TBS Crossfire Manual

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VTx button is not working
When the Unify32 detects a signal on the SmartAudio Signal-in pad, it will disable the button. To change
the VTx to CRSF or SA, you can unsolder the wire or force your crossfire rx to not output any signal.
● Set the output of the Crossfire Rx to CH X (PWM) for the pin where the VTx is connected to
● Shut down the Crossfire Tx and Rx
● Power up just the drone with the Crossfire Rx and the Unify32
● Change the Unify32 settings by the button
● Turn the transmitter back on
● Set the output map back to CRSF or SmartAudio
Connection to an FC
General wiring
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If you use SBus or any other protocol beside CRSF or MAVLink, you only need to connect the receivers Tx
line to your FC. Use CRSF whenever possible to get the best experience with your Crossfire.
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If you use a F4 FC, make sure you don’t use UART’s
with labels with  SBUS  or  S-PORT . Those UART’s got
a hardware-inverter installed which does not work
with CRSF.
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