Buying a Geiger counter kit is an excellent way to learn about radiation physics and electronics. Kits range from "barebones" modules for Arduino projects to complete, open-source handheld devices. Top Kit Recommendations MightyOhm Geiger Counter Kit Go to product viewer dialog for this item.

: A modern, compact sensor module designed by IoT-devices. It is ready to plug into microcontrollers like the ESP32

: Widely considered the "gold standard" for hobbyists. It is 100% open-source, hackable, and usually includes a classic Russian tube. It features an ATtiny2313 brain and supports serial data logging. GGreg20_V3 Ionizing Radiation Module Go to product viewer dialog for this item.

: A budget-friendly, pre-assembled or DIY board often found on AliExpress. While inexpensive, it requires careful handling as the high-voltage circuit is exposed. Imagesco GCK Series

⚠️ : The tube is the most critical (and expensive) part. : Robust, reliable, and detects Beta and Gamma radiation.

: High-end; can detect radiation (requires a thin mica window). 🔋 Power & Safety : Geiger tubes require 400V–500V DC to operate. Look for kits with a built-in high-voltage converter.