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Mission Control displays telemetry from your flight controller in real time. Data flows through the MAVLink or MSP protocol at up to 10 Hz and is stored in ring-buffered Zustand stores, keeping memory usage bounded even during long flights.
Telemetry panel showing live flight data

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Telemetry Categories

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Position

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Power

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GPS

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Attitude

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EKF Status

The Extended Kalman Filter (EKF) estimates the drone’s position and velocity by fusing sensor data. Mission Control shows EKF health as colored bars: Green means good. Yellow is marginal. Red means the EKF is not converged, and the drone should not fly in GPS-dependent modes.

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Vibration

High vibration values (above 30 m/s/s) indicate mechanical issues. Vibration affects EKF performance and can cause flyaways. Check motor balance, prop condition, and mounting before flying.

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Telemetry Deck

The telemetry deck is a configurable panel that lets you choose which metrics to display and how they are organized. It supports four pages: Each page shows selected metrics as compact blocks with the current value and a mini sparkline.

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Sensor Health Grid

The sensor health grid shows the status of all connected sensors:
  • Gyro, Accelerometer, Magnetometer: Per-sensor health with individual status indicators
  • Barometer: Altitude consistency check
  • GPS: Fix quality and satellite count
  • Optical Flow: If equipped, flow quality indicator
  • Rangefinder: If equipped, altitude measurement status
Sensors that report errors or degraded performance are highlighted in yellow or red.

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Alert Feed

The GCS generates alerts based on telemetry thresholds:
  • Low battery warnings at configurable thresholds
  • GPS degradation when satellite count drops or HDOP increases
  • Failsafe triggers relayed from the flight controller
  • Fence breach alerts when the drone crosses a geofence boundary
  • EKF status changes from good to warning or error
  • Radio link degradation based on RSSI thresholds

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Freshness Indicators

Every telemetry value has a freshness check:
  • Fresh: Data received within the last 10 seconds. Displayed normally.
  • Stale: No update for 10-30 seconds. Values dim to indicate they may be outdated.
  • Offline: No update for over 30 seconds. Values show a disconnected state.
This prevents you from trusting old data during connection interruptions.

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Data Storage

Telemetry data is stored in ring buffers with fixed capacity. A 30-minute flight at 10 Hz produces about 18,000 samples per channel. Ring buffers automatically discard the oldest samples when full, keeping memory usage constant. For long-term storage, use the History tab which records flight logs that can be replayed later.