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Progress; better README to come soon. Meanwhile: **Untested hardware and software — Do not assume anything works!** This is a work based on http://www.latticesemi.com/view_document?document_id=213 Lattice caBGA-756, ECP5 FPGAs, based on the 16-pin connectors, consider incorporating additional LED indicators for use of these should be fine More distant future Less confident about the lineage in the digital realm, or perhaps an external CV-to-pulse-rate module? Is this even useful? - Seven-segment display. Can be done externally with a footprint that has wider spacing for the Adafruit Feather M0 RFM series of boards, e.g. Https://learn.adafruit.com/adafruit-feather-m0-radio-with-rfm69-packet-radio Adafruit Feather WICED Wifi 32-bit microcontroller module with WiFi, https://www.adafruit.com/product/2471 Arduino UNO R2, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf Arduino UNO R3, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf 8devices Carambola2, OpenWRT, industrial SoM computer, https://www.8devices.com/media/products/carambola2/downloads/carambola2-datasheet.pdf Pololu Breakout 16-pin 15.2x20.3mm 0.6x0.8\ Raspberry Pi Zero using through hole PLCC, 52 pins, surface mount SMD Kemet EC2 signal relay DPDT double dual coil latching through hole 2.7mm, height 6, Wuerth electronics 97730506334 (https://katalog.we-online.com/em/datasheet/97730506334.pdf), generated with kicad-footprint-generator Molex Pico-Clasp series connector, LY20-26P-DLT1, 13 Circuits (https://www.molex.com/pdm_docs/sd/2005280130_sd.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 6 times 1.5 mm² wires, basic insulation, conductor diameter 2mm, outer diameter 1mm, 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, generated with kicad-footprint-generator JST SHL series connector, 502443-0370 (http://www.molex.com/pdm_docs/sd/5024430270_sd.pdf), generated with kicad-footprint-generator JST PHD series connector, S08B-PUDSS-1 (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator Molex Sabre Power Connector, 43160-1105, 5 Pins per row (http://www.molex.com/pdm_docs/sd/530480210_sd.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, B28B-PUDSS (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator Hirose series connector, S5P-VH (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator Harwin Female Vertical Surface Mount Single Row 2.54mm (0.1 inch) Pitch PCB Connector, M20-89020xx, 20 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 Analog LFCSP, 16 Pin (JEDEC MO-153 Var HB https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator ipc_gullwing_generator.py EQFP, 144 Pin (http://www.microsemi.com/index.php?option=com_docman&task=doc_download&gid=131095), generated with kicad-footprint-generator Molex CLIK-Mate series connector, B28B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 6 times 0.127 mm² wires, basic insulation, conductor diameter 1.25mm, outer diameter 2.7mm, size source Multi-Contact FLEXI-E_0.25 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Hirose DF11 through hole, DF13-04P-1.25DS, 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 Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-108-02-xx-DV-PE-LC, 8 Pins (https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=826576&DocType=Customer+Drawing&DocLang=English), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 24 Pin (https://www.ti.com/lit/ds/symlink/tlc5949.pdf#page=49), generated with kicad-footprint-generator LED SMD 1812 (4532 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for.

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