We always thought the solar-powered pendulum (aka: "SunSwinger") was a cool kit. The circuit is clever, tight, and tidy, and was begging to be used in other projects, so after playing with some magnetic spheres, we've created the Zendulum!
This is some footage of the Zendulum working from USB power via a mini-USB B cable. Less than 10mA being consumed!
[ Ссылка ]
Ещё видео!