Im enjoying my gimbal now. And at last im happy to go work with it.

But now i have another problem that i dont realy know how to asses.
I did a day long tune earlyer and was happy with the ressults. Everything was working fine.
The gimbal has now been sitting for well over two weeks and today i went to fire it upp.
Nothing working, twitching arround and screeching from the motors.
Went into the gui, and found that booth acc and gyro where not calibrated?
Can you loose the calibration data withouth doing anything to it?
Had to redo pids aswell after that. Nothing was working as it should.
And i now have to do another day with tinkering, wich altough not realy a pain, would be if i have to redo it every 14 days...

Anyone experienced this?

System:

Selfbuilt frame, carbon fiber and aluminium rigid!
Alexmos32b, no frame imu
5015motors with encoders
imu located close to center line of camera, on top.
No I2C errors beefore, but had some during auto tune of pitch, and just then.
Imu wire does not pass trough any motors.
Power: 3s 12v