Just upload a sketch that only turn on/off the motor's. It seems like you have not enough power to let te motors spin. How do you feed the motor(shield)? I hope not via the 5v of the arduino because that pin doesn't have enough current.
Just upload a sketch that only turn on/off the motor's. It seems like you have not enough power to let te motors spin. How do you feed the motor(shield)? I hope not via the 5v of the arduino because that pin doesn't have enough current.