About ZeeshanAziz

I am using matlab just for getting the data and plotting that data. I am doing all the calculations on STM32 Discovery board. I am also using complementary filter and the formula that I am using for calculation roll and pitch is "atan2(ACC_z, ACC_x)" and "atan2(sqrt(ACC_z*ACC_z + ACC_x*ACC_x),-ACC_y)" respectively. Now I have also attached the excel file. Major error can be seen on 3, 4 and 5 degree in 12g configuration as instead of 3, 4 or 5 degree I am getting  356, 357, 358 or 359 degrees. What I am suspecting is that the accelerometer values given by sensor are not correct. If this is the problem then can my sensor be damaged or faulty?  ... View more

Thanks for replying. When I am rotating the sensor in potive x-axis direction, then the values of accelerometer should also increase. But instead of continously increasing, the values increases as well as decreases. You can see the datalog attached. In the data log, first three columns are of accelerometer x, y and z respectively. And 8th column is of "Roll" in degrees. These are the rotation from 0 to 8 degree approximately. ... View more

By not accurate and fluctuate I mean that when I am rotating the sensor in potive x-axis direction, then the values of accelerometer should also increase. But instead of continously increasing, the values increases as well as decreases. You can see the datalog attached. In the data log first three columns are of accelerometer x, y and z respectively. And 8th column is of "Roll" in degrees. These are the rotation from 0 to 8 degree approximately. ... View more