Been looking in to using a Gyro and accelerometer to measure angles on a quad copter plan to build to stabilize it . I understand most of the implementation except one thing. Once you convert the voltage to a usable value you get a change in degrees per second etc, which you then compare to your original value over time to get a current value. However how do you get the original value in the first place, would you have to calibrate, lets say for example the drone on flat ground by pressing a button every time you turned it on or am i missing something ?
Any help would be appreciated