I lost my directions here (pun intended?)
Most of us know our smartphones don't need to be calibrated everytime we want to use the gyroscope (Although I found out some old Samsung devices could do this).
I've been experimenting with Gyro and Accelero to get the current angle of the sensor, but this only works after you calibrated the thrifting for a few seconds. Note that I need the angle, so It's more complicated than just getting the acceleration.
Why do I need to calibrate this each time I repower my sensor? How do phone companies for example manage to not make the user calibrate it?
I've been using the MPU6050 (or some of that serie) with Kalman filter, did I just use the wrong algorithms? Do manufacturers test the thrifting and save those values before they get shipped to customers?
Thanks a lot