Building a Simple Thermostat with Arduino

Hey, let’s builda simple Arduino based thermostat! If you want to start playing around right away, start with simulation link given at the bottom.

Parts:

1. Arduino Uno
2. TMP 36
3. LCD 16x2

Diagram:

Code:

#include <LiquidCrystal.h>
int sensorPin = 0;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(0, 1, 8, 9, 10, 11); //REGISTER SELECT PIN,ENABLE PIN,D4 PIN,D5 PIN, D6 PIN, D7 PIN
void setup() {
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
}
 
void loop() {
  //getting the voltage reading from the temperature sensor
 int reading = analogRead(sensorPin); 
 
 // converting that reading to voltage, for 3.3v arduino use 3.3
 float voltage = reading * 5.0;
 voltage /= 1024.0; 
 
 // now print out the temperature
 float temperatureC = (voltage - 0.5) * 100 ; //converting from 10 mv per degree with 500 mV offset
                        //to degrees ((voltage - 500mV) times 100)
 
 
 
  // set the cursor to column 0, line 1
  lcd.print(temperatureC);//print temperature
  
  lcd.setCursor(0, 0);// set the cursor to column 0, line1
  delay(1000);
 lcd.clear();
}

Simulation:
Tinkercad