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Https://datasheet.lcsc.com/lcsc/2206091745_XKB-Connectivity-U254-051T-4BH83-F1S_C397452.pdf USB Micro-B Receptacle SMD USB Micro-B receptacle, horizontal, SMD, 10118193, without flange, https://cdn.amphenol-icc.com/media/wysiwyg/files/drawing/10118193.pdf Dustproof Micro USB Typ-B (http://www.molex.com/pdm_docs/sd/1051330001_sd.pdf Micro-USB SMD Typ-B GCT Molex Vertical Micro USB Type C, right-angle, SMT, https://datasheet.lcsc.com/lcsc/2204071530_G-Switch-GT-USB-7010ASV_C2988369.pdf USB Type A, Kycon KDMIX-SL1-NS-WS-B15, Vertical Right Angle, Surface Mount, ZIF, Bottom Contact FFC/FPC, 200528-0130, 13 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ038187.pdf), generated with kicad-footprint-generator Molex SPOX Connector System, 43045-0221 (alternative finishes: 43045-240x), 12 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator Hirose FH12, FFC/FPC connector, FH12-14S-0.5SH, 14 Pins per row (https://www.hirose.com/product/en/products/FH12/FH12-24S-0.5SH(55)/), generated with kicad-footprint-generator JST XH series connector, S8B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 5/4-H-7.5-ZB Terminal Block, 1732551 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1732551), generated with kicad-footprint-generator Soldered wire connection, for a set screw. Quality_of_set_screw = 20; // tweak on this and/or Hagiwo's quantizer, if going digital ** https://note.com/solder_state/n/nde97a0516f03 and https://www.youtube.com/watch?v=op_DhPr2goc ** arduino nano clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a microcontroller but no DAC. Also interesting UI, featuring lit pushbuttons in a circle. Enable_sphere_indents = false; .

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