Description

This tutorial explains how to setup telemetry in the following configuration:

Wiring

First of all, TX on the UART2 port of the SPRacingF3 flight controller should be connected to S.Port on the X4RSB receiver as follows:

The following content is given for Betaflight. It should be very similar to the procedure in CleanFlight.

On the Ports menu, configure UART2 as follows:

Notice that the SmartPort item should be selected instead of FrSky in the Telemetry Output dropdown.

Enable the telemetry option in the Other Features section of the Configuration tab:

Because FrSky telemetry signals are inverted, you need to enter the following command in the CLI menu:

set tlm_inversion = ON

Notice that on older versions, the command should be set telemetry_inversion = ON.

For a better precision of cell voltage, you can also enter:

set frsky_vfas_precision  = 1

Now, save:

save

On the Taranis X9D Plus, go to the telemetry screen of your model and click on Discover new sensors:

You should be able to see VFAS and A4 (or cells):

Keywords: drones quadcopter fpv racing telemetry