We have seen quite a few remote controlled gadgets, controlled by the iPhone, the latest one is this fun iPhone controlled Solar Powered Arduino Tank from the guys over at Project Allusion.

Power Integrations is showing off its GaN technology with a PSU development kit for solar-powered racing cars, that it is offering free to such teams.

More than 30 college teams are showing off their innovations in solar car technology this week at a three-day race in Bowling Green, Kentucky.