Digital Thermometer With Arduino Uno and Lm35

It shows you the temperature with C symbol. C means Celsius

This shows you the components

tuis is the circuit

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // Address 0x27, 16 columns, 2 rows

const int lm35Pin = A0;

void setup() {

 lcd.begin(16, 2);

 Serial.begin(9600);

}

void loop() {

 float temperature = getTemperature();

 displayTemperature(temperature);

 delay(1000); // Update every second

}

float getTemperature() {

 int sensorValue = analogRead(lm35Pin);

 float voltage = sensorValue * (5.0 / 1023.0);

 float temperatureC = (voltage - 0.5) * 100.0;

 return temperatureC;

}

void displayTemperature(float tempC) {

 lcd.clear();

 lcd.setCursor(0, 0);

 lcd.print("Temp: ");

 lcd.print(tempC);

 lcd.print(" C");

}