#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

bool Welcome = false;

int potpin = A0;  // analog pin used to connect the potentiometer
int val;
int potpin2 = A1;
int val2;

double rc1;
double rc2;

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  Serial.begin(9600);
  // Init
  lcd.init();
  lcd.backlight();
}


void loop()
{
  if (Welcome == false)
  {
    welcome();
  }
  else
  {
    screenSetup();
  }
}

void welcome()
{
  // Print something
  lcd.setCursor(3, 0);
  lcd.setCursor(0, 0);
  lcd.print("Cummins Meritor");
  lcd.setCursor(0, 1);
  lcd.print("Running Clerance");
  lcd.setCursor(0, 2);
  lcd.print("Block");
  delay(2000);
  lcd.clear();
  Welcome = true;
}

void screenSetup()
{
  lcd.print("Lead  RC");
  lcd.setCursor(0, 1);
  lcd.print("---------");
  lcd.setCursor(11, 0);
  lcd.print("Trail  RC");
  lcd.setCursor(11, 1);
  lcd.print("---------");
  lcd.setCursor(9, 0);
  lcd.print("||");
  lcd.setCursor(9, 1);
  lcd.print("||");
  lcd.setCursor(9, 2);
  lcd.print("||");
  lcd.setCursor(9, 3);
  lcd.print("||");

  val = analogRead(potpin);
  val2 = analogRead(potpin2);

  val = map(val, 0, 1023, 0, 400);
  val2 = map(val2,0,1023,0,400);

  rc1 = val / 20;
  lcd.setCursor(0, 2);
  lcd.print(" ");
  lcd.print(rc1 / 20);
  lcd.print("mm");

rc2 = val2/20;
lcd.setCursor(13,2);
lcd.print(rc2/20);
lcd.print("mm");
delay(700);
lcd.clear();
}