Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	PAJ7620U2
Interface Type	I2C
Supported Gestures	9 Types (Up, Down, Left, Right, Forward, Backward, Clockwise, Counter-Clockwise, Wave)
Operating Voltage	3.3V - 5V
Detection Range	0 - 15 cm
Response Time	< 50ms
Working Current	Approx. 30mA
Standby Current	< 100uA
Dimensions	24mm x 18mm x 4mm
Compatibility	Arduino, Raspberry Pi, ESP32, STM32

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Excellent for educational kits

We bought ten of these for our robotics workshop. Students found them easy to program, and the response time is impressive. No issues so far after weeks of heavy use.

Anonymous

Mar 22, 2026

Rating: 4/5

Good sensitivity, needs calibration

The module detects gestures well, but I had to adjust the distance slightly to avoid false positives. Once calibrated, it performs consistently. Great value for the price.

Anonymous

Mar 20, 2026

Rating: 5/5

Best gesture sensor in this price range

I have tested several modules, and the PAJ7620U2 offers the best balance of speed and accuracy. The documentation is clear, and support was helpful when I had questions.

Anonymous

Mar 16, 2026

Rating: 5/5

Compact and powerful

Small form factor fits perfectly into tight enclosures. The I2C interface saves GPIO pins on my microcontroller. Detection of the wave gesture is particularly reliable.

Anonymous

Mar 12, 2026

Rating: 4/5

Solid performance

Works as advertised. The only minor issue is that bright ambient light can occasionally interfere, but shielding the sensor solved it immediately. Overall a great purchase.

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect for my smart home project

This sensor works flawlessly with my Arduino setup. The gesture recognition is accurate and the library provided makes integration very simple. Highly recommended for DIY enthusiasts.

5 FAQ

Q: Does this module work with 5V logic levels directly?

A: Yes, the PAJ7620U2 supports an operating voltage range of 3.3V to 5V, making it compatible with both 3.3V and 5V microcontrollers without needing a level shifter.

Q: Can I detect multiple gestures simultaneously?

A: The sensor processes gestures sequentially. It is designed to recognize one distinct gesture at a time to ensure accuracy and prevent command conflicts.

Q: What is the maximum detection distance for the 'Forward' gesture?

A: The optimal detection range is between 5cm and 15cm. While it may detect movements up to 20cm under ideal lighting conditions, reliability decreases beyond 15cm.

Q: Is there a Python library available for Raspberry Pi?

A: Yes, there are several open-source Python libraries available on GitHub specifically for interfacing this sensor with Raspberry Pi via the I2C bus.

Q: Does the module come with a connector cable?

A: The standard package includes the sensor module and a set of header pins. Cables are usually sold separately, but many users utilize standard Dupont jumper wires.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

3-Wire/4-Wire Flame Sensor Module, Fire Source Detection with IR Receiver, Flame Detection and Alarm

$1.08

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

HX711 Pressure Sensor Module Electronic Scale Bracket Weighing DIY Scale Pan Tray Set 5/10/40kg200

$3.28

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

DHT22 Single-Bus Digital Temperature & Humidity Sensor AM2302 Module Electronic Building Blocks

$10.42

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39