/*
Display temperature in an LCD display
in celsius
*/
// include LCD library headers
#include <LiquidCrystal.h>
// constants won't change. They're used here to
// set pin numbers:
// in Pin 0 we will connect the temperature
// sensor. Give it a name.
const int tempPin = 0;
// variables will change:
// variable for reading the temperature from
// sensor
int tempReading;
// variables to convert sensor reading to C
float tempVolts, tempC;
// setup LCD
// RS E D4 D5 D6 D7
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
// the setup routine runs once when you press
// reset:
void setup() {
// initialize the LCD
lcd.begin(16, 2);
lcd.setCursor(0, 1);
lcd.print("Room condition");
lcd.setCursor(0, 0);
lcd.print("Temp C: ");
}
// the loop routine runs over and over again
// forever:
void loop() {
// read the temperature
tempReading = analogRead(tempPin);
// convert reading to C
tempVolts = tempReading * 5.0 / 1024.0;
tempC = (tempVolts - 0.5) * 100.0;
// print it to LCD
lcd.setCursor(8, 0);
lcd.print(tempC);
delay(500);
}
