https://github.com/mryndzionek/attiny3226_geiger

ATtiny3226 Geiger counter
https://github.com/mryndzionek/attiny3226_geiger

attiny3226 avr-gcc geiger geiger-counter geiger-muller oled oled-display radioactivity u8g2 u8g2-library

Last synced: 4 months ago
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ATtiny3226 Geiger counter

• Host: GitHub
• URL: https://github.com/mryndzionek/attiny3226_geiger
• Owner: mryndzionek
• License: mit
• Created: 2025-03-08T19:16:03.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2025-03-26T22:00:43.000Z (7 months ago)
• Last Synced: 2025-03-26T22:33:28.519Z (7 months ago)
• Topics: attiny3226, avr-gcc, geiger, geiger-counter, geiger-muller, oled, oled-display, radioactivity, u8g2, u8g2-library
• Language: C
• Homepage:
• Size: 986 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
[![build](https://github.com/mryndzionek/attiny3226_geiger/actions/workflows/build.yml/badge.svg)](https://github.com/mryndzionek/attiny3226_geiger/actions/workflows/build.yml)

![header](resources/header.png)

The goal of this project is to design a Geiger counter and

continuous radiation monitor in one device. This means two things:

 - low energy consumption, so batteries last for months of continuous monitoring

 - a display capable of displaying exact instantaneous radiation levels

Nice to have things:

 - measurement history (at least 10 minutes)

 - cumulative dose

## Schematic

![schematic](resources/schematic.png)

## Building

At least 14.1.0 `avr-gcc` is required. Steps needed to build from source can be found in

[build.yml](.github/workflows/build.yml). [u8g2](https://github.com/olikraus/u8g2) needs to be

cloned into `external` subdirectory. Then the usual `CMake` routine can commence:

```sh

mkdir build

cd build

cmake -DCMAKE_BUILD_TYPE=Release -DAVR_MCU=attiny3226 \

      -DAVR_PROGRAMMER=serialupdi -DAVR_PROGRAMMER_PORT=/dev/ttyUSB0 \

      -DMCU_FREQ=10000000 -DCMAKE_TOOLCHAIN_FILE=../toolchain-avr-gcc.make ..

make -j

```

Fairly recent [AVRDUDE](https://github.com/avrdudes/avrdude) is also needed in order to use

UPDI flashing via a USB-to-serial converter.

## Menu structure

![menu](resources/menu.png)

## More info

The average current consumption with display turned off is ~200uA.

A set of 3 AAA batteries should last more than a year.