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DJI Drone Doesn’t Accept K Values

When entering K values in the Advanced Settings in the Weight Sensor settings the numbers do not save or reset to different values after leaving the screen.

Cause:

  1. The weight module has gone bad.
    1. A bad weight module can cause the values to get deleted or change when you try to enter them on the drone.
  2. The spray module has gone bad.
    1. The spray module is the central module that controls all spraying related functions on the drone and if there is an error within the module it can cause the K values to be unable to save.

Diagnosing:

  1. The error occurs when you enter in your K values correctly and the numbers change or turn red when you reenter the screen.
    1. This can also be seen by the drone not being able to tare or calibrate the weight sensors.

Solutions:

  1. Replace the weight sensors.
    1. This is the most likely culprit when diagnosing this issue and a bad weight module will make the K values not enter into the system.
  2. Downgrade and Reupdate firmware on the aircraft.
    1. When the aircraft updates sometimes this can cause issues due to improper downloading. Downgrading and reupdating the firmware will redownload the newest firmware and quite often will fix software bugs.
  3. Replace the spray module.
    1. If the previous two solutions do not fix this issue that narrows it down to it being a physical issue within the spray module.
  4. For T30/T10, replace the weight collection board.

Conclusion:

The K values on the weight sensors are the preset amount the weight sensor is off so if you do not have the correct K values in your system or have not entered them after replacing the sensor it can cause your system to be off or not calibrate correctly.

 

 

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