An Arduino self-balancing robot: working prototype

I spent some time reading on accelerometers, gyros, sensor fusion, PID, optimized PWM motor control. I tinkered with the components I have for a while and then procrastinated for even longer. Finally, I can say that I have a prototype of a self balancing bot that shows promise.http://www.youtube.com/watch?v=oK_kQzm8P8MMore fine-tuning is needed, and I plan to add a Bluetooth module to get PID controller data wirelessly, possibly to adjust the PID coefficients in real time and, hopefully to steer the bot remotely someday. (more…)