FlySight Android

An Android companion app for the FlySight 2 GPS skydiving/wingsuit computer. Connects over Bluetooth Low Energy to browse device files, download jump tracks, configure the device, and score competition runs.

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Screenshots

Main Screen	Track Details	Score Run

Compare Tracks	Device Settings

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Installation

1. Update FlySight 2 firmware

The app requires FlySight 2 firmware v2024.12.30.10 (released May 2026) or later. Older firmware versions do not enable Bluetooth. Full update instructions: https://flysight.ca/firmware/

2. Install the app

Download the latest APK from the Releases page and install it on your Android device. You may need to allow installation from unknown sources in your device settings.

3. Pair your FlySight

1. Power off the FlySight and disconnect it from USB.
2. Press the Power button twice — the device switches to Pairing mode and the LED begins to blink slowly.
3. Open the app and tap Scan to discover and pair with the device.

Once paired, the FlySight is always reachable over BLE whenever it is powered off and within range — no need to re-enter Pairing mode for subsequent connections.

Known limitations (Alpha)

• Battery level is not displayed. This is a firmware-side limitation and will be resolved in a future FlySight firmware update.
• File access requires the device to be powered off. The current firmware blocks SD card access while the device is active.
• Configuration is saved as DEMO_CFG.TXT, not CONFIG.TXT, to prevent accidentally overwriting your existing configuration. Once the generated output has been fully validated, this will change to write directly to CONFIG.TXT. In the meantime you can manually rename or copy the file — verify all settings before doing so.
• Score track results differ from desktop FlySight Viewer by ~0.1–0.2% (roughly 10 m in the distance score). The root cause is still under investigation.

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Features

Device Connection

• Scans for nearby FlySight 2 devices and displays already-paired devices
• Handles BLE bonding and pairing automatically
• Shows live battery level once connected
• High-priority BLE connection mode during file transfers for maximum throughput

File Browser

• Navigate the full FlySight 2 directory tree over BLE
• Download and view individual track files
• Delete files and folders directly from the app

Jump Track Viewer

• Downloads TRACK.CSV over BLE and parses GPS data
• Interactive line chart displaying:
  • Horizontal speed, vertical speed, total speed (km/h)
  • Elevation (m)
  • Glide ratio
• Tap any chart series header to toggle visibility
• Pinch-to-zoom and drag on the time axis

Run Scorer (PPC)

• Scores a competition Performance Piloting run between 2500 m and 1500 m AGL
• Displays time (s), distance (m), speed (km/h), and adjusted values after penalty
• Map view (OpenStreetMap) with:
  • Flight track from exit to 1500 m gate
  • Official scoring lane (semi-transparent fill, ±300 m from centre)
  • ±150 m and ±300 m penalty zone boundary lines
  • Lock-in, exit, 2500m and 1500m gate markers
  • Lane extended to 5 miles beyond the target
• Long-press map to set scoring target
• Penalty calculation: 0% / 10% / 20% / 50% based on cross-track deviation

Track Comparison

• Download two tracks and overlay them on the same chart
• Compare horizontal speed, vertical speed, total speed, and elevation side-by-side

Device Configuration

• Read and write the FlySight 2 configuration file over BLE
• Settings organised into collapsible sections (navigation, GPS, audio, alarms, sensors, etc.)

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Requirements

Requirement	Version
Android	8.0 (API 26) or higher
Target SDK	34 (Android 14)
Bluetooth	BLE required
FlySight firmware	FlySight 2

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Building

Prerequisites

• Android Studio Hedgehog (2023.1) or later
• JDK 17
• Android SDK with API 34 platform tools

Steps

1. Clone the repository

   git clone https://github.com/<your-org>/flysight-android.git
   cd flysight-android

2. Open in Android Studio File → Open → select the cloned directory

3. Build a debug APK from the command line

   ./gradlew assembleDebug

   Output: app/build/outputs/apk/debug/app-debug.apk

4. Install directly to a connected device

   ./gradlew installDebug

Gradle version

Gradle 8.10.2 — managed via the Gradle Wrapper (gradle/wrapper/). No separate Gradle installation is required.

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Permissions

Permission	Purpose
BLUETOOTH_SCAN	Discover nearby FlySight devices
BLUETOOTH_CONNECT	Connect, bond, and transfer data
ACCESS_FINE_LOCATION	Required by Android for BLE scanning; used for GPS map centering
INTERNET	Load OpenStreetMap tiles in the scoring map view

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Dependencies

Library	Purpose
MPAndroidChart	Track data charts
OSMDroid	OpenStreetMap scoring map
Kotlin Coroutines 1.7.3	Async BLE operations and UI state
AndroidX Lifecycle / ViewModel	State management across configuration changes
Material Design 3	UI components and dark theme