Geiger counter with Vacuum fluorescent display
This repo is a collection of all the parts to build an ESP32 based handheld device to measure radioactivity with a Geiger–Müller tube & display info on an VFD.
Future plans are Home Automation integration, logging radioactivity measurements over WiFi & displaying additional information like e.g. a Clock.
The device is be powered via Micro-USB port of the ESP32. Note that the current draw of the VFD may exceed the 500mA USB standard.
PCB
The PCB is designed in KiCad. All source files are in the pcb Subdirectory.
Schematic:
PCB:
3d render view:
Case
The Case is designed in OpenSCAD. Sources reside in the case Subdirectory.
Firmware
The firmware is written using Espressif-IDF and lives in the firmware directory.