The usual way to get drivers for the Duet is to install Arduino version 1.5.x from arduino.cc. The recently-released 1.6.0 should work too, but I haven't tried it.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
