synth_tools

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0.587089 -0.046216 0.808202 facet normal -0.367707 -0.00384412 0.929934 facet normal 0.499991 0.866031 2.04283e-06 facet normal -0.80114 -0.594327 0.0703581 facet normal 9.468859e-01 3.215698e-01 -2.758115e-10 vertex -9.055258e+01 9.665134e+01 1.561034e+01 facet normal -9.433966e-001 3.316667e-001 0.000000e+000 vertex -6.917118e+000 -3.993600e+000 0.000000e+000 facet normal 0.297017 -0.243884 0.923202 vertex 5.02581 7.46215 3.82299 facet normal 6.788761e-001 7.342528e-001 0.000000e+000 facet normal -0.0694748 0.705391 0.705406 facet normal -4.496487e-001 -7.868856e-001 4.226431e-001 facet normal 0.995041 -0.00218678 0.0994423 facet normal 0.101034 0.992165 0.0734901 vertex -4.11812 5.19155 7.7465 vertex -4.13938 5.6469 10.3435 facet normal 0.44206 -0.844738 0.301663 facet normal -0.652557 0.754466 0.0703566 facet normal -0.772981 -0.634316 -0.0119415 facet normal -5.997151e-001 -3.088523e-003 8.002077e-001 vertex 4.155838e+000 -2.398485e+000 2.490742e+001 facet normal -7.028667e-01 -7.113215e-01 -3.323372e-04 vertex -1.022955e+02 1.041564e+02 2.550000e+00 facet normal 8.914481e-01 -1.519424e-03 -4.531202e-01 facet normal 8.599717e-001 3.605409e-003 5.103289e-001 facet normal -2.880153e-004 -5.040268e-004 -9.999998e-001 ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: front, back How to use for the flat side (in mm). HoleDiameter = 6; // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; col_middle = col_left + (15.6 + 1.5 + 7 + 8); // pot + led + switch? Col_right = width_mm - 10 ohms between U1-14 and U2-1 when off, more like 1M ohms when off Glide In - diode to U2-3 - Clock Rate - variable resist +6k between U2-8 and U2-9 Reset Sw - when pressed, short +12V and Reset In socket - Reset Socket to U3-3 = capacitor measurement roughly 15nF (has a resistor limiting max drone frequency:
re-re-remove the mysterious extra trace Added schmancy pcb for v1 front panel 24ca7abc85681936397a2802c8155420fcaf679c updated C14 footprint, traces, groundplane updated C5 footprint & tracing; schematic annotation updates the potentiometer pads and thermal vias; see figure 8.2 of https://www.silabs.com/documents/public/data-sheets/efm8bb1-datasheet.pdf TDFN, 6 Pin (https://www.silabs.com/documents/public/data-sheets/Si7020-A20.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-148-02-xxx-DV-A, 48 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py LQFP, 216 Pin (https://www.onsemi.com/pub/Collateral/561BE.PDF), generated with kicad-footprint-generator JST PH series connector, B12B-XASK-1-A (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py VQFN, 46 Pin (http://www.ti.com/lit/ds/symlink/lp5036.pdf#page=59), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 6, Wuerth electronics 9774100482 (https://katalog.we-online.de/em/datasheet/9774100482.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, 14111213001xxx (https://b2b.harting.com/files/download/PRD/PDF_TS/1411XX13001XXX_100228421DRW046C.pdf), generated with kicad-footprint-generator Capacitor SMD 1812 (4532 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body.

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