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BackCorrected_silkscreen updated README.md 83b013c3637bfb179ad62b90a6c8b2f5fb547c8c Update README.md * [Schematic](Docs/precadsr.pdf) * 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 Images/PXL_20210831_000949090.jpg 2cb8e5eaf6 Go to file b11a8d3187 Change transistor footprint to inline_wide, fix DRC ground plane on only one side to center of package, Thorlabs photodiodes TO-46-3, Pin2 at center of package, Thorlabs photodiodes, https://www.thorlabs.de/drawings/374b6862eb3b5a04-9360B5F6-5056-2306-D912111C06C3F830/FDGA05-SpecSheet.pdf TO-92 leads molded, narrow, drill 0.75mm (https://www.diodes.com/assets/Package-Files/TO92S%20(Type%20B).pdf TO-92S package, drill 0.6mm (https://media.digikey.com/pdf/Data%20Sheets/Infineon%20PDFs/KT,KTY.pdf TO-92S package, drill 0.75mm (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot556-1_po.pdf 24-Lead Plastic QFN (4mm x 4mm); Pitch 0.5mm; EP 2.7x2.6mm; for InvenSense motion sensors; Mask removed below exposed pad; keepout area marked (Package see: https://store.invensense.com/datasheets/invensense/MPU9250REV1.0.pdf; See also https://www.invensense.com/wp-content/uploads/2015/02/InvenSense-MEMS-Handling.pdf 24-Lead Plastic QFN (2mm x 2mm), http://ams.com/eng/content/download/950231/2267959/483138 DD Package; 8-Lead Plastic Small Outline (SS)-5.30 mm Body [SSOP] (see Microchip Packaging Specification 00000049BS.pdf UQFN, 20 Pin (https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/lfcspcp/cp-20/CP_20_8.pdf), generated with kicad-footprint-generator Molex Sabre Power Connector, 43160-0103, 3 Pins per row (http://www.molex.com/pdm_docs/sd/431602102_sd.pdf), generated with kicad-footprint-generator Molex LY 20 series connector, SM04B-ZESS-TB (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Hirose FH12, FFC/FPC connector, FH12-32S-0.5SH, 32 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_noLead_generator.py QFN, 64 Pin (https://www.silabs.com/documents/public/data-sheets/Si5345-44-42-D-DataSheet.pdf#page=51), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 52991-0608, 60 Pins (http://www.molex.com/pdm_docs/sd/5024260810_sd.pdf), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, 42820-42XX, With thermal vias in pads, 4 Pins per row, Mounting: Snap-in Plastic Peg PCB Lock (http://www.molex.com/pdm_docs/sd/039300020_sd.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 4 times 2 mm² wires, reinforced insulation, conductor diameter 0.65mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-E 1.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer.
- 0.219559 -0.16633 0.961316 facet normal -9.777785e-001.
- (https://assets.nexperia.com/documents/data-sheet/74HC_HCT165.pdf#page=14), generated with kicad-footprint-generator JST.
- Http://www.4uconnector.com/online/object/4udrawing/20193.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_4Ucon THT.