Solar X-rays:
Geomagnetic Field:
From n3kl.org
Mitch Altman's Great Global Hackerspace Challenge, sponsored by Element14 has come to a close a few months ago, and the winners were announced in May. I realize it is mid October, but this site is just getting started.
A while back, I was doing some research for my book about seismometers. As it turns out, the Chinese had developed a clever system to detect earthquakes centuries ago.
If you have come across the RTC8564 Real Time Clock, made by Epson, you know it is a nice alternative to the Dallas DS1307RTC. I have not found the DS clock floating around Akihabara, but Akizuki Denshi carries the Epson part mounted as a through hole module.
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A while back, I was doing some research for my book about seismometers. As it turns out, the Chinese had developed a clever system to detect earthquakes centuries ago.
If you have come across the RTC8564 Real Time Clock, made by Epson, you know it is a nice alternative to the Dallas DS1307RTC. I have not found the DS clock floating around Akihabara, but 