Introduction:

Introducing OpenRad, a simple radiation monitoring solution powered by the SBM-20 GM tube and TTGO ESP32 microcontroller. this project offers a user-friendly approach to tracking and measuring radiation levels.

With OpenRad, you can build your own dosimeter without complexity. The SBM-20 GM tube detects ionizing radiation while the TTGO ESP32 gathers and transmits data to its built-in website.

The code and design files are all available at the GitHub Repository.

Check the project on hackaday.io.

Features:

1. Radiation Detection and Data Logging: OpenRad measures and logs the radiation level over time. It also keeps track of the accumulated dose ( which can be reset in the settings).
2. Simple On-Device Interface: The TTGO ESP32 screen features a straightforward interface displaying radiation data, battery status, and a settings menu for easy device configuration.
3. Real-Time Monitoring and Hosted UI Interface: using WebSocket, OpenRad enables real-time communication between the device and the hosted website. Users can seamlessly monitor radiation levels and configure device settings via the user-friendly web interface.
4. Wi-Fi Connectivity: OpenRad connects to the Wi-Fi network, enabling remote access to the device and real-time updates on radiation levels. (Users may need to adjust port forwarding settings for remote access.)
5. MQTT Connectivity: Additionally, the device interfaces with MQTT, making for easy integration with other devices and platforms.
6. High Radiation Alert: Users can set an alert for dangerous radiation limits.

Software:

OpenRad's software architecture has several components, each serving a purpose and contributing to the device's functionality.

Device UI interface

Embedded Software:

• PlatformIO: OpenRad is developed using PlatformIO which streamlined the development process.
• LVGL: used to create the user interface on the device's display.

Web Interface:

• Pure HTML, CSS, JS Website: The hosted website on the ESP32 is built using pure HTML, CSS, and JavaScript, providing a lightweight and responsive interface.