# Make Distance and Temperature Measuring Sensor

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## Introduction: Make Distance and Temperature Measuring Sensor

Hello friends. Today i am here to tell you how to make a distance measuring sensor which also tells you the temperature of your surrounding. If you want to measure distance of a object then you can use it or you are new to arduino projects. I made this because i want to do something interesting with my arduino. If you want to make some interesting projects with arduino then you are on right place. Friend this is my first instructable so please like it and also don't forget to comment on it. You are free to make my instructable better.

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## Step 1: COMPONENTS:

for this project you need following part:

• Arduino UNO
• Ultrasonic sensor(HC-SR04)
• 16x2 LCD
• Temperature sensor(LM35)
• 10K potensio( i say it potensio you can call it variable resistance or preset)
• some wires

Lets get started......

## Step 2: Connecting LCD to Arduino

Connect the lcd to arduino according to the circuit give in the picture above.

if you are new to LCD and want to check weather your LCD is working connect the LCD to arduino according to the connection given in picture and open your arduino software on your PC. go to File >Examples >liquidcrystal >Hello world and upload the sketch to your arduino board. If you see hello world on lcd then your lcd is working perfectly but if nothing is displayed on your LCD just adjust the potensio and your LCD will start working.

## Step 3: Connecting Ultrasonic Sensor

now we will connect the ultrasonic sensor.

• connect vcc pin of of sensor to arduino 5v pin
• connect trig pin of sensor to arduino digital pin 8
• connect echo pin of sensor to arduino digital pin9
• connect gnd pin of sensor to arduino gnd pin

#define trigPin 8

#define echoPin 9

void setup(){
Serial.begin(9600);
pinMode(trigPin, OUTPUT) ;
pinMode(echo pin, INPUT) ;
}

void loop() {

int duration,distance;

digitalWrite(trigPin,HIGH);

delayMicroseconds(1000);

digitalWrite(trigPin,LOW);

duration=pulseIn(echoPin,HIGH);

distance=(duration/2)/29.1;

Serial.print(distance);

Serial.print(" cm");

delay(500);

}

## Step 4: Connecting LM35 to Arduino

now we will connect LM35 to Arduino.

• connect vs pin to 5v
• connect vout pin to analog pin A0
• connect gnd pin to gnd in arduino board

here is a program to check your LM35.

## Step 5: The CODE

here is the code for distance and temperature measuring sensor. Upload it to your board and have fun with your project. Don't forget to like and comment

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## 7 Discussions

Nice attempt on your first instructable.

Their was a problem in the ultrasonic sensor code which I have now corrected