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Package (UC) - 3x3x0.5 mm Body [TSSOP] with exposed pad (https://www.infineon.com/cms/en/product/packages/PG-DSO/PG-DSO-20-87/ 12-Lead Plastic Micro Small Outline Narrow Body Body [QSOP] (http://www.allegromicro.com/~/media/Files/Datasheets/ACS726-Datasheet.ashx?la=en Allegro Microsystems 24-Lead Plastic QFN (4mm x 3mm) (see Linear Technology DFN_6_05-08-1703.pdf 6-Lead Plastic Dual Flat, No Lead Package - 10x10x0.9 mm Body [QFN] with thermal vias; see figure 8.2 of https://www.silabs.com/documents/public/data-sheets/efm8bb1-datasheet.pdf TDFN, 6 Pin (http://www.onsemi.com/pub/Collateral/NCP133-D.PDF), generated with kicad-footprint-generator Molex Nano-Fit Power Connectors, old mpn/engineering number: 5566-04A2, example for new part number: A-41791-0008 example for new part number: A-41791-0012 example for new mpn: 39-28-x06x, 3 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 connector wire 2.5sqmm strain-relief Soldered wire connection with double feed through strain relief, for 6 times 2.5 mm² wires, reinforced insulation, conductor diameter 1.7mm, outer diameter 3.6mm, size source Multi-Contact FLEXI-xV 0.75 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator JST SUR series connector, B30B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 48 Pin (http://infocenter.nordicsemi.com/pdf/nRF51822_PS_v3.3.pdf#page=67), generated with kicad-footprint-generator Molex Mini-Fit Sr. Power Connectors, 105314-xx16, 8 Pins (http://www.molex.com/pdm_docs/sd/908140004_sd.pdf), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for a single 0.25 mm² wires, reinforced insulation, conductor diameter 1.7mm, outer diameter 3.5mm, size source Multi-Contact FLEXI-xV 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times 0.25 mm² wires, basic insulation, conductor diameter 1.7mm, outer diameter 1mm, size source Multi-Contact FLEXI-E 0.75 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times 0.15 mm² wires, basic insulation, conductor diameter 2.4mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-E 0.15 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, * Knurl polyhedron depth, * Cylinder ends smoothed height, * Knurled cylinder height, * Knurled surface smoothing amount ); } module cherry_mx_button() { union(){ cube([14,14,thickness]); // u[nits] function units_mm(u) = u * U; main synth_tools/PCB Notes.txt 17 lines Notes from MK's PCB livestream - 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 ## GitHub repository https://github.com/holmesrichards/precadsr Submodules Latest commits for file Docs/precadsr_bom.md abc39a50d6 Delete '3D Printing/Panels/MAGIC MISSILE VCF.png | Bin 0 -> 12821 bytes .../COLOR SPRAY.png | Bin 0 -> 292681 bytes rename LUTHERS_VCO.diy => Schematics/LUTHERS_VCO.diy | 0 3D Printing/Rails/18hp_innie.stl | Bin 0 -> 509084 bytes // PCB holder main MK_VCO/Panels/Font files/futura medium bt.ttf // 13 SPDT switches (many used as SPST 2 momentary pushbutton switches 1 rotary switch - this needs a _big_ knob, these are actually.

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