PAJ7620U2 Gesture Recognition Sensor Module 2.83.6V I2C Interface Board

Product Overview
PAJ7620U2 Gesture Recognition Sensor Module. Intelligent optical gesture sensor with built‑in gesture engine supporting multiple hand gestures. Uses original PAJ7620U2 chip, providing stable recognition and easy integration via I2C interface.

1. Product Parameters
Sensor IC: PAJ7620U2
Sensor Type: Gesture recognition sensor
Supported Gestures: Up, Down, Left, Right, Forward, Backward, Clockwise, Counter‑clockwise, Wave
Supply Voltage (VCC): 2.8–3.6 V DC
Detection Distance: Up to 15 cm
Output Type: Digital gesture data
Communication Interface: I2C
Light Source: Built‑in IR LED
Power Consumption: Low power design
Operating Temperature: −20 °C to +85 °C
2. Pin Function Description
VCC (IN+): DC power input positive
GND: Power ground
SCL: I2C clock signal
SDA: I2C data signal
INT: Interrupt output, gesture detected
3. Common Questions & Answers (FAQ)
Q1: How many gestures does this sensor support?
A1: It supports 9 built‑in gesture types.

Q2: What voltage is required to power the module?
A2: It operates from 2.8V to 3.6V DC.

Q3: Which interface is used for communication?
A3: It uses the I2C digital interface.

Q4: Does it work in low‑light conditions?
A4: Yes, it has a built‑in IR light source.

Q5: Is it compatible with Arduino or MCU boards?
A5: Yes, with proper voltage level matching.

• 【Built‑In 9 Gesture Recognition Engine】 PAJ7620U2 gesture sensor supports 9 predefined hand gestures including up, down, left, right, forward, backward, clockwise, counterclockwise, and wave; onboard recognition engine outputs direct results; reduces algorithm development time for interactive control designs
• 【Non‑Contact Optical Sensing With IR Source】 Uses integrated IR LED and optical sensing for gesture detection; supports recognition distances up to 15 cm; enables touch‑free user input; improves reliability in low‑light environments while maintaining stable digital gesture output
• 【I2C Digital Interface With Interrupt Output】 Standard I2C communication delivers decoded gesture data; INT pin signals gesture events instantly; reduces continuous polling and processor load; simplifies firmware structure for responsive human interface applications
• 【Low Voltage And Low Power Operation】 Operates from 2.8 V to 3.6 V DC; compatible with modern low‑power microcontrollers; supports energy‑efficient designs; suitable for compact systems requiring continuous gesture monitoring without high power demand
• 【Compact Module For Fast Integration】 Small PCB with clear VCC, GND, SCL, SDA, and INT pins; simplifies wiring and layout; supports quick prototyping; compatible with for Arduino and similar I2C controllers using proper voltage level matching

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