Design of the wireless pointer based on micro-accelerometer

To compensate for the lack of laser pointer in multimedia teaching, we propose a wireless pointer system based on micro-accelerometer, which not only has the laser pointer's function that can page up and down, but also can move in the air freely and flexibly to achieve high-precision click. The system adopt ADXL345 accelerometer to sense signal, and use lowpower and low-cost microcontroller AT89S52 and RF chip nRF4L01 to process and transfer information by wireless, and it's ergonomically designed to maximize meet the requirement of people in feel、comfort and habits when using the mouse.