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—sensor:paj [2026/02/10 18:52] (current) – vamsan
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 +====== LamaPLC: Pixart gesture recognition sensors/module with I²C communication ======
 +{{ :sensor:paj7620.png?180|PAJ7620U2}}
 +The PAJ7620U2 is a highly integrated gesture-recognition sensor module from Pixart that detects up to nine hand gestures and proximity via an I²C interface. It is commonly available on breakout boards for use with microcontrollers such as Arduino or Raspberry Pi.
 +
 +The sensor module 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 include onboard voltage translators for 3.3V/5V compatibility. If using a basic breakout board without a voltage regulator, connect a 3.3V supply to the VCC pin. If using a module that specifies 5V compatibility (such as the Waveshare or Gravity series), you can safely use either 3.3V or 5V.
 +  * **Detection Distance:** Effective range of 5 cm to 15 cm, with some setups reaching up to 20 cm.
 +  * **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 ====
 +
 +<code c>
 +sample
 +</code>
 +
 +==== Example codes ====
 +none
 +===== I²C topics on lamaPLC =====
 +{{topic>i2c}}
 +
 +\\
 +\\
 +
 +{{tag>PAJ7620U2 GY-PAJ7620 Pixart gesture_recognition i2c communication sensor arduino code}}
 +
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