30 Jun '14, 5am

A Cloud Of Lightning Detectors

Here’s an interesting project to plot every lightning strike on Earth . Blitzortung is a project that uses many extremely low-cost sensor boards packed with an amplifier, microcontroller, and an Ethernet socket to detect lightning strikes. When multiple stations send all that data up to a server, the location of lightning strikes can be calculated, even if they’re hundreds of miles away from any station. Each station works by detecting a change in the local EM field caused by a lightning strike with either a large loop antenna or a smaller ferrite core antenna. These signals can be amplified and turned into usable data, time stamped, and sent out on the Internet. From there, it’s a simple time of flight calculation to precisely locate where lightning strikes. The hardware is actually pretty simple, with based on an STM32F4 Discovery board. A controller includes an Ethernet...

Full article: http://hackaday.com/2014/06/29/a-cloud-of-lightning-detec...

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