PixRacer Serial Mapping¶
Many different names are given to the serial hardware on PixRacer where ArduPilot is concerned. This document attempts to supply a mapping between them.
|DataSheet||Param Prefix||HW Label||Default Protocol||Notes|
** While the default here is GPS, the port is inverted so this won’t work with a GPS, it was intended for use with FrSky receivers for telemetry. Usually SERIAL4_PROTOCOL should be set to an FrSky protocol and a diode tied from TX (anode) to RX and attached to the SPort of an FrSky receiver.Alternatively, SERIAL4_OPTIONS can be set to 2, to disable the inverters for normal use.
## can be used for firmware upload instead of USB port, if needed.