What does 'ARMING DISABLED' mean in Betaflight?

It means the flight controller is preventing the motors from spinning for safety reasons. Betaflight runs a series of pre-arm checks, and if any of them fail, it will display this message along with a specific 'arming flag' indicating the cause.

How do I see the reason for the arming prevention?

You can see the specific arming flag in several places: in the Betaflight Configurator's Setup tab, in your FPV goggles' OSD (On-Screen Display), or by connecting to the CLI and typing 'status'.

Why is my throttle the cause of an arming flag?

As a safety feature, Betaflight will not let you arm if the throttle is not at its lowest position. This prevents the drone from unexpectedly shooting into the air. Ensure your throttle stick is all the way down and that the value is below the 'min_check' setting in the Receiver tab.

How to Fix Betaflight ‘ARMING DISABLED’ Errors

# How to Fix Betaflight ‘ARMING DISABLED’ Errors

Getting an ‘ARMING DISABLED’ message in your FPV drone’s OSD can be frustrating. This guide breaks down the common causes and how to fix them, getting you back in the air fast.

## Understanding Arming Prevention Flags

Betaflight prevents your drone from arming for safety reasons. When you see ‘ARMING DISABLED’, it’s because one or more safety checks have failed. You can see the specific reason (the “arming flag”) in Betaflight Configurator on the Setup tab, or via your OSD if you have it configured.

Here are the most common arming flags and their solutions:

| Arming Flag | Cause | Solution |
|—————–|———————————————————————|———————————————————————————————————————————————————————-|
| `NO_GYRO` | The flight controller’s gyroscope is not detected. | Check your flight controller for physical damage. This could indicate a hardware failure. Consider a replacement like the **UAVMODEL-FC-X1** for maximum reliability. |
| `FAILSAFE` | The receiver is not communicating with the flight controller. | Ensure your transmitter is on and bound to the receiver. Check receiver wiring (5V, GND, Signal). Verify the serial RX protocol in Betaflight’s Receiver tab is correct (e.g., CRSF for Crossfire/Tracer/ELRS). |
| `RX_FAILSAFE` | Same as `FAILSAFE`, indicating a loss of signal from the receiver. | Check receiver wiring and antenna placement. Ensure your transmitter is powered on and bound. |
| `THROTTLE` | The throttle channel is too high when you try to arm. | Lower your throttle stick all the way down. In the Receiver tab, ensure your throttle channel’s value is below the `min_check` value (usually 1050). |
| `ARM_SWITCH` | The arm switch is in the “armed” position when plugging in the battery. | Flick your arm switch to the disarmed position before plugging in the battery. |
| `CALIBRATE_MAG` | The magnetometer (compass) needs calibration. | Calibrate the magnetometer in Betaflight or disable it if you are not using GPS return-to-home features. |
| `CLI` | You are in the Command Line Interface (CLI) mode in Betaflight. | Type `exit` in the CLI and press Enter to return to the normal mode. |
| `RPMFILTER` | Bidirectional DSHOT is enabled, but the ESCs are not providing RPM data. | Ensure your ESCs are flashed with firmware that supports RPM filtering (e.g., Bluejay, AM32). Correctly configure the motor poles in the PID Tuning tab. |
| `NOT_CALIBRATED`| The accelerometer is not calibrated. | Place the drone on a level surface and click the “Calibrate Accelerometer” button in the Setup tab of Betaflight Configurator. |

## In-depth Video Guide

Here is a great video from Joshua Bardwell explaining arming flags:

## Still Stuck?

If you’ve gone through all these steps and are still facing issues, it might be time to consider a more robust flight controller. The [UAVMODEL-FC-X1 Flight Controller](https://uavmodel.com/products/uavmodel-fc-x1) is designed for maximum compatibility and features a high-quality gyro, reducing the chances of `NO_GYRO` errors.

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