What Will I Learn?
- You will learn to use Sensor Termo (LM 35) Sensor
- You will learn how to integrate the Termo sensor with the arduino uno board.
- You will learn how to make simple termometer with termo (LM 35) sensor
Requirements
Hardware
- Arduino Uno
- LM-35 Module
- Liquid Crystal LCD ( 16 x 2 )
- Breadboard
- Jumper Wires Male To Male
- USB type A to B cable
- Personal Computer (Laptop)
Software
- Arduino IDE
Knowledge
- Electronics and Robotics Basic
Difficulty
- Basic
Project Introduction
- This project uses a temperatur sensor (LM-35) Module that is controlled by an arduino uno board. The LM-35 Module connect to analog pin as reader input termperatur and LCD connected to arduino uno board serves as Output viewer media.
Component Description
Arduino Uno - is a Atmega32-based microcontroller board. Having many digital and analog pins, the arduino can be easily programmed via a computer or laptop with USB and is designed to facilitate electronic users in various fields. As open source he comes with 2 products namely Hardware Arduino Board and Arduino IDE software.
LM-35 Module - LM35 is a sensor that can be used to measure temperature with output that is proportional to temperature (° C). Often used because it is more accurate than thermistor and easily combined with arduino board. The low price is also a major factor in the use of this tool. LM-35 has 3 pins "V (+)", "GND (-)" and signal (S).
Tutorial Contents
Step 1 : Prepare All Parts
You can buy from online store or directly to the Electronics Shop
Step 2 : Build Circuit Architecture
- Connect the "GND" of the arduino uno board to "VSS" LCD and "V(+)" LM-35.
- Connect the "5V" of the arduino uno board to "VDD" LCD and "GND(-)" LM-35 .
Pin Connect LCD
- Connect the "pin number 7" of the arduino uno board to "RS" LCD.
- Connect the "pin number 6" of the arduino uno board to "E" LCD.
- Connect the "pin number 5" of the arduino uno board to "DB(4)" LCD.
- Connect the "pin number 4" of the arduino uno board to "DB(5)" LCD.
- Connect the "pin number 3" of the arduino uno board to "DB(6)" LCD.
- Connect the "pin number 2" of the arduino uno board to "DB(7)" LCD.
Pin Connect LM-53
- Connect the "Analog Number 0" of the arduino uno board to "Singnal" LM-35.
Step 3 : Programing
- Connect Arduino to the computer with USB .
- Open the Arduino IDE > Chose your Board Type
Copy the code below and paste it into your own sketch in the arduino software.
- Simple thermometer
#include <LiquidCrystal.h> // include library for LCD
LiquidCrystal lcd(7, 6, 5, 4, 3, 2); // pin to LCD
int potPin = 0; // select the input pin for the LM35
float suhu = 0;
long val = 0;
void setup()
{
Serial.begin(9600);
lcd.begin(16, 2); // set up the LCD's number of rows and columns
}
void loop()
{
val = analogRead(potPin); // read the value from the sensor
suhu = (5.0 * val * 100.0)/1024.0; // convert to Celcius
lcd.clear(); // clear LCD screen
lcd.setCursor(0,0); // set text to LCD row 1
lcd.print("current temp. "); // some text to add meaning to the numbers
lcd.setCursor(0,1); // set text to LCD row 2
lcd.print((long)suhu); // writing temperature value
lcd.print(" deg.C");
delay(1000);
}
After Copy the codes, click the "Verify button" to save and compile the sketch. This will also check for any errors in the program.
If no errors is found , now you can click "Upload button" to start installing the program into the arduino uno board.
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