[jln646v]

Also, remember that since the value your sending out the pwm port (0-255) is a location, if the servo cant reach that location because something is blocking it, it will still work to reach that location, draining your backup battery very fast and makes the servo very hot.

We had this problem with the 2 speed gearboxes we are using. The servo only had a short range of movement because of the sifter rod, and was killing our backup battery.