Summary

 

Fourier N1 is the first fully open-source humanoid robot launched by Fourier Intelligence in April 2025. Standing 1.3 meters tall and weighing 38 kg, it features 23 degrees of freedom, a modular aluminum and polymer frame, and a complete resource package including design schematics, bill of materials, and assembly instructions. The N1 is part of Fourier’s “Nexus Open Source Ecosystem Matrix,” aimed at accelerating embodied AI development worldwide.

 

Editorial:

 

Fourier N1 redefines the entry point to humanoid robotics. Unlike proprietary platforms, the N1 offers transparent hardware, accessible documentation, and community-driven development. Its joint configuration supports agile movement, gesture articulation, and basic manipulation, making it ideal for education, research, and low-cost prototyping.

 

The robot’s structure blends aluminum alloy for strength and engineering plastics for flexibility. While its onboard software is basic, the open-source nature allows developers to integrate custom control stacks, simulation environments, and AI models. Fourier Intelligence’s goal is to create a shared foundation for embodied intelligence—similar to Linux for operating systems or GPT for language models.

 

With the N1, robotics teams can build, modify, and deploy humanoid systems without licensing barriers, enabling faster iteration and broader experimentation.

 

Specifications:

 

Dimensions & Build

- Height: 1.3 m  

- Weight: 38 kg  

- Design Intent: Open‑source humanoid platform for research, education, and embodied‑AI development  

- Construction: Modular aluminum + polymer frame with full open‑source schematics, BOM, and assembly instructions  

- Developer: Fourier Intelligence (Shanghai, China)  

- Production Status: Released April 2025 as part of the Nexus Open‑Source Ecosystem Matrix  

 

Mobility

- Locomotion: Full bipedal walking + dynamic running  

- Max Running Speed: 3.5 m/s  

- Capabilities:  

  - Stable walking and running  

  - 15°–20° slope climbing  

  - 20 cm stair traversal  

  - Stair walking without visual assistance  

  - Single‑leg standing  

  - Crawling with both hands  

  - High‑agility demonstrations (cartwheel, 360° jump)  

 

Note: No fall‑recovery timing or turning radius published.

 

Degrees of Freedom

- Total DOF: 23 DOF  

- Distribution: Head, torso, arms, waist, legs  

 

Actuation

- Actuator Type: Not published  

- Key Capabilities:  

  - High‑dynamic locomotion  

  - Gymnastic‑grade whole‑body coordination  

  - Reinforcement‑learning‑friendly control architecture  

 

Note: No joint torque or joint speed specifications published.

 

Manipulation

- Hands: Not specified (N1 demos often show locomotion‑focused tasks)  

- Capabilities:  

  - Basic object interaction (varies by configuration)  

  - Research‑grade manipulation support  

 

Note: No payload, grip force, or hand DOF breakdown published.

 

Perception & Sensors

Confirmed capabilities:

- Locomotion‑centric sensing for balance and dynamic control  

- Multi‑scenario adaptability (stairs, slopes, uneven terrain)  

 

Note: No camera resolution, depth sensor type, IMU specs, or tactile sensing published.

 

Compute & AI

- AI Systems:  

  - Supports reinforcement learning  

  - Supports imitation learning  

  - Designed for sim‑to‑real research  

- Capabilities:  

  - Dynamic locomotion  

  - Complex movement sequences  

  - Open‑source control stack for developers  

 

Note: No CPU/GPU/TOPS or onboard compute architecture published.

 

Battery & Power

- Runtime: 2+ hours (varies by configuration)  

 

Note: No battery capacity or charge‑time data published.

 

Connectivity

- Open‑source software stack  

- Developer‑friendly interfaces  

- Full resource package:  

  - CAD  

  - Schematics  

  - BOM  

  - Assembly instructions  

 

Note: No Wi‑Fi/Bluetooth/5G details published.

 

Applications

- Embodied‑AI research  

- Robotics education  

- Locomotion and control‑policy development  

- University and lab experimentation  

- Open‑source robotics collaboration  

- High‑agility locomotion studies (cartwheels, jumps, dynamic balance)  

 

Pricing

- Varies by configuration (DIY kits → full platforms)  

 

Fourier has NOT published:

 

Mobility

- Walking speed  

- Step height beyond 20 cm  

- Turning radius  

- Fall‑recovery time  

 

Manipulation

- Payload  

- Grip force  

- Joint torque  

- Joint speed  

- Hand DOF breakdown  

 

Sensors

- Camera resolution  

- Depth sensor type  

- Field of view  

- Microphone array  

- IMU specifications  

- Tactile sensing  

 

Compute

- Processor type  

- GPU / accelerator  

- TOPS  

- Memory  

- Real‑time control hardware  

- SDK/API availability  

 

Battery & Power

- Battery capacity  

- Charge time  

- Power draw  

 

Environmental Ratings

- Operating temperature  

- Humidity tolerance  

- IP rating  

 

Image:        

 

Company Source:

 

https://youtu.be/b94_W7JiR-8?si=EtyJ07KFtk10pFn1

 

Key News & Coverage:

 

https://youtu.be/2VkZGxSQ7rM?si=-Rmc2l73C-yZNbSs