In this project, we are getting to build a temperature and pressure measuring instrument . during this project, we’ll use a pressure sensor model BMP180 to detect temperature and pressure, Arduino device and 16 X 2 characters LCD to display temperature and pressure.

Hardware requirements

Arduino UNO board
USB cable connector for Arduino device
Pressure Sensor BMP180
16 X 2 Character LCD Display
Project Board
Jumper wires (male to female, male to male)

Software requirement

1. Arduino software IDE

The working rule of Pressure Sensor BMP180

The pressure sensor BMP180 consists of a piezo-resistive sensor, an analog and digital converter, control unit with E2PROM and a serial I2C interface. It delivers the contributed values of temperature and pressure. The microcontroller of the sensor device sends the beginning sequence to live temperature and pressure. The temperature and pressure are often read over 16 X 2 characters LCD.

The calculated temperature and pressure are measured in ℃, and hPa (hector Pascal) respectively. during this case, the speed of measuring temperature and pressure is once per second.

Write an Arduino program to live temperature and pressure using pressure sensor BMP180 and character LCD display.

#include
#include
#include
LiquidCrystal lcd(13, 12, 11, 10, 9, 8);//RS,EN,D4,D5,D6,D7
char PRESSURESHOW[4];// initializing a personality of size 4 to display pressure result
char TEMPERATURESHOW[4];// initializing a personality of size 4 to display temperature result
Adafruit_BMP085 bmp;
void setup() {
lcd.begin(16, 2);
// Print a logo message to the LCD.
lcd.print(” BMP180 Sensor”);
lcd.setCursor(0, 1);
lcd.print(“Temp. & Pressure”);
lcd.setCursor(0, 2);
delay (3000);
lcd.clear();//clear display
Serial.begin(9600);
if (!bmp.begin()){
Serial.println(“ERROR”);///if there’s a mistake in communication
while (1) {}
}
}
void loop(){
lcd.print(“Pressure= “); // print pressure
String PRESSUREVALUE = String(bmp.readPressure());
// convert pressure reading to a char array
PRESSUREVALUE.toCharArray(PRESSURESHOW, 4);
lcd.print(PRESSURESHOW);
lcd.print(“hPa “);
lcd.setCursor(0, 1);
lcd.print(“Temperature=”);// print temperature
String TEMPERATUREVALUE = String(bmp.readTemperature());
// convert the reading to a char array
TEMPERATUREVALUE.toCharArray(TEMPERATURESHOW, 4);
lcd.print(TEMPERATURESHOW);
lcd.print(“C “);
lcd.setCursor(0,0);//set the cursor to row and column 0, line1
delay(500);
}

Include the BMP180 library before compiling the above code otherwise, it generates a mistake Adafruit_BMP085.h file or library not found.

To include library click Sketch > Include Library > Manage Libraries…

Search for BMP180 library, and install the BMP085/BMP180 Library.

Compile and upload the code into Arduino device.

Now, connect your all devices accordingly. Digital circuit of Arduino, BMP180, and 16 X 2 characters LED is given below:

Result

We measure the pressure and temperature of Delhi within the winter season.

So, this brings us to the end of blog. This Tecklearn ‘IoT project of Temperature and Pressure measurement using Pressure sensor BMP180 and Arduino device’ blog helps you with commonly asked questions if you are looking out for a job in Internet of Things (IoT). If you wish to learn IoT and build a career in Internet of Things (IoT) domain, then check out our interactive, Internet of Things (IoT) Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

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Introduction to Internet of Things

What is IoT, how does it work
IoT vs IIoT
Business Cases of IIoT
Industry 4.0
Properties of IoT device
IoT Ecosystem
IoT Decision Framework
IoT Solution Architecture Models
How IoT is Transforming Businesses
Major IoT Boards in Market

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Types of wireless communication
Major wireless Short-range communication devices and properties
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Major wireless Long-range communication devices and properties, Comparison of these devices (Cellular IoT, LPWAN)

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IoT OS like Contiki, FreeRTOS and mbe
The edge and the connected thing or device

IoT Sensors and Device Platforms

Introduction to IoT Sensors and the role they play in getting the IoT systems work efficiently
Micro-electromechanical systems revolutionizing IoT sensors
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Use Case: Sericulture
Difference between microcontroller and microprocessor
IoT Device Platforms – Arduino, Raspberry Pi etc
Smartphone Centric Architecture
IoT Application Layer protocols
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Arduino Platform and Arduino Interfacing

Arduino physical board, libraries and the Integrated Development Environment
Arduino Shields various operations such as heat and light sensing, GPS, UI display
Programming Arduino using C language
Controlling external devices using pins on the Arduino board
The Arduino Interface
Reading inputs from various sources and providing an output
Working with sensors for sensing and controlling the physical world
Deploying various types of sensors and connecting it to the Arduino
Constant conversion between analog and digital signals for information exchange between the physical and digital domains
Hands On

Raspberry Pi Platform and Raspberry Pi Interfacing

Introduction to Raspberry Pi
Set up of Raspberry Pi environment
Coding for the Raspberry Pi using Python
Deploying Python-based Integrated Development Environment
Interfacing the Raspberry Pi with the physical world
Introducing the various input and output devices
Raspberry Pi expansion boards for building complex hardware setup
Real-time demo of Raspberry Pi interfacing
Hands On

Arduino Uno Wifi and IoTivity

Iotivity
Iotivity Architecture
Hands On

Netduino Platform and Netduino Interfacing

Introduction to Netduino Platform
Setting up the Netduino environment
Coding for the Netduino
Interfacing the Netduino with the physical world
Introducing the various input and output devices
Real-time demo of Netduino interfacing
Hands On

IoT for Arduino, NodeMCU and Netduino

Control LED light using Netduino board
NodeMCU
Blynk

Project: Building WSN with MQTT, Raspberry Pi & Arduino

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