Bionic facial expression robot｜21 degrees of freedom｜3D printed structural parts｜Mobile joints｜Complete appearance

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Description

The robot head uses 21 actuators to achieve realistic movement of the eyes, eyebrows and mouth.

This is a high-degree-of-freedom bionic facial expression robot designed by open-source bionic robot expert Will Cogley. It focuses on high-simulation facial movements and DIY playability. It is the first choice for technology enthusiasts’ hard-core projects.

✨ Core configuration and parameters

DOF 21 facial DOF

Drive mode: Multiple sets of servos (servo motors) drive

Structural parts Fully 3D printed customized mechanical structure

Shell Complete 3D printed white outer helmet with LED ambient lighting

Accessories Servo cable, mechanical connectors, assembly screw kit, LED light strip

Applicable scenarios Robot DIY projects, technology exhibitions, maker education, desktop displays

🔧 Mechanical structure and sports performance

1. 21 degrees of freedom bionic motion system

• Eye system: The eyes independently realize horizontal rotation, vertical rotation, and blinking movements. With the movable upper eyelid structure, it can restore human blinking, gaze, eye tracking and other movements. The design of the yellow-bottomed iris makes the eyes more "vital".
• Linkage between eyebrows and facial muscles: the eyebrows can be raised/pressed independently, and combined with eye movements, to achieve micro-expressions such as frowning, raising eyebrows, and surprise; the facial mechanical structure supports linkage to simulate the stretching effect of facial muscles.
• Mouth and jaw structure: movable lower jaw + upper and lower teeth structure, supports opening and closing the mouth, simulated speaking/biting movements, and cooperates with the internal mechanical linkage to restore the natural mouth movement trajectory.

2. 3D printing customized structural design

• The main structural parts are made of high-precision 3D printing, perfectly replicating Will's open source design. The connecting rods and rotating shafts of each joint have been optimized to ensure smooth movement without lag.
• The structural parts adopt a modular design and can be disassembled, replaced or upgraded individually to facilitate subsequent modification and maintenance.
• The outer shell of the helmet adopts a split-piece design with screw fixing holes. After assembly, it completely wraps the internal mechanical structure.

Featured Highlights

Based on Will Cogley's open source bionic robot head design, it completely reproduces its mechanical movement logic, making it the first choice for low-cost experience with highly bionic facial robots.

The built-in RGB ambient light strip can present sci-fi lighting effects such as blue and purple gradients. When lit, the mechanical structure echoes the light, giving it a sense of technology and making it suitable for desktop displays or technology exhibition scenes.

The servo and control board (such as Arduino/ESP32) need to be matched by the user, and advanced functions such as expression control, voice linkage, and eye tracking can be realized through programming;

The structural parts support secondary modification, and modules such as silicone skin, cameras, and microphones can be added to create an exclusive and personalized robot;

Comes with complete assembly instructions, suitable for maker enthusiasts with a certain electronic foundation to build it.

The mechanical joints are fixed with screws + bearings, making the movement stable and not easy to loosen;

The edges of the outer helmet are smooth and burr-free to avoid scratches during assembly and display;

The servo cable uses standard DuPont connectors, which has strong compatibility and facilitates the replacement of servos of different specifications. 

What's included in the standard package

Fully 3D printed mechanical structural parts (including facial bones, joint rods, mandible, and eye brackets)

Complete 3D printed helmet shell (front and rear components)

Assemble screws, bearings, gaskets and other hardware accessories

RGB LED ambient light strip

Steering gear extension cable / Dupont cable

Assembly instructions + open source project information package (including CAD drawings, basic control sample code)

🎯 Applicable groups and expanded gameplay

Maker enthusiasts: Suitable as a robot DIY project to learn knowledge about mechanical structure, steering gear control, programming linkage, etc.;

Technology Exhibition/Popular Science Education: Used for popular science robotics, bionic engineering, 3D printing and other themed displays;

Advanced transformation players: It can be used with AI voice modules, cameras, and expression recognition algorithms to realize intelligent functions such as voice dialogue and expression interaction.