I played around a little with the AS3935 development kits in the hopes of doing just what Mark suggested--putting together an array of lightning detectors with GPS time stamp, using the PICTIC+ time-stamper designed by Richard McCorkle. We already have a global array of cosmic-ray detectors, and some of my students want to see if we can find a correlation between lightning and cosmic-ray air showers. I was hoping that the AS3935 had a pulse output synchronous with detecting a lightning discharge, but the only output is serial data, which seriously limits the time-stamp precision. I'd love to hear if anyone has any ideas for getting a low-latency TTL output from this detector. Tom Bales Date: Mon, 09 Sep 2013 13:45:07 -0700 > From: Jim Lux <jimlux@earthlink.net> > To: time-nuts@febo.com > Subject: Re: [time-nuts] Lightning Strike Site > Message-ID: <522E3353.4020402@earthlink.net> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 9/9/13 1:20 PM, Mark Sims wrote: > > A cute little lightning detector based upon the AS3935 lightning > detector chip: > > > http://www.embeddedadventures.com/as3935_lightning_sensor_module_mod-1016.html > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > A network of those and a decent GPS time hack and you could probably do > fairly reasonable lightning stroke position measurement. > > to a first order, 1 microsecond would give you 300m precision, which is > pretty good. > > > >