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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:

schematic

PCB:

pcb

3d render view:

3d render back 3d render front

Case

The Case is designed in OpenSCAD. Sources reside in the case Subdirectory.

plot

Firmware

⚠️ Work in Progress ⚠️

The firmware is written using Espressif-IDF and lives in the firmware directory.