Introduction

Unitree's new upgrade interactive bionic quadruped robot Go2 has 12 degrees of freedom (composed of 12 aluminum alloy precision joint motors) and employs force-control technology to provide composite control of force and position for each joint, in order to achieve force-control of the whole machine to achieve excellent motion performance. The whole robot is made of aluminum alloy and high-strength engineering plastics, which greatly improves the stability and reliability of the machine dog; the maximum running speed can reach 5m/s (measured in the laboratory) Equipped with 4D LIDAR L1 with 360°×90° hemispherical super wide-angle sensing, which can help Go2 to achieve no blind area coverage. It reaches the leading level at home and abroad both in terms of structure, motion performance, environment perception, and side following.

Parts Name

Untitled

Specifications

		$\color{black}\colorbox{F5B464}{AIR}$	$\color{black}\colorbox{F5B464}{PRO}$	$\color{black}\colorbox{F5B464}{EDU}$
Mechanical Specifications	Dimension of Standing	70x31x40 cm	70x31x40 cm	70x31x40 cm
	Dimension of crouching	76x31x20 cm	76x31x20 cm	76x31x20 cm
	Weight (with battery)	~ 15 kg	~ 15 kg	~ 15 kg
	Material	Aluminum alloy + High strength
engineering plastic	Aluminum alloy + High strength
engineering plastic	Aluminum alloy + High strength
engineering plastic
Electron Parameter	Voltage	28V~33.6V	28V~33.6V	28V~33.6V
	Peaking capacity	~ 3000W	~ 3000W	~ 3000W
Performance Parameter	Payload	~ 7kg (Max ~10 kg)	~ 8kg (Max ~10 kg)	~ 8 kg (Max ~12 kg)
	Speed	0~2.5 m/s	0~3.5 m/s	0~3.7 m/s
(Max ~ 5m/s)
	Max climb drop height	~ 15 cm	~ 16 cm	~ 16 cm
	Max climb angle	30 degrees	40 degrees	40 degrees
	Basic computing power	❌	8-core high-performance CPU	8-core high-performance CPU
Knee joint Parameters	Max Torque [1]	❌	~ 45N.m	~ 45N.m
	Aluminum knee joint motor	12 set	12 set	12 set
	Range of Motion	body: -48 ° ~48°
thigh: -200° ~90°
shank: -156° ~-48°	body: -48 ° ~48°
thigh: -200° ~90°
shank: -156° ~-48°	body: -48 ° ~48°
thigh: -200° ~90°
shank: -156° ~-48°
	Intra-joint circuit (knee)	✅	✅	✅
	Joint Heat pipe cooler	✅	✅	✅
Force sensor Parameters	Super-wide-angle 3D LIDAR	✅	✅	✅
	Wireless Vector Positioning Tracking Module	❌	✅	✅
	HD Wide-angle Camera	✅	✅	✅
	Foot-end force sensor	❌	❌	✅
Feature List	Basic Action	✅	✅	✅
	Auto-scaling strap	❌	✅	❌
	Upgraded Intelligent OTA	✅	✅	✅
	RTT 2.0 image transmission	✅	✅	✅
	Graphical program	✅	✅	✅
	Front Lamp	✅	✅	✅
	Wi-Fi with Dual band	✅	✅	✅
	Bluetooth 5.2/4.2/2.1	✅	✅	✅
	4G module	❌	✅	✅
	Voice Function	❌	✅	✅
	ISS 2.0 Intelligent side-fellow system	❌	✅	✅
	Intelligent detection and avoidance	✅	✅	✅
	Charging Pile Compatibility	❌	❌	✅
	Secondary development	❌	❌	✅
Accessories	Manual Controller	Optional	Optional	✅
	High computing power module	❌	❌	Nvidia Jetson Orin (Optional) (40 -100 Top computing power)
	Smart battery	Standard
(8000mAh)	Standard
(8000mAh)	Long endurance
(15000mAh)
	Battery life	~ 1-2hr	~ 1-2hr	~ 2-4hr
	Charger	Standard
(33.6V 3.5A)	Standard
(33.6V 3.5A)	Standard
(33.6V 9A)

1. Status Indication

Go2's head indicator light can emit different lights to show the current working status of the robot and the current operating system, please refer to the following table to learn more about the operating status indicated by different flashing modes and colors:

Color	Color and Flashing	Meaning
Flash ✳️	Flash in green	Switching on
🟢	Permanently on in green	Powered on, default obstacle avoidance on
🔵	Permanently on in blue	Obstacle avoidance closure
🟡	Permanently on in yellow	Range mode
🟣	Permanently on in purple	Accompanying mode on state
Low flash 🔵	Low flash rate in blue	Motor & IMU calibration in progress
Low flash ☀️	Low flash rate in yellow	Low battery warning will automatically crouch down within 10 minutes.
Low flash 🔴	Low flash rate in red	System abnormality, boot failure, hardware failure, need to contact after-sales service.

Fast flash 🔴	Fast flash rate in red	Motor & IMU calibration failed
⚪	Permanently on in white	Head indicator light.

<aside> 💡 Light priority: companion mode on (purple light always on)>endurance mode (yellow light always on)> obstacle avoidance off (blue light always on)

</aside>

2. Intelligent Avoidance

Equipped with Unitree's self-developed 4D LiDAR Ll with 360°p° hemispherical ultra-wide-angle perception, boasting ultra-low blind spot, the minimum detection distance is as low as 0.05m, which can help Go2 to achieve a blind spot-free coverage, real-time access to three-dimensional information about the surrounding environment, and in the process of travelling according to the radar data to carry out intelligent avoidance (only support forward obstacle avoidance), to avoid collision and ensure the safety of the robot and the surrounding environment.

3. Intelligent Side-follow System 2.0 (ISS2.0) (Not supported by AIR)

By adopting the new wireless vector positioning and control technology, the positioning accuracy is technically upgraded by 50%, the remote-control distance is over 30m, and combined with the optimized obstacle avoidance strategy, it can make the robot better traverse complex terrain.

4. Voice Interaction (Not supported by AIR)

Supports voice interaction and commands and built-in voice recognition module and converts human language into computer language to communicate with the main chip, so as to control the robot and achieve human-machine language interaction. Reaches voice interaction response at millisecond level, using the industry's advanced voice recognition technology with high recognition accuracy, fast literacy.

5. App remote image transmission

With the new Unitree Go App, it provides omni-directional ultra-wide image transmission, Realtime viewing of shooting images, built-in 4G and eSIM (not supported by AIR) for more stable connection and remote control. Its intelligent OTA upgrades, which makes the operation in ultra-vision range as simple and convenient as being in the field.