2 layers48.1 × 120.3 mm

Open rad detector
CarlosGS/Open-Radiation-Detector
Portable radiation detector based on an ionization chamber
34 parts65
Boards in 3 GitHub repositories, designed in KiCad, that use the FMMT734 by Diodes Incorporated (-100V, -800mA, PNP Darlington Transistor). See how each wires it, with its parts, size, README and files; the FMMT734’s symbol, footprint and pinout are on its own page.

CarlosGS/Open-Radiation-Detector
Portable radiation detector based on an ionization chamber


mjmorano/Precision-Current-Source
Once it's uploaded connect the Arduino pins to the 6 pin header on the current source as follows:

CarlosGS/Open-Radiation-Detector
Portable radiation detector based on an ionization chamber