Hardware Introduction

AlphaBot 2 is a wheeled dual-arm humanoid robot from AI² Robotics’ AlphaBot series, powered by the embodied foundation model — Alpha Brain. It features exceptional spatial intelligence and strong learning capabilities, enabling it to quickly adapt to new environments and flexibly perform a wide range of human-like tasks.

Overall Structure and Parameters

AlphaBot 2 has a total of 22 degrees of freedom (excluding end effectors). The legs adopt a three-joint folding lifting structure with waist yaw, each robotic arm has 7 degrees of freedom, the neck supports 2 degrees of freedom (pitch and yaw), and the chassis is driven by two-wheel differential drive.

Category	Name	Specification
Basic Parameters	Height	1800mm
	Weight	135kg (standard configuration)
	Computing Module	NVIDIA Orin AGX 64G
	Battery Life	4~6h
	Battery	48V 30Ah
	Full Body DOF	22 (excluding end effectors)
	Robotic Arm DOF	7 (single arm)
	Single Arm Span	723mm (excluding end effectors)
	Rated Payload	4kg (single arm)
	Working Space	0~2.3m
	Moving Speed	0.1m/s~1.5m/s
	Slope	0°~5°
Hardware Parameters	Head, Chest, Back Cameras	Realsense D435
	Hand Cameras	Realsense D405
	Chassis Drive Method	Two-wheel differential
	End Effectors	Dexterous hand / Gripper / Other tools
	Voice Module	MIC array: linear MIC*4
	Screen	Interactive display screen
	Debugging Ports	USB3.0*1; HDMI*1; RJ45*1
	Emergency Stop Device	Emergency stop on the back
Operating Environment	Temperature	5℃~40℃
	Humidity	10~80%RH

Component Functions and Specifications

This section provides detailed descriptions of the main hardware components of AlphaBot 2.

Vision System

1. The head, chest, and back of AlphaBot 2 are each equipped with a Realsense D435 camera, providing comprehensive visual perception. The Realsense D435 is an RGB-D camera capable of capturing real-time color and depth information (distance between objects and the camera), delivering critical data for functions such as object recognition and human-robot collaboration.

   

   Name	Specification
   Stereo Baseline	50mm
   Depth Sensor Technology	Global Shutter
   Depth Field of View	87°×58°
   Max Depth Resolution	1280×720 @ 30fps
   Z-axis Accuracy Error	<2% (at 2m)
   RGB Sensor Technology	Rolling Shutter
   Maximum RGB Resolution	1920×1080 @ 30fps
   RGB Field of View	69°×42°
   Z-axis Minimum Distance	Approx. 28cm
   Ideal Working Range	0.3~3m
   Size, Weight	90×25×25mm, 72g

2. The ends of the left and right robotic arms are each equipped with a Realsense D405 camera, specifically used for close-range object recognition. The Realsense D405 captures real-time color details and spatial attitude information of target objects at close range, providing real-time visual guidance for end operations.

   

   Name	Specification
   Binocular Baseline	18mm
   Depth Sensor Technology	Global Shutter
   Depth Field of View	87°×58°
   Maximum Depth Resolution	1280×720 @ 30fps
   Z-axis Accuracy Error	<2% (at 500mm)
   RGB Sensor Technology	Global Shutter
   Maximum RGB Resolution	1280×720 @ 30fps
   RGB Field of View	87°×58°
   Z-axis Minimum Distance	Approx. 70mm
   Ideal Working Range	Approx. 70~500mm
   Size, Weight	42×42×22mm, 58g

Joint Motors

The zero position of the robot is shown in the figure below, where the rotation angle direction of the torso joint motor is shown in the figure.

Key joint parameters are provided in the following table.

Component	Name	Range of Motion	Reduction Ratio	2000rpm/Rated Torque	Peak Torque
Head	Neck Pitch Motor	-16°~13°	51	1.8Nm	3.3Nm
	Neck Yaw Motor	-90°~90°	51	1.8Nm	3.3Nm
Waist	Waist Yaw Motor	-90°~90°	101	30Nm	66Nm
	Waist Pitch Motor	-90°~30°	121	84Nm	207Nm
Leg	Knee Joint Motor	0°~148°	121	169Nm	436Nm
	Ankle Joint Motor	-58°~0°	121	169Nm	436Nm

Robotic Arms

AlphaBot 2 is equipped with a dual robotic arm system, each with 7 degrees of freedom, enabling flexible operation and diverse task execution. The robotic arms adopt high-precision servo motors and joint designs to ensure stability and reliability in various operating environments. The end effectors of the robotic arms can be replaced with dexterous hands, grippers, or other tools according to task requirements to adapt to different operating scenarios.

Specifications

The following table lists the main specifications for a single robotic arm.

Name	Specification
Degrees of Freedom	7
Joint Ranges	J1：-178°~178° J2：-25°~178° J3：-178°~178° J4：-130°~0° J5：-178°~178° J6：-70°~70° J7：-26°~120°
Effective Rated Load	4kg
Working Radius	723mm (excluding end effector)
Repeat Positioning Accuracy	±0.1mm
Six-Axis Force Range	200N/7Nm
Supply Voltage	DC 20~30V
Supply Current	20A
External Hardware Interfaces	Ethernet / RS485 / CAN
External Software Interfaces	Python, C, and C++

Function Description

Name	Description
Green Button	Drag teaching; press and hold to enter drag teaching mode.
Blue Button	Reproduce/zero; click to reproduce the drag teaching trajectory, press and hold to return to zero position.
Aviation Connector	Connects end effectors, such as grippers, dexterous hands, or suction cups.

Pin definitions for the aviation connector are as follows:

Pin Number	Wire color	Description
1	Yellow	RS485_A
2	White	RS485_B
3	Red	Digital interface 1 (DI1/DO1)
4	Black	Digital interface 2 (DI2/DO2)
5	Green	Power GND
6	Blue	Power output: 0 V/12 V/24 V, controllable by program

Chassis

The chassis adopts a two-wheel differential drive, enabling flexible movement and steering. The differential drive system controls the speed of the left and right wheels, allowing the robot to perform various motion modes such as forward/backward movement, turning, and in-place rotation, thereby meeting navigation requirements in complex environments.

Specifications

The following table lists the main specifications for the chassis.

Name	Specification
Drive Method	Two-wheel differential
Global Positioning Accuracy	±5cm
Width	505mm
Length	650mm
Payload	≤100kg
Speed	0.1m/s~1.5m/s
Auto-recharging	Supported
Battery Capacity	48V 30Ah
LiDAR	2D LiDAR, measuring range up to 25 m
RGBD Camera	1
Debugging Ports	RJ45, USB, HDMI
Software Interface	API

Functional Description

1. Chassis buttons or knobs.

   

   Name	Description
   Auto	Mode for autonomous robot movement. In this mode, tasks or task groups can be sent to the robot, which will automatically execute the pre-programmed combined commands. In this mode, the chassis status light is white.
   Manual	Mode for manually controlling robot movement. In this mode, the robot can be pushed, and the chassis status light is yellow.
   Maintenance	In this mode, the power of the overall motion module is cut off, the robot and integrated mechanism cannot be controlled to move, and the chassis status light is red.
   Power	Press and hold for 1.5s to power on or off the robot.
   Pause/Continue	When an abnormality occurs, press the Pause/Continue button, the robot will pause the current task, and the chassis status light will be white trailing flowing. When connected to the LAN Wi-Fi, press and hold this button, and the robot will broadcast the current IP address by voice.
   Reset	Short press to reset the robot to the previously recorded coordinate point. Long press to reset the robot to the preset initial reset point.
   Combination Button	Simultaneously long press the Pause/Resume and Reset buttons for 5 seconds to activate the robot’s hotspot (for connection by the chassis upper computer software), accompanied by a voice prompt.

2. Chassis external ports.

   

   Name	Description
   Charging Port	Connects the power adapter to charge the robot.
   CAN Debugging Port	When motor anomalies require inspection, remove the external CAN port cover. Use a CAN cable and CAN analyzer to view and adjust the status parameters of joint motors.

   Note

   The CAN debugging port is for maintenance and debugging purposes only. Operation is permitted only under the guidance of our company’s engineers. Do not attempt debugging without authorization.

Computing Module

AlphaBot 2 is equipped with an NVIDIA AGX Orin 64G as its computing module, providing substantial computational power to support intelligent decision-making and task execution in complex environments.

Name	Description
Control Board	NVIDIA AGX Orin 64GB
Operating System	Ubuntu 22.04 LTS

Rear Back

The rear back of AlphaBot 2 integrates external ports and an emergency stop device.

1. External ports: Remove the cover to access ports for expanding external devices.

   

   Port	Quantity	Description
   HDMI	1	Connects to a monitor or other video output device for convenient debugging and monitoring.
   USB 3.0	1	Connects external devices such as cameras or sensors, supporting high-speed data transfer.
   RJ45	1	Enables direct communication with the robot controller via an Ethernet cable.

2. Emergency Stop Device: Press the emergency stop button, the chassis will brake, and the robotic arm will stop moving; turn clockwise to release the emergency stop.

   

Power Adapter

AlphaBot 2 is equipped with a dedicated power adapter to provide stable power supply for the robot, ensuring its continuous operation in various operating environments.

1. Power adapter specifications:

   

   Name	Specification
   Size	235×120×70mm
   Weight	3.5kg
   Input Cable Length	1500mm
   Output Cable Length	1000mm
   Input	200~240V，50~60HZ
   Output	29.4±0.2V，20A±3%，700W

2. LED indicator status:

   

   LED	Color	Status
   LED1	Red	Powered on
   LED2	Red	Charging
   	Green	Fully charged

Charging Box

AlphaBot 2 is equipped with a dedicated charging box, providing a safe and convenient charging solution for the robot, ensuring its continuous operation in various operating environments.

Name	Specification
Size	180×530×460mm
Input Format	Single-phase three-wire (L/N/PE)
Input Voltage	220V
Frequency	45Hz~65Hz
Maximum Input Current	≤18A (depending on actual power)
Input Power Factor	≥0.99 (full load)
Output Voltage	48V
Output Current	0~50A
Voltage Regulation Accuracy	≤±0.6%
Measured Noise Voltage	<2mV
Peak-to-Peak Noise Voltage	≤150mV (20 MHz bandwidth)
Efficiency	≥90% (rated input, full load)
Working Temperature	-20°C~ 65°C (recommended 15°C~25°C)
Storage Temperature	-40℃~70℃
Relative Humidity	10%~90% (recommended 40%~60%)
Atmospheric Pressure	70kPa~106kPa
Site Requirements	No serious dust, explosive dangerous media, harmful gases that corrode metals and damage insulation, conductive particles and serious mold, and no strong electromagnetic interference around