Because of heavy rain and thunderstorms this weekend, I had some time to work on my lightning monitor again. With success, I could reduce the "DISTURBER DETECTED" messages significantly by putting the device away from the laptop.
Even better, it was starting to measure lightnings during one of the thunderstorms! Great 🙂
The data makes sense, since we really have been in the center of the thunderstorm. I could verify that the distance estimation works pretty nice, because another thunderstorm that was in a nearby village was giving me lightnings with a distance of 5 km.
The current Arduino sketchbook is, as usual, on GitHub.
Nice thing for a rainy Sunday!