I found a Lightning Detector do-it-yourself Website …don’t know if it’s in direct correlation
to the kit you’re interested in… But it seems simple enough to make.
Might even make a go at it myself. Website has excellent pics & diagrams.
Probably give you and others ideas in making one.
Link Below: Basic Stamp Lightning Activity Monitor
http://homepage.mac.com/tbitson/weather/bslam/index.html