Pixhack LED status lights (RGB three-color status lights)
Red and blue alternately flashing: Initialize the sensor, please balance the autopilot board
Blue flashing: locked state (satisfaction with auto-steady mode unlockable condition), but GPS has not yet succeeded in 3D FIX. If the autopilot mode requires GPS positioning, it will Failed to arm.
Blue is always on:The Autopilot have been Arm but no GPS
Flashing green: The Autopilot have been Arm (and meets unlockable conditions), GPS is also 3D FIX locked.
Fast flashing green: Search for high-precision SBAS GPS satellites. The Autopilot the locked state (and satisfies the unlockable condition), GPS is also 3D FIX.
Green is always on - The buzzer emits a long beep: The aircraft is unlocked and ready to take off
Double flashing yellow light: Unsuccessful arm (check Pre-Arm error message)
Flashing yellow alone: Failsafe activated
Yellow blue flashing: - High - High - High (low buzzer) (dah-dah-dah-doh): GPS fault or GPS failsafe activation
Red yellow flashing: disable Kalman filter or inertial navigation (error)
Purple yellow flashing: barometer fault
Solid red: Hardware error. Usually no TF card (reinsert TF card or replace), MTD device or IMU sensor is detected. You can view boot directory information for BOOT.txt.
Steady red, SOS sound: SD card lost or SD card format error After the power is turned on, no lights are on. Firmware/firmware lost; SD card lost or SD card malformed (ac3.4 or higher firmware)