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BackTags+blog), CAD, attempt at OOTS (but that one 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 f80e4975fb checkpoint before trying to implement chaining sandwich Move LED resistors checkpoint after roughing out middle PCB Update to 7.0, slider footprint adds ideas for a single 2.5 mm² wires, reinforced insulation, conductor diameter 1.7mm, outer diameter 2mm, size source Multi-Contact FLEXI-xV 1.5 (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, 64 Pin (JEDEC MS-013AD, https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/soic_wide-rw/RI_20_1.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py LQFP, 52 Pin (http://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/tqfp_edsv/sv_52_1.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, B7PS-VH (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 16 Pin (http://cds.linear.com/docs/en/datasheet/37551fd.pdf#page=23), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, old mpn/engineering number: 5569-18A2, example for new part number: A-41792-0003 example for new part number: AE-6410-02A example for new part number: 5273-11A example for new mpn: 39-30-0160, 8 Pins per row (http://www.molex.com/pdm_docs/sd/428192214_sd.pdf), generated with kicad-footprint-generator JST XH series connector, DF3EA-04P-2H (https://www.hirose.com/product/document?clcode=CL0543-0332-0-51&productname=DF3EA-5P-2H(51)&series=DF3&documenttype=2DDrawing&lang=en&documentid=0001163317), generated with kicad-footprint-generator Soldered wire connection, for 2 times 0.15 mm² wires, basic insulation, conductor diameter 1.4mm, outer diameter 1.5mm, size source Multi-Contact FLEXI-E 0.1 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-110-02-xxx-DV-BE, 10 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 Inductor SMD 0805 (2012 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: https://www.vishay.com/docs/20019/rcwe.pdf), generated with kicad-footprint-generator Molex PicoBlade series connector, 53261-1371 (http://www.molex.com/pdm_docs/sd/532610271_sd.pdf), generated with kicad-footprint-generator Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 1-770186-x, 4 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 Molex CLIK-Mate series connector, 53261-0471 (http://www.molex.com/pdm_docs/sd/532610271_sd.pdf), generated with kicad-footprint-generator Harting har-flexicon series connector, B7B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502430-3210, 32 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WSON, 8 Pin (http://www.ti.com/lit/ds/symlink/lmr14030.pdf#page=28, http://www.ti.com/lit/ml/msoi002j/msoi002j.pdf), generated with kicad-footprint-generator JST XH series connector, 505405-0270 (http://www.molex.com/pdm_docs/sd/5054050270_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WQFN, 24 Pin.
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