Gravity: Offline Edge AI Gesture & Face Detection Sensor – 5 Gestures, 10 Faces, 3m (Arduino/ RPi/ ESP32)

The Gravity: Offline Edge AI Gesture & Face Detection Sensor is designed 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 by the onboard AI processor—no data is ever stored or transmitted to the cloud. This completely offline operation guarantees data privacy, making it ideal for sensitive applications in healthcare, public spaces, or homes. Despite its powerful capabilities, the offline AI gesture Sensor has a low operating current of just 100mA, making it perfect for power-sensitive and standalone projects.

Figure: Edge AI Processing – Real-Time and Offline

Recognizes 5 Intuitive Hand Gestures

The offline AI gesture & face detection sensor accurately recognizes five common hand gestures from 0.5 to 3 meters away. Each recognized gesture triggers a corresponding colored RGB light, providing instant visual feedback for seamless interaction. This makes it perfect for contactless control of smart appliances, interactive installations, and assistive devices.

The 5 recognized gestures are: Good (Thumbs-up, Blue light), OK (OK gesture, Green light), Stop (Open palm, Red light), Victory (V sign, Yellow light), Call me (Call me gesture, Purple light)

Face & Upper-Body Detection with Real-Time Data

Beyond gestures, the offline AI gesture & face detection sensor excels at detecting human presence by identifying the head-and-shoulders area. It can track up to 10 people simultaneously and outputs the total count in real-time. For more advanced applications, it provides the position coordinates (X/Y) and confidence score of the most clearly detected face. This enables sophisticated functions like occupancy-based climate control, people-counting for retail analytics, or a fan that automatically tracks a person's position.

Wide Detection Range with Optimized Field of View

With an 85° diagonal field of view and a 3-meter detection range, the long-range AI gesture & face detection sensor ensures consistent and reliable performance in a variety of environments. Whether mounted on a wall, integrated into a device, or placed on a desk, its wide coverage is ideal for everything from small rooms to larger, multi-user spaces like classrooms or lobbies.