- based on Funnel from sparkfun
- general purpose wireless accelerometer // Andreas Otto and HeadBanger project
- small in size(27mmx36mm)
- point to multipoints wireless network
- sleep mode
- MCP1700 (250mA) // 3.4V<Vin <6V
- ATmega168(or 328) 8 mHz
- LiPo rechargable battery // charge through USB
- USB 5V is connected to DC pin of MAX1555. so it draws 200mA(max) in charging. when charging more than 2, it should be done with external wall wart adapter. 
- 1.6K current limiting resister for low current LED(2mA)// 750Ohm for charging satate LED
future work
- missing power decoupling 100nF ( Xbee), 10uF (VR)