2 layers73 × 139 mm

OpenRPNCalc
apoluekt/OpenRPNCalc
Open-source and open-hardware scientific RPN calculator
141 parts414CERN-OHL-P-2.0
Boards in 2 GitHub repositories, designed in KiCad, that use the BC-2013 by MPD (- Button And Strip Battery Connector ROHS). See how each wires it, with its parts, size, README and files; the BC-2013’s symbol, footprint and pinout are on its own page.

apoluekt/OpenRPNCalc
Open-source and open-hardware scientific RPN calculator

uge/jetboard
KiCad and related artifacts for a WSPR tracker based on Traquito/Jetpack