Tags: Distance, Proximity, And, Ambient, Light, Sensor, CJMCU-9930, APDS-9930,

Distance Proximity And Ambient Light Sensor CJMCU-9930 APDS-9930

  • 29.00 AED
    • Ex Tax:29.00 AED
    • Brands China
    • Product Code:
    • Availability: In Stock
    The APDS-9930 provides digital ambient light sensing (ALS), IR LED and a complete proximity detection system in a single 8 pin package The wide dynamic range also allows for operation in short distance detection behind dark glass such as a cell phone.Optical m..
    The APDS-9930 provides digital ambient light sensing (ALS), IR LED and a complete proximity detection system in a single 8 pin package The wide dynamic range also allows for operation in short distance detection behind dark glass such as a cell phone.

    Optical modules integrated with ALS, infrared LEDs and proximity detectors
    • Ambient Light Sensing (ALS)
       - Approximate human visual response
       - Programmable interrupt capability with upper and lower thresholds
       - Up to 16-bit resolution
       - High sensitivity operation behind dark glass
       - 0.01lux low lumen performance
    • Proximity detection
       - Fully calibrated to 100 mm detection
       - Integrated infrared LED and synchronous LED driver
       - Eliminates factory calibration of the proximity sensor
    • Programmable wait timer
       - Wait state power consumption - 90μA typical
       - Programmable range from 2.7 ms to more than 8 seconds
    • I2C interface compatible
       - Up to 400kHz (I2C fast mode)
       - Dedicated interrupt pin
    • Sleep Mode Power - 2.2μA typical
    • Small package 3.94 (L) x 2.36 (W) x 1.35 (H) mm


    Applications:

    • Adjustable light mobile phone backlight
    • Notebook / display security
    • automatically enabled hands-free mode
    • Automatic menu popup
    • Digital camera eye sensor




    This is CJMCU 9930 APDS-9930 Digital Proximity And Ambient Light Sensor For Arduino. The APDS-9930 provides digital ambient light sensing (ALS), IR LED and a complete proximity detection system in a single 8 pin package. The proximity function offers plug and play detection to 100 mm (without front glass) thus eliminating the need for factory calibration of the end equipment or sub-assembly.

    The proximity detection feature operates well from bright sunlight to dark rooms. The wide dynamic range also allows for operation in short distance detection behind dark glass such as a cell phone.

    In addition, an internal state machine provides the ability to put the device into a low power mode in between ALS and proximity measurements providing very low average power consumption. The ALS provides a photopic response to light intensity in very low light condition or behind a dark faceplate.

    arduino-and-APDS9930_bb

    Pin LabelDescription
    VLOptional power to the IR LED. Must be 3.0 – 4.5V
    GND Ground.
    VCCMust be 2.4 – 3.6V
    SDAI2C data
    SCLI2C clock
    INTExternal interrupt pin.



    Code

    You need to install the following library – https://github.com/Davideddu/APDS9930 . This is an ambient light example, there are also proximity examples

    We also recommend you take a look at the sparkfun library – https://github.com/sparkfun/APDS-9960_RGB_and_Gesture_Sensor/ and take a look at those examples as well

    /****************************************************************
     
     Arduino Pin  APDS-9930 Board  Function
     
     3.3V         VCC              Power
     GND          GND              Ground
     A4           SDA              I2C Data
     A5           SCL              I2C Clock
    ****************************************************************/
     
    #define DUMP_REGS
     
    #include <Wire.h>
    #include <APDS9930.h>
     
    // Global Variables
    APDS9930 apds = APDS9930();
    float ambient_light = 0; // can also be an unsigned long
    uint16_t ch0 = 0;
    uint16_t ch1 = 1;
     
    void setup()
    {
     
      // Initialize Serial port
      Serial.begin(9600);
      Serial.println();
     
      // Initialize APDS-9930 (configure I2C and initial values)
      if ( apds.init() )
      {
        Serial.println(F("APDS-9930 initialization complete"));
      }
      else
      {
        Serial.println(F("Something went wrong during APDS-9930 init!"));
      }
     
      // Start running the APDS-9930 light sensor (no interrupts)
      if ( apds.enableLightSensor(false) )
      {
        Serial.println(F("Light sensor is now running"));
      }
      else
      {
        Serial.println(F("Something went wrong during light sensor init!"));
      }
     
      // Wait for initialization and calibration to finish
      delay(500);
    }
     
     
    void loop()
    {
     
      // Read the light levels (ambient, red, green, blue)
      if (  !apds.readAmbientLightLux(ambient_light) ||
            !apds.readCh0Light(ch0) ||
            !apds.readCh1Light(ch1) ) {
        Serial.println(F("Error reading light values"));
      }
      else
      {
        Serial.print(F("Ambient: "));
        Serial.print(ambient_light);
        Serial.print(F("  Ch0: "));
        Serial.print(ch0);
        Serial.print(F("  Ch1: "));
        Serial.println(ch1);
      }
     
      // Wait 1 second before next reading
      delay(1000);
    }

     


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