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      J150 Arm lock Sensor Preventing Takeoff.

      This article outlines confirming arms are locked, and bad sensor preventing take off.

      Quick Note: Always Operate with safety and caution. Always conduct Pre Flight Checks and ensure arms are locked and fastened securely. Click Here for Pre Flight Checks article.

      Arm lock Sensor Preventing Takeoff.

      Key Steps

       

      1. Check Arm Lock Status.

      • Ensure that all the drone's arms are locked, and tightened. (this should be done in pre flight checks.) Click Here for Pre Flight Checks article.

      • If the arms are NOT locked and fastened securely. IT IS EXTREMLY IMPORTANT YOU DO SO BEFORE ATTEMPTING TO FLY, OR SPIN UP PROPELLERS.

      • If the arms are locked, Then this is most likely a sensor issue. Please continue with the steps below.

       

      2. Verify Sensor Functionality.

      • Check if all sensors are functioning properly.

      • If a sensor is not working, take note of it as it may prevent takeoff as the picture below shows.

        Screenshot 2025-09-08 153239

      If it has been confirmed that all arms are locked and securely fastened, and this is a sensor issue.

      Then follow the steps below to get drone ready to take off.

       

      3. Attempt to Spin Up the Drone.

      • If the arms are locked and fastened select 'Confirm fastened' as shown in the picture above.

      • Next attempt to spin up propellers for take off by pulling both your sticks on the RC down and in as shown in the video.
      • If needed to shut down the propellers pull the left stick back and hold for a few seconds.

      • Monitor the drone for any unusual behavior during this process.


      Cautionary Notes

      • Always ensure that the drone is in a safe environment before attempting to take off.

      • Be aware of your surroundings and avoid obstacles during the takeoff process.

      Tips for Efficiency

      • Regularly check and maintain the drone's sensors to prevent issues during takeoff.

      • Familiarize yourself with the controller's functions to react quickly in case of emergencies.

       

       

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