This sketch demonstrates how to use the Grove sound sensor.

04.30_-_Grove_sound_sensor.ino

/*  04.030 - Grove sound sensor
 *   
   This sketch demonstrates how to use the Grove sound sensor.

   The sound sensor  is an analog device. It outputs a voltage 
   level that depends on the intensity of the sound it captures. 
   This sketch calculates the volume of the sound based on the
   last 32 samples it captures.

   Upload this sketch and start the Serial monitor (you can also use
   the serial plotter). Clap your hands near the sensor and notice the 
   change in the output displayed in the monitor.
   
   
   Components
   ----------
    
    - Grove Base Shield
    - An Arduino Uno compatible board (such as Arduino/Genuino Uno or Seeeduino)
    - Grove sound sensor
    - One Grove cable
    
    IDE
    ---
    
    Arduino IDE
    
    Libraries
    ---------
    
    - 
    
    Connections
    -----------
    
    Use a Grove cable to connect the sound sensor module to Base Shield connector A0.
    
    Other information
    -----------------
    
    - Use this sketch along side the video lecture 04.030 of Grove For Busy People
    - Grove documentation: http://wiki.seeedstudio.com/Grove-Sound_Sensor/
    - Grove component: https://txplo.re/e171e
    - Bitshift right operator: https://www.arduino.cc/reference/en/language/structure/bitwise-operators/bitshiftright/
    
    Github Gist
    -----------
    <script src="https://gist.github.com/futureshocked/f8cfd0e547a22fae39410705cb8941b8.js"></script>

    https://gist.github.com/futureshocked/f8cfd0e547a22fae39410705cb8941b8
    
    For course information, please go to https://techexplorations.com/product/grove-for-busy-people/
        
    Created on July 5 2019 by Peter Dalmaris
*/

const int pinAdc = A0;  // Analog pin A0 is available through Grove connector A0

void setup()
{
    Serial.begin(115200);
}

void loop()
{
    long sum = 0;
    
    for(int i=0; i<32; i++)
    {
        sum += analogRead(pinAdc);
    }

    sum >>= 5;  // The >> operator is "bitshift right". It will shift the value stored in sum by 5 bits to the right.

    Serial.println(sum);
    delay(10);
}