Reply To: AccZ angle trig check?

Home Forums Forums Technical Support for BerryIMU AccZ angle trig check? Reply To: AccZ angle trig check?

#9969
Mark Williams
Keymaster

1)

Without "+P",  the values returned are from -180 to +180.   0 being horizontal (or level)
With "+P",  the values returned are from 0 to 360.     180 being horizontal (or level)

We wanted to use -180 to +180 for both X and Y.  This is easy for the X axis, but the Y axis is orientated differently in the IMU, so we have to use Pi to get values between 0 and 360 and then we use other code just below the atan2 lines convert it to -180 to +180

2)

You cant calculate Z angle (or yaw) using accelerometer as the Z value never changes when spinning the IMU.  To get this value, you would need to use the compass (magnetometer)

 

Mark --OzzMaker.com --

Blip, blop, bloop...