The Gravity: Offline Edge AI Gesture & Face Detection Sensor isdesigned for intuitive gesture control and multi-person presence detection. Equipped with an integrated camera and onboard AI processor, the sensor can recognize 5 predefined hand gestures and detect up to 10 faces or upper-body presences simultaneously within a 3-meter range. By combining computer vision and real-time edge AI computing, it delivers responsive and private interaction without cloud dependency.
Featuring dual communication interfaces (I2C and UART) and wide voltage support (3.3V–5V), this module is fully compatible with Arduino, Raspberry Pi, ESP32 and graphical platforms like MakeCode and Mind+. It is ideally suited for smart home interfaces, touchless control systems, public interaction devices, and privacy-focused IoT solutions.
Edge AI Processing – Real-Time, Offline, and Privacy-Safe
All recognition tasks are handled locally by the onboard AI processor—no data is stored or transmitted to the cloud. This completely offline operation guarantees data privacy, making it ideal for sensitive scenarios such as hospital automation, bathroom controls, children’s systems, or public restrooms. Despite its powerful capabilities, it consumes only 100mA (typical), suitable for power-sensitive or standalone applications.
Recognizes 5 Intuitive Hand Gestures – Touchless Control Made Easy
The AI gesture and face detection sensor supports recognition of five intuitive hand gestures—including thumbs up, peace sign, and open palm—within a 0.5 to 3 meter range. Each gesture triggers a distinct RGB indicator, enhancing interaction feedback and simplifying development. Ideal for smart appliances, gesture-activated lights, assistive devices, and public kiosks.
Wide Detection Range with Optimized Field of View
With an 85° diagonal field of view and up to 3 meters detection range, the AI gesture and face detection sensor ensures consistent performance whether installed on walls, ceilings, or desks. Its wide coverage allows use in compact enclosures, hallways, or open rooms, serving multi-user environments such as classrooms, conference areas, or interactive displays.
Upper-Body and Face Detection with Real-Time Count
Beyond gesture control, the sensor detects head-and-shoulder patterns and can recognize up to 10 human presences or faces simultaneously, providing position and count output in real time. Perfect for occupancy-based HVAC, lighting automation, and people counting in offices, shops, and smart spaces—all with full offline privacy assurance.
Features
Offline AI gesture & face detection with fast, accurate response
High-sensitivity detection of five hand gestures
Reliable face and body presence detection up to 3 meters
Simultaneous recognition of up to 10 faces or upper-body presences
Dual communication interfaces: I2C and UART
Compatible with both 3.3V and 5V systems
Supports graphical coding environments including MakeCode and Mind+
Applications
Wireless Smart Home Gesture Controller System
Gesture-Enabled Remote Control Systems for Healthcare
Interactive Art Device
Smart People Counting Device
Specification
Electrical Specifications
Operating Voltage: 3.3V – 5V
Logic Level Voltage: 3.3V
Current Consumption: 100mA
Communication & Interface
Connector Type: PH2.0-4P / 2.54mm pin header
Communication Protocols: I2C / UART
I2C Address: 0x72
Default UART Baud Rate: 9600bps
UART Protocol: Modbus - RS485
Interrupt Output: 2.54mm pin header
Recognition Capabilities
Supported Gesture Types (5):
Thumbs up
Extend the middle, ring, and little fingers
Open palm facing outward
Extend the index and middle fingers
Extend the thumb and little finger
Maximum Recognizable Faces & Head-Shoulder Count: 10
Detection Area for Face & Shoulders: Recognizes upper-body presence within camera range
Face Recognition Confidence Score: 0 – 100
Position Coordinate Output: Supported
Gesture Recognition Distance: 0.5m – 3m
Face Recognition Distance: 0.5m – 3m
Camera Field of View (FoV): 85° (diagonal)
Camera Focal Length: 1.56mm
Visual Indicators
Gesture Recognition RGB Indicator:
Blue: Thumbs up
Green: Extend the middle, ring, and little fingers
Red: Open palm outward
Yellow: Extend the index and middle fingers
Purple: Extend the thumb and little finger
Presence Detection LED: Illuminates when a person is detected, turns off when no presence is detected
Mechanical Dimensions
PCB Dimensions: 42mm × 32mm
Mounting Hole Spacing: 25mm × 35mm
Mounting Hole Diameter: 3.1mm
Shipping List
Gravity: Offline Edge AI Gesture & Face Detection Sensor x1
Gravity PH2.0 - 4P connecting line x1
