Depending on the vintage of your Duet 0.6, you may have either terminal blocks, pin headers, or Molex KK connectors. If they are white plastic polarised connectors, they are Molex KK or similar.
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].
