Herelink Overview

Herelink is an integrated remote controller, ground station and wireless digital transmission system designed to be used with the Cube Autopilot, Ardupilot or PX4. Herelink allows RC control, HD video and telemetry data to be transmitted upto 20km between the ground station and air unit, the Herelink remote controller features custom Solex TX and QGC applications and both air unit and ground station feature an integrated 8 core SOC for custom application development.

Herelink 1.1 is based on the original platform and functions of Herelink 1.0. The controller improved the display brightness up to 1000 nit. Moreover, an additional Ethernet interface is available on airunit1.1 to support more peripheral devices and adapt to more applications, a SD card slot is available on the airunit 1.1.

Note: Please use the latest version of flasher_win to upgrade your HereLink1.1 controller and HereLink1.1 airunit firmware. (https://docs.cubepilot.org/user-guides/herelink/herelink-user-guides/upgrading-firmware#download-firmware-upgrade-application)

HereLink / HereLink 1.1 Technical specifications

1. Airunit and Controller

Processor	SoC – Pinecone S1
SOC	4 *Cortex A53, 2.2GHz / 4 * Cortex A53, 1.4GHz
GPU	4 Core, Mali-T860
SDR	A7 + DSP
Menory	Airunit LPDDR3 1GB | Controller LPDDR3 2GB
Storage	Airunit EMMC: 4GB|Controller EMMC：8G
Transmission Distance	FCC 20km | CE / SRRC / MIC 12km
Video Delay	110 ms
Image resolution	720p@30fps | 1080p@30/60fps
Frequency Band	2.4GHz ISM
Receive sensitivity	-99dBm@20MHz BW
Recovery	< 1s

2. Controller

Case Material	Plastic
Weight	(herlink1.0) 516g（Including 2 antennas) | Here Link 1.1: 536g
Size	217×106.5×31mm (not include external antennas and joy-sticks)
Screen	5.46 inch，1080P，16 million colors, capacitive touch screen
Screen brightness	Herelink1.0 :600nit | Herelink 1.1 :1000nit
Audio	Built-in speaker × 1, built-in microphone × 2
Remoter	Hall affect gimbals with removable sticks x 2, scroll wheel × 1, bottom button × 6 with backlight, top button × 1 (right)
Wireless Communication	Bluetooth / WIFI / GPS / 2.4G map transmission ground
Indicator light	tricolour LED *2 (Up right and left corner)
Interface	MicroUSB × 1, Micro SD × 1 (supports maximum 64GB)
External Antenna	Directional antenna (5dBi) *1 detachable ，omnidirectional antenna(2dBi) *1 detachable
Build-in Antenna	built-in wifi antenna, built-in GPS antenna, external GPS antenna interface x 1
Power	Build-in 4950 mAh Lipo Battery
Charging	Support micro USB port 5v 2A current charging
Power Consumption	The average power consumption does not exceed 4W (only picture transmission work, medium screen brightness, WiFi off, GPS off)

3. Airunit

Airunit1.0

Case Material	Aluminum Alloy
Weight(antenna included)	Herlink 1.0 ：95g
Size	78.5×30×15mm
Signal Bandwidth	20MHz / 10MHz
Power Consumption	The average power consumption does not exceed 4W
Micro HDMI 1	Camera video signal input (Recommend)
Micro HDMI 2	Camera video signal input
Power Input	Recommended supply voltage 7V: minimum 6V, maximum 12V and avoid sharing BEC with servos
UART Interface	3.3V UART
S.bus Interface	Dual RCout ，S.bus1 and S.bus2
Micro USB	Used for debugging and upgrading, support OTG mode**（need external power for USB device）**
Buttom	Used for pairing and state reset
Indicator light 1 ，2	Used to indicate state for pairing and video transmission
MMCX antenna jack 1，2	Used for signal transmission and ground communication

Airunit1.1

Case Material	Aluminum Alloy
Weight(antenna included)	Herelink 1.1: 98g
Size	78.5×30×15mm
Signal Bandwidth	20MHz / 10MHz
Power Consumption	The average power consumption does not exceed 4W
Micro HDMI 1	Camera video signal input (Recommend)
Micro HDMI 2	Camera video signal input
Power Input	Recommended supply voltage ~7V: minimum 6V, maximum 12V and avoid sharing BEC with servos
UART Interface	3.3V UART
S.bus Interface	Dual RCout ，S.bus1 and S.bus2
Micro USB	Used for debugging and upgrading, support OTG mode**（no need external power for USB device）**
Buttom	Used for pairing and state reset
Indicator light 1 ，2	Used to indicate state for pairing and video transmission
MMCX antenna jack 1，2	Used for signal transmission and ground communication
SD Slot（only supported by Airunit 1.1）	For future usage
ETH Interface（only supported by Airunit 1.1）	Network protocol device access

4.Airunit Interface Specification

(Airunit1.0 & Airunit 1.1)

Power：

Pin #	Name	Description
1	Power	Power IN，7V - 12.6V max（3s Lipo supported）
2	GND	Ground pin

UART：

Pin #	Name	Description
1	RXD	RX of air module，3.3V TTL
2	TXD	TX of air module，3.3V TTL
3	GND	Ground pin

S.bus ：

Pin #	Name	Description
1	S.bus out 1	RX for control signal
2	GND	Ground pin
3	S.bus out 2	RX for Gimbal signal
4	GND	Ground pin

ETH（only supported by Herelink 1.1）：

Pin #	Name	Description
1	TX+	AUTO MDIX
2	TX-	AUTO MDIX
3	GND	Ground pin
4	RX+	AUTO MDIX
5	RX-	AUTO MDIX

Accessories

1. HereLink Airunit *1

2. HereLink Controller *1

3. Omnidirectional antenna *1

4. Directional antenna *1

5. Airunit antenna *2

6. Joy-stick *2

7. HDMI cable *1

8. Power cable *1

9. Telemetry cable *1

10. S.bus cable *1

11. USB cable *1

12. Back board *1

13. M1.6x16mm（Fan screw）*5

14. M1.6（Fan Nut）*5

15. Washer（Fan washer）*5

16. O-ring（Fan O-ring）*20

17. M1.6x3mm（Airunit case screw）*5

18. M3x10mm（Back board mounting screw）*3

19. M3 Nut（Back board mounting nut）*3

20. Fan*1（available in Herelink1.1）

AirUnit LEDs

LED1：

Solid Green Light : Receiving HDMI 1 Signal

Solid Red Light : Receiving HDMI 2 Signal

Solid Yellow Light : Receiving flight control data signal

Geen and Red light flickered alternately : Receive 2 video stream signal

Geen Yellow, and Red light flickered alternately : Receive 2 video stream signal and flight control signal

No Light : Receiving no valid video signal or flight controller signal

LED2：

Geen light flickered : Pairing

Solid green light : Receiving valid control signal and power is normal

Solid Yellow light : Unpaired/no valid signal received

Red light flickered : Unstable power

No Light : Airunit is not powered

Pair / Reset Button：

Controller pairing and Enter upgrade mode

Button and LEDs

Button：

Upper Left Wheel	Control gimbal (configurable)
Upper Right Button	Take photo (configurable)
Upper Right Button	Configurable
Button B	Configurable
Power Button	Power on/off and unlock screen
Home Button	Return to Land options (configurable)
Button C	Configurable
Button D	Configurable

Leds（Left）：

Flashing Red	Critical battery power
Solid Red	Low battery power
Solid Yellow	Medium battery power
Solid Green	Sufficient battery power