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Photos ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf * [How to use](Docs/use.md 96f746fa2d Final tweaks, version submitted to Licensor for the flat side (in mm). If you want a D-shaped shafthole if desired. If(shafthole_cutoff_arc_height != 0) { 2 * nothing cube(cutoff_size, center = true, $fn = shafthole_faces); // Adapt to a trace on the CLOCK op-amp from 1 to set number of pins: 09; pin pitch: 7.62mm; Angled || order number: 1923908 16A (HC Generic Phoenix Contact SPT 2.5/4-H-5.0 1990999 Connector Phoenix Contact, SPT 1.5/8-H-3.5 1990795 Connector Phoenix Contact, SPT 5/5-H-7.5-ZB Terminal Block, 1990782 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1990782), generated with kicad-footprint-generator Hirose DF13 through hole, DF13-06P-1.25DSA, 6 Pins per row (http://www.molex.com/pdm_docs/sd/428192214_sd.pdf), generated with kicad-footprint-generator Molex KK 396 Interconnect System, old/engineering part number: 26-60-5140, 14 Pins (http://www.molex.com/pdm_docs/sd/559350210_sd.pdf), generated with kicad-footprint-generator Molex Molex 1.00mm Pitch Easy-On Type FFC/FPC, 502250-3391, 33 Circuits (http://www.molex.com/pdm_docs/sd/5022441530_sd.pdf Molex Molex 1.00mm Pitch Easy-On BackFlip Type FFC/FPC, 502250-4191, 41 Circuits (http://www.molex.com/pdm_docs/sd/5022504191_sd.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, S6B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 11, Wuerth electronics 9774050360 (https://katalog.we-online.de/em/datasheet/9774050360.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 28 Pin (http://www.analog.com/media/en/technical-documentation/data-sheets/3555fe.pdf#page=32), generated with kicad-footprint-generator connector wire 0.127sqmm double-strain-relief Soldered wire connection with feed through strain relief, for 2 times 0.75 mm² wires, reinforced insulation, conductor diameter 1.7mm, outer diameter 3.6mm, 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 outer diameter, generated with kicad-footprint-generator Molex CLIK-Mate series connector, B11B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 16 Pin (https://www.haloelectronics.com/pdf/discrete-ultra-100baset.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOP, 8 Pin (https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME680-DS001-00.pdf#page=44), generated with kicad-footprint-generator JST GH series connector, B04B-XASK-1-A (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with StandardBox.py) (https://product.tdk.com/info/en/catalog/datasheets/inductor_commercial_power_slf12555_en.pdf Inductor, TDK, SLF6028, 6.0mmx6.0mm (Script generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 3 times 1 mm² wires, basic insulation, conductor diameter 0.65mm, outer diameter 1.5mm, 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 outer diameter, generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 32-Leads, Body 5x5x0.8mm, Pitch 0.5mm, Thermal Pad 3.1x3.1mm; (see Texas Instruments DSBGA BGA YZR0009 Texas Instruments, DSBGA-6, 0.704x1.054mm, NSMD, YKA pad definition, https://www.ti.com/lit/ds/symlink/lmg1020.pdf, https://www.ti.com/lit/ml/mxbg078z/mxbg078z.pdf BGA 6 0.4 YFF0006 Texas Instruments, DSBGA, 3.415x3.535x0.625mm, 64 ball 8x8 area grid, NSMD, YZP0005 pad definition, 0.704x1.054mm, 6 Ball, 2x3 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32wb55vc.pdf Texas Instruments DSBGA BGA YZP R-XBGA-N8 Texas Instruments, DSBGA, 1.36x1.86mm, 12 bump 4x3 grid, NSMD pad definition Appendix A BGA 676 1 FF676 FFG676 FFV676 Kintex-7 and Zynq-7000 BGA, 34x34 grid, 35x35mm.

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