[DonRotolo]

Our motors buzz also at low speeds, it's an artifact of the way PWM control works. A whining noise is geard, a hum/growl/buzz (almost like a buzzing electrical transformer) at low speeds is somewhat normal.

If only one is doing it, the other (quiet) one might have something wrong...

See if you can visit any other team to hear their bot before you go crazy trying to fix anything.

Don