##openimu OpenIMU is a tool used for accelemeter calibration using the six surface method by least square method. Hold the IMU still with every surface down and then click the Sample Button on the GUI, the program will sample 100 samples of accelemeter. The program can auto detect which surface is down at present. After six surfaces are down, the program will calibrate the accelemeter, and give the calibration result on the GUI table.