Temperature sensor (LM35) interfacing with arduino & LCD in proteus -

Temperature sensor (LM35) interfacing with arduino & LCD in proteus

In this article we will learn how to interface arduino with Temperature sensor (LM35) & LCD in proteus.
In the last post we will learn how to interface arduino with IR proximity sensor and LCD in proteus. You can visit our website,
I hope you appreciate my work, let’s discuss about today’s project.

What is Temperature sensor?

Components which we use in this project are listed below:

Temperature sensor (LM35)
Arduino UNO
I2C
Resistor (10K)
LEDs
LCD display
Jumper wires

Diagram of this project is below:

Construction of Temperature sensor (LM35) interfacing with arduino & LCD in proteus:

Connect the +ve pin of temperature sensor with +ve
Connect the –ve point of temperature sensor with the GND
Connect the out pin of temperature sensor with the A0 pin of arduino UNO
Connect the A5 pin of arduino with the pin 14 of I2C
Connect the A4 pin of arduino with the pin 15 of I2C
Connect the A0,A1,A2 pins of I2C with the GND
Connect the pin 8 of arduino with the one side of R3
Connect the other side of R3 with the +ve point of LED1
Connect the –ve side of LED1 with the GND
Connect the pin 9 of arduino with the one side of R2
Connect the other side of R2 with the +ve point of LED2
Connect the –ve point of LED2 with the GND
Connect the pin 10 of arduino with the one side of R1
Connect the other side of R1 with the +ve side of LED1
Connect the –ve side of LED1 with the GND
Connect the VSS point of LCD display with the GND
Connect the VDD point of LCD display with the +ve point
Connect the pin 4 of I2C with the point RS of LCD display
Connect the pin 5 of I2C with the point RW of LCD display
Connect the pin 6 of I2C with the point E of LCD display
Connect the pin 7 of I2C with the point D3 of LCD display
Connect the pin 9 of I2C with the point D4 of LCD display
Connect the pin 10 of I2C with the point D5 of LCD display
Connect the pin 11 of I2C with the point D6 of LCD display
Connect the pin 12 of I2C with the point D7 of LCD display

Working of Temperature sensor (LM35) interfacing with arduino & LCD in proteus:

Interfacing a temperature sensor with an Arduino is a common project that allows you to measure and display temperature data.

Applications of Temperature sensor (LM35) interfacing with arduino & LCD in proteus:

Weather Station
Thermostat
Incubator Controller
Home Automation

Advantages of Temperature sensor (LM35) interfacing with arduino & LCD in proteus:

Accurate Temperature Measurement
Ease of Interface
Wide Temperature Range
Low Power Consumption
Analog Output

Program code of this project is below:

#include <LiquidCrystal_I2C.h >

LiquidCrystal_I2C lcd(0x20, 16, 2);

int R_LED = 8;

int Y_LED = 9;

int G_LED = 10;

void setup() {

lcd.begin(16, 2);

lcd.init();

pinMode(R_LED, OUTPUT);

pinMode(Y_LED, OUTPUT);

pinMode(G_LED, OUTPUT);

lcd.setCursor(2, 0);

lcd.backlight();

lcd.print(“Hello”);

lcd.setCursor(0, 1);

lcd.print(“Projectiot123″);

delay(1000);

lcd.clear();

lcd.setCursor(0, 0);

lcd.print(” Digital “);

lcd.setCursor(0, 1);

lcd.print(” Thermometer “);

delay(500);

lcd.clear();

}

void loop() {

float vol = analogRead(A0) * (5.0 / 1023.0) * 100;

delay(10);

lcd.clear();

lcd.setCursor(2, 0);

lcd.print(“Temperature”);

lcd.setCursor(4, 1);

lcd.print(vol);

lcd.write(0);

lcd.print(“C”);

delay(1000);

if (vol <= 31)

{

digitalWrite(G_LED, HIGH);

digitalWrite(Y_LED, LOW);

digitalWrite(R_LED, LOW);

}

else if (vol >= 32 && vol <= 40)

{

digitalWrite(R_LED, LOW);

digitalWrite(Y_LED, HIGH);

digitalWrite(G_LED, LOW);

}

else if (vol >= 41)

{

digitalWrite(G_LED, LOW);

digitalWrite(Y_LED, LOW);

digitalWrite(R_LED, HIGH);

}

delay(100);

}