The Blue Fly Vario device (aka BFV) will be supported by the CdaCrr app for the 4.0 version. The exact model which may be used is the Bluetooth_USB_v12.2 one. It provides altitude with a +/-10 cm precision thanks to a MS5611 pressure sensor.
The BFV sends pressure data every 0.02s (50Hz) and battery level every 10 seconds.
An interesting link to read about this pressure sensor, with tests and some info about the light sensitivity of the sensor, fixed with neoprene it the BFV:
http://blueflyvario.blogspot.com/2017/02/pressure-sensor-anatomy.html
See in this video how to connect the BFV to CdaCrr app.
The BFV sends pressure data every 0.02s (50Hz) and battery level every 10 seconds.
An interesting link to read about this pressure sensor, with tests and some info about the light sensitivity of the sensor, fixed with neoprene it the BFV:
http://blueflyvario.blogspot.com/2017/02/pressure-sensor-anatomy.html
See in this video how to connect the BFV to CdaCrr app.
Known limitations (update 2022/08/25): The pressure sensor of the BFV is highly sensitive to wind gusts which impacts the altitude measurement. The CdaCrr app try to suppress the air speed dependence, but the result is far from perfect, and precise altitude is only available during calm wind days for the moment...
5 comments:
What improvement can we expect if we use this altimeter instead of the barometer of a Samnsung S4 ?
A more reactive live CdA and some others things: see my complete answer here
Bonjour Pierre,
How do you get raw altitude data from the Bluefly Vario ?
Thank you for your work!
Hello Antony, I reused/rewrote some parts of the source code of the BlueFlyVario_Android project (https://github.com/alistairdickie/BlueFlyVario_Android) into the CdaCrr app.
Merci pour cette réponse, c'est ce que je soupçonnais !
Post a Comment