ErikZalm/Marlin — pull request #947 by Dim3nsioneer (2014-06-02 06:16:57+00:00)
Title: Add feature 'switch unused feeder(s) off'

Having the non-active feeder motors powered on all the time is not
necessary. A feature to deactivate the unused feeder motors has been
implemented. The feature is enabled on default but can be switched off
in the configuration.
It has been tested on my dual extruder Ultimaker Original.