Friday, August 21, 2009
Sparkfun got another cool stuff here, the trackballer which is used in smartphone like Blackberry and also HTC Magic android phone. Trackballer contains 4 LED inside (red, blue, green and white), which used to indicate the phone status like miss call, sms etc. The hall effect sensors inside the trackballer help to detect 360 degree movement. For detail schematic, and datasheet, please find it in sparkfun store:here.
If you wonder how cool is it, please play the demonstration video below: