We just launched Gooef.com, an eco-friendly and green search engine over at Keetsa.com.  If you are into eco-friendly stuff, try typing in something like, “gadgets” and you will get a nice list of eco-friendly and green gadgets. I know, the name sounds kinda goofy b ...

Wow, check out this cool sound trigger circuit DIY for High Speed Photography! The general use is quite simple: setup a noisy event to trigger the flash. Since I am using the Sigma EF-500 Flash, which have an internal “dumb slave”, I activate a led to tell the flas ...