Walker S1 vs D7: Humanoid Robot Comparison

Compare Walker S1 and D7 humanoid robots on design, mobility, sensors, AI, battery, and use cases.

The Walker S1 by UBTECH Robotics is a humanoid robot designed primarily for industrial and research applications, with a strong market presence in manufacturing and logistics. It is distinguished by its robust design, advanced balance-assisted walking, and integration with Linux-based OS and ROS 2, making it well-suited for complex autonomous and teleoperated tasks. Its key differentiators include force-compliant drive joints and a hybrid rigid-flexible coupling system aimed at stable mobility on various terrains.

The D7 by Pudu Robotics is also a humanoid robot targeting similar sectors such as manufacturing, logistics, and remote operations, with an estimated price comparable to Walker S1. It stands out for its semi-humanoid design with bionic arms and an advanced omnidirectional chassis enabling 360° movement and higher mobility precision. The D7 offers a battery life of 3-5 years and is optimized for tasks requiring dexterity and fluid motion, supported by a Linux-based OS and ROS 2.

Detailed Analysis

Trade-off: +1 each
D7

Design & Build Quality

Trade-off

Both robots share identical height and weight specifications (170cm tall and 50-80 kg). The Walker S1 employs a hybrid rigid-flexible coupling system enabling stable walking on mobile production lines and various terrains, emphasizing robustness for industrial settings. In contrast, the D7 features a semi-humanoid upper body with bionic arms and an omnidirectional chassis enhancing dexterity and allowing 360° movement, favoring precision in maneuvering tasks.

D7: +2
D7

Mobility & Navigation

Winner 🏆 D7

Walker S1 and D7 both achieve walking speeds between 1.5 and 3 m/s and utilize balance-assisted walking. They share navigation capabilities including Visual SLAM and LiDAR mapping for spatial awareness. However, D7's omnidirectional chassis allows it to navigate obstacles with greater flexibility and handle slopes up to 10°, which may offer superior maneuverability in confined or complex environments.

Trade-off: +1 each
D7

Sensors & Perception

Trade-off

Sensor arrays on both robots are highly comparable, including RGB cameras, depth cameras, LiDAR, IMU, force/torque sensors, gyroscopes, accelerometers, and joint encoders. This comprehensive sensor suite supports advanced perception and environment mapping, enabling both robots to perform autonomous navigation and interaction with their surroundings effectively.

Walker S1: +2
Walker S1

AI Capabilities

Winner 🏆 Walker S1

Both robots support teleoperation, autonomous operation, and learned behaviors, facilitated by Linux-based operating systems and ROS 2 support. They include Python SDKs that enable customization and integration of AI algorithms. Walker S1 additionally incorporates powerful onboard computing hardware (Intel i7 and NVIDIA AGX Orin) delivering high AI performance, which may provide an edge in processing complex tasks and real-time decision making.

Trade-off: +1 each
D7

Battery & Power Efficiency

Trade-off

Battery information for Walker S1 is not publicly disclosed, limiting direct comparison. D7 offers a battery lifespan of 3-5 years, with an estimated capacity exceeding 1 kWh supporting over 8 hours of operation per charge, suitable for extended shifts. This suggests D7 may currently have a more defined and possibly longer operational endurance profile.

D7: +2
D7

Use-Case Suitability

Winner 🏆 D7

Both robots are positioned for manufacturing, research, logistics, infrastructure inspection, and remote operations. Walker S1 is notably adopted in automotive production lines (e.g., BYD, Dongfeng), emphasizing industrial training and complex assembly tasks. D7’s enhanced mobility and dexterity make it suitable for precision-demanding environments such as healthcare, retail, and tasks involving item transport and sorting.

Trade-off: +1 each
D7

Safety Features

Trade-off

Safety features are aligned between both robots and include force limiting, collision detection, emergency stop, and redundant sensors. These measures ensure safe operation in human-centric environments and mitigate risks during teleoperated or autonomous activities.

Trade-off: +1 each
D7

Software Ecosystem

Trade-off

Both Walker S1 and D7 operate on Linux-based OS with ROS 2 support, facilitating integration with robotic middleware and AI frameworks. The availability of Python SDKs on both platforms enables developers to tailor functionalities and deploy learned behaviors, supporting flexible application development across industries.

Analysis Score Summary

Total Score

7

Walker S1

VS

Based on Detailed Analysis

Total Score

9

D7

📊 Win: 2 points | Trade-off: 1 point each

Scores are summed across every insight: a clear winner earns 2 points, while balanced trade-offs give each robot 1 point. The total reflects how often each robot outperforms the other (or shares the spotlight) throughout the detailed analysis sections.

Specifications Comparison

SpecificationWalker S1D7
Carrying Capacity15 kg per arm (Stationary); 15 kg (Total while walking)10 kg per arm
Deadlift Capacity50-100 kg50 kg
Degrees of Freedom41 DoF30
Autonomy LevelFully Autonomous (Goal-based with BrainNet coordination)Semi-autonomous to fully autonomous
PriceUSD 50,000 – 150,000 (Approx. for enterprise deployment; research-grade variants)USD100,000 - USD150,000-Based on pricing of similar models of Pudu Robotics
Weight76 kg (167.5 lbs)50-80 kg
Max Speed5.0 km/h (Running); Stable Walking: 3.0 km/h7.2 km/h (2 m/s)
Runtime3-5 hours3-5 hours
Battery Pack2.0 kWh to 3.0 kWh (High-density Lithium-ion).3-5 kWh, 48V LiPo
Dimensions172 cm (H) x 55 cm (W) x 38 cm (D)170cm x 55cm x 38cm

Showing 10 of 54 specifications

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Disclaimer

All content, comparisons, and verdicts on this website are based on our research, testing, and opinion. While we strive for accuracy, we do not guarantee the completeness, reliability, or suitability of any information. Performance, specifications, and results may vary depending on usage and conditions. This website and its authors are not responsible for any decisions, actions, or outcomes based on the information provided. Always verify product details with the manufacturer before making purchase or operational decisions.