PAJ7620U2 Gesture Sensor

PAJ7620U2 can recognize 9 commonly used hand gestures for controlling arduino projects including move up, move down, move left, move right, move forward, move backward, circle-counter clockwise, circle-clockwise, and wave.These gestures data can be directally accessed via the I2C bus interface.

The PAJ7620 also gives built-in aility of proximity detection for the purpose of sensing object approaching or departing. The PAJ7620 is designed with great flexibility in power-saving mechanism.

Where to Buy?

This Module is available in many Chinese online stores as well as Amazon. Its price varies, but you can get it for approximately $4.5 in most stores.

Check Price on Aliexpress | Banggood | Amazon.com |Amazon.in

My personal favrate for this product is Aliexpress Slow Shipping but Low Price + Wolrdwide Delivery

Function

This modules comes with in-built IR LED, optical CMOS array and uses I2C interface to control and program using Arduino microcontroller. PAJ7620U2 modules costs less than $3, and besides the Gesture Recognition modules, it also featured with

Built-in proximity detection,
Flexible power saving scheme,
Ambient light noise cancellation,
Nine gesture recognition (Up / Down / Left / Right / Push / Pull / CW / CCW / Wave),
Gesture speed is 60°/s to 600°/s in Normal Mode and 60°/s to 1200°/s in Gaming Mode,
Ambient light immunity: < 100k Lux.
I2C Interface upTo 400 Kb/Sec

Specifications

Operating voltage: 3.3V/5V
Communication interface: I2C
Recognition distance: 5cm ~ 15cm
Recognition rate: 240Hz
Recognition angle: 60° (diagonal)
Dimensions: 16mm × 20.18mm
Mounting hole size: 3.0mm
Current Consumption
- Operation State : 2.82 mA
- Standby State: 2.3mA

Applications of Gesture Sensor

we can use hand gesture as an input to control another grove, or a computer, mobile phone, robot, smart car, and more with a simple swipe of your hand. some of the more common application area

Automobile Application
Home Automation
Low power battery operated HMI devices
Gesture-Controlled Lock
Hand Gesture Controlled Robot
Gesture Mouse

PAJ7620U2 Gesture Detection Range

This Gesture Detection module works great between 5-15cm distance and flat mounting with view angle is about 60 degree.

Pinout

It comes with 5-pin, 2.54mm pitch connector for I2C connection.

Pin No	Sensor Pin	Function
1	VCC	3.3V / 5V
2	GND	Ground
3	SCL	I2C Clock Port
4	SDA	I2C Data Port
5	INT	Interrupt Output

PAJ7620U2 Arduino

Image Source : Hand Gesture Recognition Sensor Arduino Interfacing

To interface with this sensor module with Arduino, you need to connect to its 4-pin, 2.54mm pitch connector by using jumper wire to arduino board as given in below table.

Pin No	Sensor Pin	Arduino Pin
1	VCC	Arduino 3.3V
2	GND	Arduino GND
3	SCL	Arduino A5 (SCL)
4	SDA	Arduino A4 (SDA)

Download the Arduino PAJ7620 library in the Library Manager menu in arduino IDE. Example code is available to test the module.

The above schematic is applicable Arduino Uno. In the same way you can connect this mudule to SCL and SDA pin of other arduino board such as Arduino Mega and Arduino Nano.

Conclusion

This is a super cool gesture sensor module enable you to control the physical environment using Arduino and Raspberry Pi without spending too much budget..

*sometimes it can be tricky while detecting the Forward gesture.

Pin No	Sensor Pin	Function
1	VCC	3.3V / 5V
2	GND	Ground
3	SCL	I2C Clock Port
4	SDA	I2C Data Port
4	INT	Interrupt Output

More great Projects using PAJ7620U2

Hand Gesture Recognition Using Arduino and PAJ7620U2

Add hand gestures to your Arduino projects (robots, HMI, lights, etc.). this fast tutorial is about the PAJ7620 hand gestures sensor.

Control Your Music Players with Hand Gestures

This is a super cool device that you canuse gesture to control the media player. You can simply think this is akeyboard that use gesture to trigger.

PAJ7620U2 Arduino Gesture Sensor | Review | Price | Specifications