[](https://www.sparkfun.com/products/9836) [*SparkFun Triple Axis Accelerometer ...

The library is intended to work **without any user interference**, just open [project](https://github.com/MatthewPatyk/ADXL345-Arduino-I2C-library/blob/master/ADXL345 ...

Abstract: Currently, China's mining personnel positioning system is obviously lacking and will be gradually replaced by ZigBee or ultra-wideband technology in the future. Therefore, this paper starts ...