Here is a list of compatible and optional hardware that works with the UAVDevBoard, and is supported by MatrixPilot.
GPS Units
Other Accessories
Info on Making Connections
Wiki: ConnectingExtraChannels
Wiki: MagnetometerConnections
Wiki: MatrixPilot
Wiki: OSD
Wiki: OpenLogConnection
Wiki: RemzibiConnection
Wiki: SerialConnection
Wiki: Sidebar
Wiki: SidebarMP33
Wiki: XBeeConnection
Wiki: microSDConnections