Published May 26, 2023 © GPL3+

Build your own Barometer

Revolutionize your smart home with a cloud-free barometer! The project utilizes BMP180 sensor for accurate Temperature&pressure monitoring.

BeginnerFull instructions provided1 hour179

Things used in this project

Hardware components

96Boards Tripler Adapter

Bosch BMP 180

Seeed Studio Grove - OLED Display 0.66" (SSD1306)- IIC - 3.3V/5V

Espressif Wemos D1 Mini

Story

Cloud-Free Barometer: Your Smart Home's Atmospheric Insight

Welcome to the world of cloud-free smart home technology! In this project, we present an innovative barometer utilizing the BMP180 sensor, D1 Mini board, and an OLED display. Say goodbye to relying on cloud services and gain real-time atmospheric insights right at your fingertips.

I embarked on this project with a vision to create a barometer solution that empowers homeowners to have complete control over their smart home devices without relying on external cloud services. I believe in the importance of data privacy and wanted to offer a local and secure alternative for monitoring atmospheric pressure within your smart home ecosystem.

Key Features:

1. BMP180 Sensor: The heart of our barometer is the highly accurate BMP180 sensor, which provides precise atmospheric pressure readings. It enables you to track changes in weather patterns and make informed decisions accordingly.

2. D1 Mini Board: I chose the versatile D1 Mini board as the brain of my system. Its compact size, built-in Wi-Fi, and extensive community support make it an ideal choice for DIY smart home projects.

3. OLED Display: Visualize atmospheric pressure readings in real time on the OLED display. The crisp and clear graphical interface ensures easy interpretation and enhances the overall user experience.

How It Works:

1. Hardware Setup: Connect the BMP180 sensor and the OLED display to the D1 Mini board following the detailed step-by-step guide. Ensure the connections are secure and double-check the pin assignments.

N/B You can avoid coding hassle in step 2 by clicking on the link below  and installing the firmware and you'll be good to go! 
 https://chipglobe-dev.web.app/BMP180/D1-Mini

2.Code Installation: Download and flash the provided code onto the D1 Mini board. It comes with a user-friendly interface and simple configuration options to customize the display and update intervals according to your preferences.

3. Real-Time Monitoring: Once the hardware and software are set up, the barometer starts monitoring atmospheric pressure and displays the readings on the OLED display. You can observe changes and trends in pressure, allowing you to make informed decisions based on weather conditions.

Conclusion:

Embrace the freedom and privacy of a cloud-free smart home with our barometer project. By using the BMP180 sensor, D1 Mini board, and OLED display, you'll have real-time atmospheric pressure insights within your smart home ecosystem. Take charge of your environment and make smarter decisions. Join us in building a secure and personalized smart home experience today!

Schematics

Code

Untitled file

#include <Wire.h>
#include <Adafruit_BMP085.h>
#include <SFE_MicroOLED.h> 

#define PIN_RESET 255 
#define DC_JUMPER 0 

MicroOLED oled(PIN_RESET, DC_JUMPER); // Example I2C declaration
Adafruit_BMP085 bmp;

void setup(){
Serial.begin(9600);
  
if (!bmp.begin()) {
Serial.println("Could not find a valid BMP180 sensor, check wiring!");
while (1) {}
}
  
oled.begin();
oled.clear(ALL); // Clear the display's memory (gets rid of artifacts)
oled.display();
}

void loop()
{
// Wait a few seconds between measurements.
delay(2000);
  
oled.clear(PAGE);
oled.setFontType(0); 
  
oled.setCursor(1, 3);
oled.print("Pressure = ");
oled.setCursor(1, 12);
oled.print(bmp.readPressure());
oled.print(" Pa");
  
oled.setCursor(1, 21);
oled.print("Temp =");
oled.setCursor(1, 30);
oled.print(bmp.readTemperature());
oled.print(" *C ");
  
oled.display();
  
delay(2000);
  
//2nd page of readings
oled.clear(PAGE);
oled.setFontType(0); 
  
oled.setCursor(1, 3);
oled.print("Altitude = ");
oled.setCursor(1, 12);
oled.print(bmp.readAltitude());
oled.print(" m");
  
oled.setCursor(1, 21);
oled.print("Sea level=");
oled.setCursor(1, 30);
oled.print(bmp.readSealevelPressure());
oled.print(" Pa");
  
oled.display();
}