Which model BlueFly should I get?

The BlueFly models are designed for slightly different purposes. Which model you should get depends on:

  • What device you plan to connect it to; an android phone or tablet (with or without an internal GPS), an iPhone, aWindows PC, a Kobo, or perhaps you just plan to use the Bluefly as a standalone device.
  • How you plan to connect it; Bluetooth, USB-OTG, USB for desktop, or TTL-Serial.
  • What app you plan to run on the device; just the BlueFlyVario app for adjusting settings, xcsoar, XCTrack, FlySkyHy, LK8000, or other apps.
  • If you plan to hack the hardware on the BlueFly and experiment with adding other features or creating custom enclosures.
  BlueFlyVario_Bluetooth_USB_v12 BlueFlyVario_TTL_GPS_v12 BlueFlyVario_USB_v12
Product Page link link link
Release Blog Post with Assembly Instructions link link link
Bluetooth Output Yes (Dual Mode RN4677 for connecting to Android via SPP or iOS via BLE) No No
USB Serial Output Yes (On-board FTDI USB-Serial converter output over micro USB) No Yes (On-board FTDI USB-Serial converter output over micro USB)
TTL Serial Output Exposed No Yes (primary output for Kobo) No
Operating Voltage 3.3V 3.0V 3.3V
Included Battery Yes (750 mAh LiPo) No Yes (750 mAh LiPo)
Included GPS No (but can be added to U1) Yes – XA1110 No (but can be added to U1)
Included Enclosure Yes (Sky Blue Case) No Yes (Sky Blue Case)
Assembly Difficulty Easy Requires Soldering to Kobo Easy
Included Airspeed No (A MS4525DO differential pressure sensor can be added to the exposed I2C pins)
Pressure Sensor Yes (Ultra sensitive MS5611 protected with neoprene and updated 50 times per second – provides vario and altitude data)
On-board Audio Yes (Includes micro speaker with many audio settings configurable – includes configurable lift beeps, a sink alarm, and an audio buzzer)
Hardware Settings See the hardware settings manual for a full description of settings for each device.