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, a Windows 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.
| BlueFlyVario_Bluetooth_USB_v12.3 | BlueFlyVario_TTL_GPS_v12.2 | BlueFlyVario_Bluetooth_GPS_IGC_v12.3 | |
| Product Page | link | link | link |
| Release Blog Post with Assembly Instructions | link | link | link |
| Bluetooth Output | Yes (Dual Mode RN4678 for connecting to Android via SPP or iOS via BLE) | No | Yes (Dual Mode RN4678 for connecting to Android via SPP or iOS via BLE) |
| 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 – L96 | Yes – XA1110 |
| Included Enclosure | Yes (Sky Blue Case) | No | Yes (Sky Blue Case) |
| IGC Tracklog | Not on Bluefly – recorded by software on device. | Not on Bluefly – recorded by software on Kobo. | Recorded on memory on Bluefly, and can be also be recorded on software on device. |
| Assembly Difficulty | Easy, or can purchase Fully Assembled | Requires Soldering to Kobo | Fully Assembled |
| 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. |