PanelDUE is a RADDS compatible full-colour touch-sensitive graphical control panel. RepRap Firmware does not support the RADDS LCD (presently) so PanelDUE is an alternative when using the RepRap firmware.
Repetier firmware and PanelDUE:
There is some PanelDUE support when using the Repetier firmware (more information when we have tested it).
When using the PanelDUE + RADDS combination you have to enable JSON formated info
Repetier-Firmware configuration tool -> Features -> Enable JSON formatted info..