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Compasses Inconsistent - This is caused from reading the Internal and External compasses as pointing in different directions. Reboot the drone. If the same pre-arm error continually appears, a compass calibration should fix this.
Pre-Arm: ESC Temp Over Threshold. False Reading Detected - This error occurs when temperatures are very cold. The values for the ESC temps range from 0-255 degrees Celsius. When the value is read as below 0 from the cold, it will cause a false reading that registers the ESC temps as maximum. This error appearing just confirms the drone has detected the false reading. Do not be alarmed by this error, as it will not alter the drone’s behavior and should have no impact on pending operations. If you see this, you may safely close the message box and continue.
Low Battery Failsafe RTL - This means the drones has calculated how far it is from home and how much battery it will take to get back to home safely. This sequence should never be cancelled unless in an emergency, in which case the drone should be landed immediately.
Gyros Not Healthy - Limited information regarding this error is present. Rebooting the drone should clear this error.
OpenDroneID: Arm Status Not Available (Lost Transmitter) - Occasionally you may encounter this on if the transmitter is not found quickly enough during boot. It may appear with several other temporary pre-arms or messages that often are present during the boot period while the drone initializes and acquires GPS lock. These other messages will clear but “Lost Transmitter” will still loop infinitely, with Lost transmitter will only be displayed once, and if the transmitter is found a message will appear in the alerts window (megaphone icon). “OpenDroneID: Arm Status Not Available” will be appearing every so often.
This happens as a result of a de-sync between the Remote ID transmitter and the controller, with the transmitter being the component which WISPRGroundControl cannot establish a connection with.
Presently the only known solution to this is to reboot the drone. While this almost never occurs in sequence, if you should find this happening consecutively, leave the drone unplugged for 3-5 minutes before rebooting. If you’re unable to get past this issue after 10+ reboots (should be rare) with time between attempts, there may be a problem with the transmitter.
OpenDroneID: Operator Location Must Be Set (Lost Operator Location) - This issue is twin to the “Lost Transmitter” error. This happens when the controller becomes desynced rather than the Remote ID transmitter. You will see this when you’re in a location that blocks GPS signal thoroughly enough that the controller’s location cannot be established.
This can usually be resolved by taking the controller outside if indoors (most applicable if inside a metal building). If that doesn’t solve your problem or you are already outside and encountering this, reboot WISPRGroundControl. Usually there should be no need to reboot the drone, but if the error persists after a few reboots of
WISPRGroundControl, reboot the drone.
If the problem
still persists, you may change
your location from
“High Accuracy” to “Device Only” by dragging the top of the screen downwards to expand the ribbon. Press and hold the
location “pin” icon, and change the selection to device only. You will need to exit
WISPRGroundControl and reboot the drone for this to take effect.
OpenDroneID: System Not Available
This message seems to sometimes occur when the controller location is not found during initialization, but then found afterward, or if the drone was connected to Mission Planner while WISPRGroundControl was booted. 95% of the time this can be solved by rebooting WISPRGroundControl and waiting for parameters to finish. The message should clear after a 5-10 seconds if not sooner. Alternatively, sometimes this message will clear on its own if left booted for a few minutes. If this persists, a reboot is necessary.