Icarus has written a tutorial on connecting the MightyOhm Geiger Counter to an ESP8266 module and OLED display. His code (written in LUA for NodeMcu) is available on github. He is using the Wemos D1 mini board.
The 36th annual Mike and Key Amateur Radio Club Electronics Show and Fleamarket will be held next Saturday, March 11th at the Washington State Fairgrounds in Puyallup, WA.
This is one of the best amateur radio events in Washington state and one that I look forward to every year. A couple years ago I came home with a working Hameg HM-507 analog+digital oscilloscope (pictured above) for a hundred bucks!
I have a table at the swap meet this year, and I’ll be selling Geiger counter kits, misc. electronics, and amateur radio gear. Look for the MightyOhm banner.
I hope to meet some local folks there!
- A 7-segment display with brightness control shows the measured radiation level in uSv/hr or total counts since startup.
- ATmega88 instead of ATtiny2313 to allow more space for firmware extensions.
- Battery level monitoring with alarm.
- Phono jack pulse output for connection to monitoring software.
Kits are available from robotev (shipping to Bulgaria and Balkan-area only).