#include <LiquidCrystal_I2C.h>
#define SENSOR A0
LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display


void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
  lcd.setCursor(5,0); 
  lcd.print("H15 Pharos");
// initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
  lcd.init();
  lcd.backlight();
  float psi = 1.0;
  float voltage =1.0;
  int adcVal = 0;
  adcVal = analogRead(SENSOR);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
  voltage = adcVal*5/1024.0;
  psi = 50*voltage-25;// 
  // print out the value you read:
  Serial.print("Voltage: ");
  Serial.println(voltage);
  Serial.print("PSI: ");
  Serial.println(psi);
  //map(value, fromLow, fromHigh, toLow, toHigh)
  float out2 = map(adcVal, 102.4, 920.6, 0.0, 200.0);
  Serial.print("Mapped: "); Serial.println(out2);
  lcd.setCursor(0,0); 
  lcd.print("Voltage: ");
  lcd.print(voltage);
  lcd.setCursor(0,1); 
  lcd.print("PSI: ");
  lcd.print(psi);
}