In the event you’ve chosen the incorrect channel map in Betaflight, your drone will reply to the incorrect sticks, inflicting management points. It’s important to make sure the proper channel map is chosen within the Receiver tab in Betaflight. In the event you’re uninterested in altering the channel map every time you arrange a brand new drone, I may also present you easy methods to configure channel order in your EdgeTX radio so that you received’t want to vary 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 based mostly 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?
You might marvel why channel map is required. Nicely, 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 incorrect channel map in Betaflight will end in incorrect responses to your stick inputs. Your quad could refuse to arm resulting from 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 underneath 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)
How you can 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 frequent choice: TAER (listed as “Spektrum / Graupner / JR”)
If not one of the preset choices appropriate the problem, 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 inserting:
- 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 establishing switches within the MIXES web page: https://oscarliang.com/setup-switch-mixes/
You may also need to verify/set the default Channel Order in EdgeTX – it ensures each new mannequin profile created in your EdgeTX radio will robotically 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.
How you can 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 vary 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.
Be aware: The order of controls within the INPUTS tab doesn’t matter and might 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 at all times reply accurately to your controls, permitting you extra time flying and fewer time troubleshooting. Joyful flying!
Edit Historical past
- 2020 – tutorial created
- Mar 2025 – tutorial up to date
