That’s why you need a lot of these sensors to correlate them. But I found that an community driven lightning detection network already exists: https://www.lightningmaps.org
But I always find it interesting to see what some sensors can capture, even though they were never designed for it. And what you can achieve with mathematics. Cosmic background noise is maybe one of the best examples. 🙂

Thanks! It’s grown over the years. But it’s only several days per year not messy ;).

Since I am 5 years old I fiddle around with electronics. But in the beginning I had no idea what it was. My father gave me some parts and a breadboard and a 4.5V battery. I build up strange things beside him until he build up “real serious” things on his breadboard. The first LEDs and 7-segment displays are my favorites. Most of the stuff I blew up. I remember connecting all pins from a 4011 CMOS on one side to plus and all on the other over LEDs to minus. Those were the days… 😉

BTW: I can’t longer edit my previous post so I must correct it here. I meant 25 km south not 50. Sorry.

There is no hardware update necessary. You can use the atmega328p build in Programmable Watchdog Timer.