I am looking for a way to grab the accelerometer data from the monitor one and calculate the RPM of the device that happens to be in a piece of rotating equipment. The device is mounted facing the center of rotation about 3 feet away. If anyone has done something similar I would love to know how it was done.
I don’t know the answer to your problem, but the BMI160 IMU in the Monitor One/Tracker SoM should be able to do it.
If you have to use the accelerometer, there’s presumably a lot of math involved to figure out which way it’s facing.
If the rotation is perpendicular to gravity, you might be able to use the gyroscope to know when the device goes around, which should be a much simpler calculation.