#include <LiquidCrystal.h> 

int sensorPinA0 = A0;    				// select the input pin A0 for the potentiometer
int sensorPinA1 = A1;    				// select the input pin A1 for the potentiometer
int sensorValueA0 = 0;  				// variable to store the value coming from the sensor, Pin A0
int sensorValueA1 = 0;  				// variable to store the value coming from the sensor, Pin A1

LiquidCrystal lcd(2, 3, 10, 11, 12, 13);// Pinout, RS=2, E=3, DB4=10, DB5=11, DB6=12, DB7=13
int numRows = 2;						// Number of rows of the LCD
int numCols = 16;						// Number of Columns of the LCD
 
void setup()							// We write the initial configuration of our program.
{

  lcd.begin(numRows, numCols);			// Allocates or initializes the number of rows and columns of the LCD.
  lcd.clear();							// Clean the LCD screen
  lcd.setCursor(0,0);					// Place the cursor at column 0, row 0.
  lcd.print("*    Arduino   *");		// Write on the screen that is indicated between quotes.
  lcd.setCursor(0,1);					// Place the cursor at column 0, row 1.
  lcd.print("*   Professor  *"); 		// Write on the screen that is indicated between quotes.
 
  delay(2000);							// Wait 2 seconds.
  
  lcd.clear();  						// Clean the LCD screen
  lcd.setCursor(0,0);					// Place the cursor at column 0, row 0.
  lcd.print("*  LCD Screen  *");		// Write on the screen that is indicated between quotes.
  lcd.setCursor(0,1);					// Place the cursor at column 0, row 1.
  lcd.print("* ADC Exercise *"); 		// Write on the screen that is indicated between quotes.
 
  delay(2000);							// Wait 2 seconds.
  lcd.clear();  						// Clean the LCD screen

}
 
void loop()
{
  										    // Read the value from the sensor:
  sensorValueA0 = analogRead(sensorPinA0);  // Reads the voltage on the corresponding pin and converts it into a digital value.
  										    // which is stored in the variable "sensorValueA0".
  sensorValueA1 = analogRead(sensorPinA1);  // Reads the voltage on the corresponding pin and converts it into a digital value.
  										    // which is stored in the variable "sensorValueA1".
  lcd.setCursor(0,0);					// Place the cursor at column 0, row 0.
  lcd.print(" A0 & A1 value: "); 		// Write on the screen that is indicated between quotes.

  lcd.setCursor(0,1);					// Place the cursor at column 0, row 1.
  lcd.print("A0: ");             		// Write on the screen that is indicated between quotes.  

  lcd.setCursor(8,1);					// Place the cursor at column 8, row 1.
  lcd.print("A1: ");             		// Write on the screen that is indicated between quotes.    
  
  lcd.setCursor(3,1);					// Place the cursor at column 3, row 1.
  lcd.print(sensorValueA0);				// It is written on the screen indicated between quotes.

  lcd.setCursor(11,1);					// Place the cursor at column 11, row 1.
  lcd.print(sensorValueA1);				// It is written on the screen indicated between quotes.

  delay(1000);							// Wait 1 second.	
  
  lcd.setCursor(3,1);					// Place the cursor at column 3, row 1.
  lcd.print("    "); 					// Clear LCD screen begining on the (3,1) position.
  
  lcd.setCursor(11,1);					// Place the cursor at column 11, row 1.
  lcd.print("    "); 					// Clear LCD screen beginig on the (11,1) position.
  
  }