HEX here3, Manual, Page: 10 / 18

Now load PX4 firmware into the autopilot. Connect the 4pin CAN connector from Here3 to CAN1
or CAN2 port on autopilot. Connect to the autopilot and set the parameter "UAVCAN_ENABLE" to
"Sensor Automatic Config". The Here3 will now work.
3. LED Meanings (with ardupilot firmware) ：
Flashing red and blue: Initializing gyroscopes. Hold the vehicle still and level while it initializes the
sensors.
Flashing blue: Disarmed, no GPS lock found.
Solid blue: Armed with no GPS lock.
Flashing green: Disarmed (ready to arm), GPS lock acquired.
Fast Flashing green: Same as above but GPS is using SBAS.
Solid green - with single long tone at time of arming: Armed, GPS lock acquired. Ready to fly.
Double flashing yellow: Failing pre-arm checks (system refuses to arm). Please check pre-arm
error message.
Single Flashing yellow: Radio failsafe activated.
Flashing yellow - with quick beeping tone: Battery failsafe activated.