Connecting a BlueFlyVario (USB)
Updated: Please refer to our new connecting bluetooth vario page
In case your smartphone doesn't have a built in barometer or you simply don't want to use the built in barometer, you can connect an external device like the BlueFlyVario variometer via OTG cable with theFlightVario.
Attaching the BlueFlyVario
Turn on the BlueFlyVario* and start theFlightVario
attach the BlueFlyVario via OTG to your smartphone
click OK in the pop up window asking for theFlightVario to access the USB device
click OK in the small pop up window asking for the permission to use the BlueFlyVario variometer
Within the compass a BlueFlyVario logo will appear. Lift and sink as well as pressure values are now taken from the external variometer. You can set the responsiveness in the settings to very responsive. You might notice a small change in altitude which is related to barometers being quite precise but not necessarily accurate. Connection can be established anytime. Ideally it is being done before the altitude was set by GPS or mean sea level pressure received from a nearby weather station. You can always set altitude by adjusting the mean sea level pressure in the settings.
Detaching the BlueFlyVario
Simply pull the OTG cable from your smartphone and the smartphone will use the built in barometer again.