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APDS9960 is a multifunction sensor. It can detect gestures, ambient light and RGB values in light. This sensor can also be used as a proximity sensor and is mostly used in smartphones, to disable the touchscreen while attending a call.
This sensor consists four photodiodes. These photodiodes detect the reflected IR energy which is transmitted by an on-board LED. So whenever any gesture is performed then this IR energy gets obstructed and reflects back to the sensor, now the sensor detects the information (direction, velocity) about the gesture and converts it into digital information. This sensor can be used to measures the distance of obstacle by detecting reflected IR light. It has UV and IR blocking filters for sensing RGB colors and it produce 16-bit data for each color.
The pin-out of APDS-9960 sensor is shown below. This sensor works on I2C communication protocol. It consumes 1µA current and powered by 3.3V so be careful and do not connect it with 5V pin. The INT pin here is interrupt pin, which is used to drive the I2C communication. And VL pin is optional power pin for the on-board LED if the PS jumper is not connected. If the PS jumper is closed then you only need to power VCC pin, it will provide power to both - the module and the IR LED.
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