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The BlueFlyVarios are flight instruments for measuring vertical speed and altitude based on atmospheric pressure. They measure the atmospheric pressure 50 times every second, with a resolution that enables the measurement of tiny altitude differences.

  • An MS5611 pressure sensor provides an ultra responsive altitude resolution of 10 cm.
  • The onboard audio mode provides a backup when not connected, or to use all the time.
  • Choose a version to connect via bluetooth to Android using SPP for use with flight software, or a version to connect via TTL UART for hacking into other hardware devices


Flight instruments are awesome devices to help you know the air. Even the best components are pretty cheap and the instruments should be too. The BlueFlyVario helps drive innovation in free flying sports using open hardware and sofware. The BlueFlyVario project grew from a not for profit hobby that got out of control. This philosophy continues to drive and motivate the future development of free flight instruments