Low resolution, slow and almost totally useless: this homemade cellphone-based surveillance camera is one of the best inventions ever. I don't know if it's the Gilliamesque looks, the 80s phreaking flavor or the fact that the solenoid relays—which control the cellphone keys—make it feel like an Old West telegraph machine, but I would definitely snatch it after seeing it in action:


To do it you just need a cellphone with camera, a microcontroller, the solenoid relays, a photoresistor, LEDs, resistors, wires, soldering iron, assorted tinkerman material and know what the heck you are doing. I mean, they call this "instructable," but I hope they are "eBayables" for the soldering-impaired dorks like me. [Instructables]