thanks 
Were you using the 055 for roll though?
The way AgOpen uses IMU head is fairly tolerant of drift.
If you tried using a drifting sensor for roll the output could keep gradually rotating, even while the tractor is on level ground. This drift could get to the point that the program thinks the tractor is on its side (or even upside down) when it is still upright and steer quite a way off line to compensate.
Why not using BNOo55 without reading roll, only heading?! (If you have flat ground)
You Can. Just go in ino and send 8888 or 9999 for Roll . I forgot right value
Because the farm in question resembles a camel’s back
tnx you all guys fore help i order the bno055 ( the 080/085 is kinde hig pirce fore it and also there is no one stock…) so wen i get it will turn off the roll component and test it and let you know my experience