Serial 2 / Telemetry 2 / IRDA
Pinout and schematic for the Telemetry 2 port, which can also be configured as IRDA or extra I2C bus.
On older versions of the RDDRONE-FMUK66, this port could only be used as IRDA. Since RDDRONE-FMUK66 Rev. C, it is by default configured as a free UART, which can be used as Telemetry 2 in PX4. It can still be reconfigured to use it as IRDA or as an extra I2C bus, though pull-up resistors will have to be placed by hand.
RDDRONE-FMUK66 Rev. C connector pinout
RDDRONE-FMUK66 Rev. C schematic
RDDRONE-FMUK66 Rev. B connector pinout
Rev. B (and older boards) are not supported anymore. This information is left for reference.
RDDRONE-FMUK66 Rev. B schematic
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