This sketch demonstrates how to use the Grove rotary potentiometer.

03.40_-_Grove_rotary_potentiometer.ino

/*  03.040 - Grove rotary potentiometer
 *   
   This sketch demonstrates how to use the Grove rotary potentiometer.

   The momentary button is an analog device (i.e. it outputs a voltage 
   level that depends on the position of the knob).
   
   
   Components
   ----------
    
    - Grove Base Shield
    - An Arduino Uno compatible board (such as Arduino/Genuino Uno or Seeeduino)
    - Grove rotary potentiometer (rotary angle sensor)
    - One Grove cable
    
    IDE
    ---
    
    Arduino IDE
    
    Libraries
    ---------
    
    - 
    
    Connections
    -----------
    
    Use a Grove cable to connect the module to Base Shield connector A0.
    
    Other information
    -----------------
    
    - Use this sketch along side the video lecture 03.040 of Grove For Busy People
    - Grove component: https://txplo.re/7b837
    
    Github Gist
    -----------
    <script src="https://gist.github.com/futureshocked/a8a79e373c3527bc044af720a1c6f121.js"></script>

    https://gist.github.com/futureshocked/a8a79e373c3527bc044af720a1c6f121
    
    
    For course information, please go to https://techexplorations.com/product/grove-for-busy-people/
    
    Created on July 5 2019 by Peter Dalmaris
*/

int sensorPin = A0;    // Analog pin A0 is at Grove connector A0
int sensorValue = 0;  // variable to store the value coming from the sensor

void setup() {
  Serial.begin(9600); // Start the serial port
}

void loop() {
  // read the value from the sensor:
  sensorValue = analogRead(sensorPin);
  Serial.println(sensorValue);
}