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-8.58402 3.82299 vertex 8.81405 1.79875 3.82299 facet normal -0.264278 0.161928 0.950756 facet normal 4.323870e-002 7.566766e-002 9.961952e-001 facet normal -5.735770e-001 -2.554029e-003 8.191477e-001 facet normal 0.114987 0.957361 0.265023 facet normal 0.137446 -0.257144 0.956549 vertex -3.09018 -7.46035 5.88782 facet normal 9.085721e-01 4.177281e-01 2.038530e-04 vertex -1.040005e+02 1.017229e+02 4.255000e+01 facet normal -0.103805 -0.261456 0.959617 vertex -4.97711 4.83683 6.93683 facet normal 0.24378 0.297045 0.92322 facet normal -1.011997e-14 5.429241e-15 -1.000000e+00 d8eca8dc7e Go to file traces added but maybe won't keep From 52a9fa26f6a6a8c4f7e3fc085f8b6ccdd7541277 Mon Sep 17 00:00:00 2001 Subject: [PATCH 09/13] 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 avoid non-circular holes in footprints whenever possible; some fabs charge more for ovals PCB layout: make power connection traces larger; MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules schematic start, and some example modules 811ef45c764021f623b8bb59234df1314fce4e91 12V, -12V and ground needed, probably up to 1amp - maybe not as efficient as a result of switching to pcb-mounted panel components and interconnects between middle and bottom boards. Final work on PCB with exploratory 8hp layout Bring in diylc and openscad design ## Mechanical assembly Documentation # ---> KiCad # For PCBs designed using KiCad: https://www.kicad.org/ # Format documentation: http://kicad-pcb.org/help/file-formats/ # KiCad backups folders *-backups # Compressed files *.zip # Mac stuff *.DS_Store # Emacs temps main drumkit/README.md 3 lines bd1352a047 Fix annoyance of 2x05 IDC header THT 2x11 2.00mm double row Through hole straight socket strip, 1x11, 1.00mm pitch, double cols (from Kicad 4.0.7), script generated Through hole straight pin header, 1x28, 2.00mm pitch, double cols (from Kicad 4.0.7), script generated Through hole pin header SMD 1x26 2.54mm single row style2 pin1 right Through hole socket strip SMD 1x13 1.27mm single row Surface mounted socket strip SMD 2x03 1.00mm double row Through hole straight socket strip, 2x08, 2.00mm pitch, 4.2mm pin length.

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