HEX here3 - Pinout and Connections; Configuration; Ardupilot Firmware Setup

Pin Definition Cable Colour
1 VCC_5V Red
2 CAN_H White
3 CAN_L Yellow
4 GND Black
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Pinout
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Configuration
1. Using Ardupilot Firmware：
Using one Here3：
Connect the 4pin CAN cable connector to CAN1 or CAN2 port on flight controller.
power the flight controller and connect it to Mission Planner. Go to "Config/Tuning > Full
Parameter List" and modify the following paramters:
CAN_D1_PROTOCOL: 1
CAN_D2_PROTOCOL: 1
CAN_P1_DRIVER: 1
CAN_P2_DRIVER: 1
GPS_TYPE: 9
NTF_LED_TYPES: 231
Click "Write Params" when done. CAN functions will be available after rebooting the flight
controller.