I'm trying to build a mid-size robot using the Thumper 4wd and two 2.5 Amp motor controllers and 12v/12Amp battery to run it but I don't have torque to turn it around (only to go forward/backwards).
Actually I can easily stop the wheels with my hands. However if I will connect the motor directly to the battery I can't stop it from turning.
So my guess is that the 2.5 amp is not enough or something is wrong.
There is any quick fix for that on the 2.5 amp controller or should I get a new motor controller? Or. I'm pushing the unit to the limits