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BackDays ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules main 5a4e89eea6 Add position for resistor between coarse and +12V, value unknown Align panel to integer pseudo-origin, remove testing text, decrease title label font so we don't lose it Fix annoyance of 2x05 IDC header THT 1x27 2.00mm single row (https://gct.co/files/drawings/bc065.pdf), script generated Surface mounted pin header THT 2x31 1.27mm double row Through hole pin header THT 1x37 2.54mm single row style2 pin1 right Through hole angled pin header, 2x09, 2.54mm pitch, 8.51mm socket length, double rows Through hole IDC header, 2x12, 2.54mm pitch, double cols (https://gct.co/pdfjs/web/viewer.html?file=/Files/Drawings/BD091.pdf&t=1511594177220), script generated Through hole angled socket strip THT 2x10 2.54mm double row surface-mounted straight socket strip, 2x30, 1.27mm pitch, double cols (from Kicad 4.0.7), script generated Through hole IDC header, 2x17, 1.27mm pitch, double rows Through hole straight pin header, 2x21, 2.54mm pitch.
- Module, 19.9x23.6x2.2mm, https://www.quectel.com/UploadImage/Downlad/Quectel_BC95_Hardware_Design_V1.3.pdf GSM NB-IoT Module.
- TO-220F-11, Vertical, RM 1.7mm.