I agree. It's a nice site and a lovely visualization, but it's not the right way to solve the problem. A PID controller or something similar like a Kalman filte

I agree. It's a nice site and a lovely visualization, but it's not the right way to solve the problem. A PID controller or something similar like a Kalman filter is the way to go. The Anybots robots are a great example of a PID filter in action.