The encoder motors work well with the "old motor driver" library to find a position, but there is a loud humming sound from the motors even after they find the desired position. It seems the Motor driver is still "hunting" for a position with a high frequency PWM signal even after it finds it. I downloaded the PID tuning software for the encoder motor driver and connected it up to the board. I tried adjusting the tuning parameters, but didn't have any luck. I could tune down far enough to silence it, but the motor reaction was so slow it wouldn't move when I gave it a real command. Also, the reset command doesn't seem to work to disable the humming. Is there a way to eliminate this humming or is there a way to get the driver board to work with the " new encoder library" library? Or could makeblock release the firmware for the encoder driver board so I could modify/add a command to shut off the motor driver ? Any help would be greatly appreciated.