Drivetrain PID tuning

[ollien]

Today, I was encouraging my rookie programmers to utilize the NavX to experiment with PID Control in order to make our robot drive straight. Given that we've never done this in a season, one of the things that crossed my mind is how we should deal with the differences in CoFs between our lab's carpet and that of a true to life field. What have other teams done to account for this? Have you guys just purchased carpet, and just calibrated it on that? What would you use to re-tune your loop at competition?

Thanks so much!