Use an Arduino to detect lightning along with a an approximate distance. via instructables
… I have several Arduino nanos laying around and was itching to make something. In my searching I found the AS3935 Lightning detection sensor. Franklin as3935 (Here’s a link to some data on it.) It’s a low power lightning sensor that packs a lot of info into a small package.
Most Arduino lightning detection projects basically just tell you that something “lightning-like” occurred. This sensor actually watches for the particular Waveform of lightning at 500Khz and gives a distance approximation! Kinda of a cool little gadget to have in your pocket next time it thunders! I immediately wanted to try one out!!