[MaxMax161]

I'm no PID expert but I whipped up a virtual PID example in LabVIEW that I think works pretty well. It adds a 5% margin of error to the motor speeds on either side to better simulate imperfect mechanical things and show how PID beautifully overcomes these things. It's not perfect but this should be a good tool if you want to play with PIDs on the computer to get the hang of them. Oh some good numbers to play with your first time are P= 1, I= 0.01, and D=0.