Cross-country flying: Waypoints navigation
Waypoints File Format
To use the navigation feature of your varduino variometer, a waypoint file must be present in the "wp" folder of the sd card. The file must have the extension .wpt. The first file only is imported.
Waypoints are imported at boot time. Your variometer will route you in the order they are listed in the file.
The waypoint file must comply to the Oziexplorer format and can be created and modified in Varduino Manager or from other sources.
Oziexplorer files comply with the following format:
- The first 4 lines are reserved and should be as in the picture.
- From line 5, one waypoint per line:
- Field 1: Waypoint number
- Field 2: waypoint name (max 8 char)
- Field 3/4: latitude and longitude in decimal degrees
- Field 7: always 1
- Field 15: Altitude in Feet
No other fields are imported or used by Varduino Manager and Varduino variometers.
Creation and modification of Ozi files in Varduino Manager
To create or edit Ozi files in Varduino Manager, go the waypoint tab.
One can directly interact with the map to create a route:
- Left click on the map to add a waypoint
- Right click on a waypoint to delete it.
- Left click in between waypoints (semi-transparent white circle) to insert a waypoint in between two existing waypoints.
Once the route is finished, click on "get route" to fill up the table with the list of waypoint coordinates. One can finally click on "export waypoints" and save the file in the "wp" folder of the sd card.
The default waypoint radius is 400m. It is possible to change this value by naming the waypoint file in the following manner: "waypoints-Xm. wpt" where X is the radius in meters (min: 1m, max 99999m). All waypoints will have the same new radius. For example:
- waypoints- 50m.wpt
Loading airspaces files
For the planification of XC flights, it is useful to be able to display airspaces. Varduino Manager can load openair files.
One can select airspaces categories and altitude thresholds by clicking the corresponding boxes.