7578
« on: September 12, 2012, 01:27:05 PM »
Would think that almost impossible as the servo is connected to the drive and then the drive to the breakout (if you have one) then finally the breakout to the port so it would be the breakout that damaged the port if it is but cant see how an overheat could cause that to happen.
You can test the Dir pin with a volt meter, if you connect the meter between the Dir pin and a Gnd pin you can jog one way and the other and you will see the voltage change, the Step pin can also be checked to a certain extent with a volt meter. You connect between the step pin and Gnd and depending on the active state you will either see maybe a few hundred mV register when you jog or see the 5v drop a few hundred mV. The only real way to check though is with a scope.
Have you tried using different pins on the breakout if you have any spare, even swapping around an axis on the breakout, say X for Z and vice versa.
Hood