Sensors and fusion
- Pressure sensing
- Two independent barometers
- Measured improvement
- 26% cleaner pressure input in a stationary one-minute test
- Motion sensing
- Low-noise 6-axis IMU
- Processing rate
- 100 Hz sensor fusion
FLYSYS / DUOA PARAGLIDING INSTRUMENT
A change in pressure reveals movement in the air.
Hear the Invisible
A LITTLE LIFT. RIGHT HERE.
Give your next climb a listen.
Sound preview · Customise pitch, climb repeat timing and active thresholds.
LESS SCREEN
MORE SKY
MORE SKY
Clear audio feedback helps you follow the lift and focus on your flight.
Follow the sound.
Keep your eyes on the sky.
Make it personal.
Shape your climb and sink tones. Preview the sound, then save your settings to Duo in the FlySys app.
- Adjust the curve
- Listen to the change
- Save it to Duo
Two barometers. One clearer signal.
Dual core. One smooth experience.
Personalized. Tuned with ease.
Sensor architecture
Fast, stable and reliable feedback
Duo measures pressure with two independent barometers and combines their averaged signal with low-noise motion data at 100 Hz. Explore the same recorded movement processed by the two barometers, the complete FlySys Duo sensor fusion, and a simulated conventional pressure-only variometer.
The same movement, processed three ways
See how dual sensors and IMU fusion reduce noise compared with a classic variometer. This continuous simulation uses measured noise patterns and the same generated movement in every view.
FlySys Duo combines both barometers and then fuses their pressure signal with IMU data. The classic response remains visible in grey so its additional delay can be compared directly.
Duo Baro 1Duo Baro 2Duo combinedIMU-fusedClassic BaroClassic average
Duo Baro 1
+0.32 m/s
Duo Baro 2
+0.66 m/s
Duo combined
+0.49 m/s
IMU-fused
+0.41 m/s
Classic Baro
-1.69 m/s
Classic average
-0.20 m/s
Battery autonomy
Built for long flying days
Choose where your vario tones play, turn Bluetooth streaming on or off, and adjust the data rate, LED brightness and volume to see how each setup affects estimated flight time. The calculation uses the current 1050 mAh battery.
Choose where tones play
FlySys Duo plays the climb and sink tones.
Estimated autonomy
1 day 15 hours
Estimated with a full 1050 mAh battery
Bluetooth live data
Duo operates independently without Bluetooth streaming.
Higher rates update the phone more frequently and reduce autonomy.
20 samples/s
1020304050 samples/s
How this estimate works
Estimates use measured Duo consumption and approximate sound/LED additions, with a full 1050 mAh battery. Actual autonomy varies with flight conditions, temperature, battery age and usable capacity.
Estimates use measured Duo consumption and approximate sound/LED additions. Actual autonomy varies with flight conditions, temperature, battery age and usable capacity.
Technical specifications
FlySys Duo at a glance
Processing and reliability
- Processor
- Dual-core microcontroller
- Workload separation
- Dedicated sensor-processing and communication cores
- Fusion recovery
- Automatic after unreliable motion data
- Pressure fallback
- Continues with one healthy barometer
Power and audio
- Battery autonomy
- 1050 mAh scenarios compared above
- Charging
- USB-C
- Power management
- Adaptive processing and sleep between measurements
- Audio
- Efficient piezo buzzer with customizable tones
Connectivity and control
- Wireless
- Bluetooth Low Energy
- Wired
- USB-C data connection
- Applications
- FlySys Mobile and FlySys Desktop
- Device access
- Optional Bluetooth password protection