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LamaPLC: Pixart gesture recognition sensors / module with I²C communication
The PAJ7620U2 is a highly integrated gesture recognition sensor module by Pixart that can detect up to nine or more hand gestures and proximity via an I2C interface. It is commonly available on breakout boards for use with microcontrollers like Arduino or Raspberry Pi.
The sensor module is integrates an optical lens and an infrared (IR) LED to function even in low-light or dark environments.
Key Features
Supported Gestures: 9 basic gestures: Up, Down, Left, Right, Forward, Backward, Clockwise (CW) circle, Counter-clockwise (CCW) circle, and Wave. Some modules support up to 13 gestures in a slower mode. Interface: I2C communication interface (up to 400 kbit/s), default address: 0x73 Operating Voltage: Typically 2.8V to 3.6V (sensor chip); breakout boards often have onboard voltage translators for 3.3V/5V compatibility. If using a basic breakout board without a voltage regulator, provide a 3.3V supply to the VCC pin. If using a module that specifies 5V compatibility (like the Waveshare or Gravity series), you can safely use either 3.3V or 5V. Detection Distance: Effective range of 5 cm to 15 cm, but can be up to 20 cm in some setups. Ambient Light Immunity: High immunity to ambient light, up to <100k Lux. Power Consumption: Designed for low-power operation, suitable for battery-operated devices. Array Size: 60×60 pixels Gesture speed: 60~600°/s in Normal Mode and 60~1200°/s in Gaming Mode
Arduino wiring
- SCL: A5
- GND: GND
- SDA: A4
- Vdd: 5V
Arduino code
sample
Example codes
none
I²C topics on lamaPLC
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