An Android application built with Kotlin to scan, record, and export live workout data from Keiser M-Series bikes (using the M3i BLE protocol). The protocol itself is documented at https://dev.keiser.com/ (Explore Platforms > M Series Direct Communication)
Disclaimer: This project is an independent developer tool and is not an official product of Keiser Corporation. It is not affiliated with, maintained by, or endorsed by Keiser Corporation.
- Real-time BLE Scanning: Automatically identifies M-Series bikes via manufacturer-specific advertisement data.
- Live Workout Stats: Displays real-time cadence (RPM), power (Watts), gear, heart rate (BPM), distance, and caloric burn.
- Session Recording: Records workout data points throughout the session.
- CSV Export: Automatically generates and offers to share a CSV file containing all session data upon completion.
- Convenience:
- Prevents screen lock during active sessions.
- Intercepts back-press with a confirmation dialog to prevent accidental session termination.
app/src/main/kotlin/com/keiser/scanner/ble: BLE scanning and packet parsing logic.app/src/main/kotlin/com/keiser/scanner/ui: Android Activities and ViewModels for the dashboard.app/src/main/kotlin/com/keiser/scanner/data: Data models and CSV generation logic.
- JDK 17 or newer.
- Android SDK (API 36 supported).
- Physical Android Device: Required for BLE functionality.
- Open this project in Android Studio.
- Wait for the project to sync and click the Run button.
The app requires the following permissions to function correctly:
BLUETOOTH_SCAN&BLUETOOTH_CONNECT(Android 12+)ACCESS_FINE_LOCATION(Android 11 and below)WAKE_LOCK(To keep the screen on during workouts)
For details on how data is handled, please see PRIVACY.md.
This project is licensed under the MIT License - see the LICENSE file for details.
Developed with ❤️ for Keiser M-Series bike users.