When Nintendo Wii motes first appeared, they were some of the few devices at the time with cheap MESM accelerometers and gyroscopes that were programmer-friendly.
I remember taping two together back to back and integrating acceleration across them. That's when I learned Kalman filters. It was accurate enough so I could throw it across my desk and measure the desk length :)
I remember taping two together back to back and integrating acceleration across them. That's when I learned Kalman filters. It was accurate enough so I could throw it across my desk and measure the desk length :)