VTX telemetry is an essential feature for FPV drones, allowing pilots to adjust the video transmitter (VTX) settings via the OSD, without having to physically access the drone. This technology reduces setup time and improves flight efficiency.
Advantages of VTX Telemetry
With a telemetry-enabled VTX, you can easily change settings like channels and power through the OSD, without the use of physical switches.
Supported Telemetry Protocols
The main supported protocols are:
- SmartAudio by TBS
- Tramp Telemetry by ImmersionRC
Both protocols offer similar features, allowing remote management of VTX parameters through Betaflight and reducing the need for manual changes.
VTX Telemetry Compatible
Here are some of the most popular VTXs compatible with these protocols:
- TBS Unify Pro (SmartAudio)
- TrampHV (Tramp)
- Holybro Atlatl (Tramp)
- Matek VTX (Tramp)
- FuriousFPV Stealth Race (Tramp)
- ChaosFPV TX508 VTX (SmartAudio)
Configuring the Telemetry Wiring
Connect the VTX telemetry cable to a free UART TX port on the flight controller. This connection allows you to transmit settings from the FC to the VTX.
Enabling VTX Telemetry in Betaflight
- Open Betaflight settings.
- Go to the UART port used for the VTX.
- Select the protocol (TBS SmartAudio or IRC Tramp) from the menu and save.
Accessing and Changing the OSD Menu
To access the OSD setup menu:
- Set the yaw stick fully left and the throttle to halfway to open the OSD in flight.
- From the OSD menu, navigate to “FEATURES” > “VTX” to access the channel, power, and operating mode settings.
VTX Telemetry Operating Modes
Key modes include:
- PIT Mode : Limits transmission to minimize interference when setting up on the track.
- Race Mode : Allows you to activate full power only before flight, avoiding initial interference with other pilots.
- Freestyle Mode (Solo) : Operating at full power, allows complete adjustment without limitations.
Conclusion
VTX Telemetry offers simple and intuitive management of VTX settings for an improved FPV experience and quick setup.
