How It Works

• The device uses a small computer chip connected to your local WiFi network.

• It regularly fetches the latest solar X-ray flux measurements from a NOAA GOES satellite

• The device interprets the data and uses a simple LED to display: - No activity → dim or steady light - Low-level activity → slow blink - High activity → fast blinking

• Configuration is done via a built-in WiFi setup portal, making it easy to connect the device to any home network.

This makes the Solar Flare Alert a practical, hands-free monitoring tool for astronomy educators, radio operators, scientists, or anyone interested in real-time space weather awareness.

OK. And now, you might be interested in learning more about solar flares? Here it goes then.

And, finally, if you fell courageous, you can also program the ESP32 microprocessor, which is the core of this project. More instructions are given here.

If you are going to make extensions or new version of the software, you can also contribute using our GitHup page.

Have fun!