GPS Altitude Relative To Ground

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OpenTX

Displays

  • Altitude above field

Auto Offset

Altitude sensors usually return a value relative to sea level. If you want the model’s altitude relative to where it took off from an offset needs to be calculated. OpenTX provides a way to do this automatically.

GPS Altitude Range

Sensor

  • Altitude sensor

Setup

  1. Turn on Tx
    screen-2016-06-23-130203
  2. Press MENU
    screen-2016-06-23-130211
  3. Long press PAGE
    screen-2016-06-23-130216
  4. Scroll down (-) until you locate “GAlt” or another altitude sensor
    screen-2016-06-30-172539
  5. Long press ENT and select Copy
    screen-2016-06-30-172602
  6. Scroll down untill you locate the copy “GAlt”
    screen-2016-06-30-172606
  7. Press ENT
    screen-2016-06-30-172624
  8. Rename the sensor to “GAl2”
    screen-2016-06-30-172655
  9. Scroll down to “Auto Offset” and check the box
    screen-2016-06-30-172725
  10. EXIT back to the TELEMETRY screen
    screen-2016-06-30-172854
  11. Scroll down (-) till you select “—” next to “Altutude” under “Top Bar”
    screen-2016-06-30-173615
  12. Long press “ENT”
    screen-2016-06-23-130922
  13. Scroll down (-) till you select Telemetry
    screen-2016-06-23-130928
  14. Scroll up (+) till you select the altitude sensor you want and press ENT
    screen-2016-06-30-173625
  15. EXIT out to the main screen
    screen-2016-06-30-173638
  16. Long press ENT
    screen-2016-06-30-173645
  17. Select “Reset…”
    screen-2016-06-30-173650
  18. Select “Reset Telemetry”
    screen-2016-06-30-173654
  19. The “GAl2” sensor will now display zero altitude
    screen-2016-06-30-173700