Flight Execution

What to expect

Pilots can launch the drone manually and then press “FLY” or start a mission from the ground. We recommend starting missions from the ground. Once you press FLY, the Spexi App starts sending commands to the drone, and the autonomous mission begins. The drone will ascend (or descend, if the drone is already in flight and above the starting mission altitude) to mission altitude, and then begin following the flight path displayed.

Terrain Following

Missions are designed to maintain a standard altitude above ground level (AGL) and will follow the local terrain up or down accordingly. This may mean that you need to increase your max altitude ceiling in the DJI Fly App for terrain increases. Alternatively, you may need to move to a lower take-off point if the mission path would drop the AGL height below the take-off point.

Spexigon displaying changing flight path altitudes for terrain Following

Spexigons are preset to be flown at an altitude of 80m AGL (Above Ground Level) and always have Terrain Following activated. When you see your altitude changing during flight, don't worry, that's your drone following the terrain and keeping itself at 80m AGL at all times. 👍🏼 🚁

Common errors & troubleshooting

Here are some common errors that pilots may encounter, and some tips on how to address them.

Drone not connecting

• Make sure you have a phone based controller with the Spexi App running on an Android device

• Make sure the DJI Fly App is closed (you may need to remove “auto-open” permissions from the DJI Fly App).

Too Far from the Home Point

• The app uses the home point to calculate the AGL of the drone, if you have moved too far from the home point without updating it, you may need to land the drone and update the home point to reset the altitude calculation.

Camera Error

• Ensure camera settings are on Auto in DJI Fly, and that the DJI Fly App is closed

Drone stopped mid mission

• Check your max altitude in the safety settings of the DJI Fly App.

• Ensure your firmware is up to date, check for legacy geofencing

Move to a lower altitude

• Standard mission altitude is 80m AGL, if there is significant terrain relief (altitude drop) within a zone, the DJI safety parameters will not let the drone descend below the home point. You’ll need to launch from a lower location within the zone, in order to start the mission.