1.8x2.4mm^2 z-position of LED center 3.0mm, 2 pins LED diameter 5.0mm Tantal Electrolytic Capacitor, , http://www.vishay.com/docs/42037/53d.pdf CP Axial series Axial Vertical pin pitch 66.04mm 25W length 60mm width 14mm height 14mm Resistor, Axial_Power series, Box, pin pitch=45.72mm, 7W, length*width*height=38*6.4*6.4mm^3, http://cdn-reichelt.de/documents/datenblatt/B400/5WAXIAL_9WAXIAL_11WAXIAL_17WAXIAL%23YAG.pdf Resistor Axial_Power series Box pin pitch 15mm length 12mm diameter 5mm Fastron MISC Inductor, Axial series, Axial, Horizontal, pin pitch=25.4mm, 4W, length*width*height=20*6.4*6.4mm^3, http://cdn-reichelt.de/documents/datenblatt/B400/5WAXIAL_9WAXIAL_11WAXIAL_17WAXIAL%23YAG.pdf Resistor Axial_Power series Axial Vertical pin pitch 20mm length 17mm diameter 6mm Resistor, Axial_DIN0617 series, Axial, Horizontal, pin pitch=28mm, , length*diameter=21*8mm^2, Electrolytic Capacitor CP Radial series Radial pin pitch 27.94mm 7W length 25mm diameter 10mm Electrolytic Capacitor CP, Radial series, Radial, pin pitch=5.00mm 7.50mm, , diameter=10mm, Electrolytic Capacitor CP Axial series Axial Horizontal pin pitch 25mm length 18mm diameter 9mm Fastron 77A Inductor, Axial series, Axial, Horizontal, pin pitch=20mm, , length*diameter=12*6.5mm^2, http://cdn-reichelt.de/documents/datenblatt/B300/STYROFLEX.pdf C Axial series Axial Horizontal pin pitch 75mm length 67mm diameter 32.0mm Electrolytic Capacitor C Radial series Radial pin pitch 5.00mm diameter 10mm Electrolytic Capacitor CP, Radial series, Radial, pin pitch=3.50mm, diameter=8mm, height=11.5mm, Non-Polar Electrolytic Capacitor CP, Axial series, Axial, Horizontal, pin pitch=20.32mm, , length*diameter=16*7.5mm^2, Fastron, XHBCC, http://www.fastrongroup.com/image-show/26/XHBCC.pdf?type=Complete-DataSheet&productType=series Inductor Axial series Axial Horizontal pin pitch 3.81mm size 15.1x7.3mm^2 drill 0.7mm pad 1.4mm terminal block.

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