If you happen to’ve chosen the fallacious channel map in Betaflight, your drone will reply to the fallacious sticks, inflicting management points. It’s important to make sure the proper channel map is chosen within the Receiver tab in Betaflight. If you happen to’re bored with altering the channel map every time you arrange a brand new drone, I will even present you methods to configure channel order in your EdgeTX radio so that you gained’t want to alter it once more.
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What’s Channel Map in Betaflight?
Channel mapping refers back to the order during which your radio’s controls (throttle, yaw, pitch, roll) are transmitted to your drone. Betaflight expects these controls in a particular order primarily based in your settings.
The 2 commonest channel map settings for FPV drones are:
- AETR (Aileron, Elevator, Throttle, Rudder)
- TAER (Throttle, Aileron, Elevator, Rudder)
Every letter represents a particular channel:
- A (Aileron) = Roll (left/proper)
- E (Elevator) = Pitch (ahead/backward)
- T (Throttle) = Throttle (velocity up/down)
- R (Rudder) = Yaw (rotate left/proper)
In case your radio’s channel order doesn’t match Betaflight’s setting, your controls will turn out to be combined up—for instance, throttle controlling roll or yaw controlling pitch.
Why is Channel Map Essential?
It’s possible you’ll surprise why channel map is required. Effectively, a channel map defines the order of channel outputs (stick instructions). Nevertheless, when these outputs attain the receiver, they’re merely numbers. Your flight controller must be explicitly knowledgeable which quantity corresponds to every command (throttle, pitch, roll, yaw).
Choosing the fallacious channel map in Betaflight will end in incorrect responses to your stick inputs. Your quad might refuse to arm as a consequence of throttle not being at zero, or if it arms, it might behave unpredictably and uncontrollably.
Default Channel Order in Betaflight
You possibly can view or change the channel map in Betaflight Configurator below the “Receiver” tab, listed as “Channel Map”.
The default Betaflight channel order is AETR1234:
- CH1: Aileron (Roll)
- CH2: Elevator (Pitch)
- CH3: Throttle
- CH4: Rudder (Yaw)
The right way to Repair Improper Channel Map
In case your receiver channels are combined up, merely attempt a unique channel map choice within the Receiver tab of Betaflight Configurator:
- Betaflight default: AETR (AETR1234)
- Various widespread choice: TAER (listed as “Spektrum / Graupner / JR”)
If not one of the preset choices appropriate the difficulty, verify your transmitter’s channel mixing configuration. Directions are supplied within the subsequent part.
Channel Order in EdgeTX Radio
You possibly can view your radio’s channel order on the MIXES web page in any EdgeTX radio.
To keep away from altering Betaflight’s channel map each time you setup a brand new drone, I’d advise to set your radio’s default channel order to match Betaflight’s default (AETR). This entails putting:
- Aileron (Roll) on Channel 1
- Elevator (Pitch) on Channel 2
- Throttle on Channel 3
- Rudder (Yaw) on Channel 4
Additional Studying: Take a look at this beginner-friendly tutorial on organising switches within the MIXES web page: https://oscarliang.com/setup-switch-mixes/
You may also wish to affirm/set the default Channel Order in EdgeTX – it ensures each new mannequin profile created in your EdgeTX radio will routinely use the specified channel order:
- Press the SYS button to entry radio settings.
- Navigate to the Settings tab.
- Scroll down and discover Default Channel Order.
- Set it to AETR.
- Press Return to save lots of your modifications.
The right way to Change Channel Order in EdgeTX
To rearrange channel order in your EdgeTX radio, navigate to the MIXES web page in Mannequin Setup, and reorder the primary 4 channels as wanted. For instance, to alter TAER to AETR:
Choose the channel you want to transfer, maintain the Enter button, and click on on “Transfer.”
Transfer THR to CH3 (simply above ELE).
Transfer AIL to CH1, and ELE to CH2.
Verify that the channel map in Betaflight is now appropriate.
Word: The order of controls within the INPUTS tab doesn’t matter and may stay unchanged.
Conclusion
Setting your EdgeTX radio’s default channel order to match Betaflight’s (AETR) simplifies your setup course of considerably. With this adjustment, your drones will all the time reply accurately to your controls, permitting you extra time flying and fewer time troubleshooting. Glad flying!
Edit Historical past
- 2020 – tutorial created
- Mar 2025 – tutorial up to date
