- The surface can’t be too thin or be a reflective surface.
- Distance lock works for distances from the drone to a wall of between 0 and 2m (6.6 f).
- Distance lock works for camera pitch angles up to 10° UP and 5° DOWN.
- The distance is controlled in a range of +/ 0.5m around the setpoint distance.
- The drone will start to oscillate if you try to lock its distance on heavily concave surfaces, like those
found in tunnels.
4.10. Flight data logging and video recording
4.10.1. Data logging
AV SD CARD
The Avionics LOG files contain the flight information, such as sensor values, internal aircraft states, and
even controller inputs from the pilot. These files are the “black box” of the drone. This data can be
downloaded and sent to Flyability engineers to analyze malfunctions should they occur, but they are
not readable for the end user.
4.10.2. Video recording
Video recording starts as soon as ELIOS 3 is armed and stops when ELIOS is disarmed, provided that
the CAM SD card has enough free space. Video as well as still images are saved onto the CAM SD card.
4.10.3. LiDAR recording
LiDAR raw data is stored in a .bag file in the OBC. This data is needed for debugging and GeoSLAM
integration. The trajectory of the flight is saved in a .csv file, and the map is saved in an .las file as well as
in the OBC. Everything is handled transparently through the Inspector importation.
4.10.4. Tablet backup recording
The video stream received by the tablet can be saved to create a low-quality backup of the flight video
and telemetry data displayed on the cockpit app. This backup prevents a complete loss of data in case
of an accident and thus is very valuable for the Flyability customer support team.
This feature is on by default. A video file with the received video stream and with the telemetry data
will be saved on the tablet’s internal memory. Also, an .STN file is present as an extra backup. Older
flights are automatically overwritten to save storage space.
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