Accelerometer and gyro static measurements
September 7th, 2010
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In this post I’ll try to investigate what signal is produced by WiTilt accelerometer/gyro controller when it is immovable, whether it is noisy or not.
I placed WiTilt (3-axis accelerometer and gyro controller) on a table and collected data from it. I got 350 samples of raw x,y,z,r (accelerations along 3 axes and speed of rotation) measurements from motionless controller. WiTilt was put on a surface in a way that z axis was directed upward. So, collected data from z accelerometer shall give acceleration of 1g and measurements from x and y axes shall give 0g value. Analyzing the data in Excel, I received the following results (all measurements are in raw ADC values).
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