Project Hub /Robotics & Autonomous Systems/Robotic Arms & Grippers/Digital Pressure Gauge

Intermediate

ARDUINO

Project Specific

3 – 6 Hours

Partial Kit

Digital Pressure Gauge

This project guides you through building a digital pressure gauge using a BMP sensor and an OLED display, powered by an Arduino.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

GY-BMP280-3.3 HIGH PRECISION ATMOSPHERIC PRESSURE SENSOR MODULE Rs. 69.00
0.96 Inch I2C/IIC 4pin OLED Display Module White Rs. 349.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Arduino (unspecified board)
Battery (generic / unspecified)

Browse all components

How It Works

The Digital Pressure Gauge project centers around an Arduino Uno microcontroller that coordinates data acquisition and visual output. At the heart of the sensing subsystem is the BMP280 sensor, which measures atmospheric pressure and temperature through its internal piezoresistive pressure sensing element. The Arduino Uno communicates with the BMP280 sensor and the OLED display using standard communication protocols over connecting wires, fetching raw pressure data from the sensor's registers. Once the microcontroller processes these numerical values, it utilizes the U8g2lib and BMP280 software libraries inside the Arduino IDE environment to render human-readable metrics onto the compact OLED display. Power is supplied to the entire circuit via a 5V DC battery, ensuring the system remains portable. As environmental pressure changes—whether due to weather fluctuations or altitude shifts—the BMP280 detects the minute variations, allowing the Arduino to instantly update the numerical readouts displayed on the screen.

Why Build This

Develop a functional atmospheric monitoring tool applicable to drone telemetry, pipeline air-flow detection, and localized meteorological tracking.

Gain hands-on engineering experience integrating I2C-based digital sensors and graphical display modules with an embedded microcontroller.

Strengthen software development capabilities by implementing third-party hardware libraries in the Arduino IDE to process and visualize real-time physical data.

Real-World Application

Weather prediction, detecting air flow movement through pipelines, and obtaining altitude position with the help of a drone.

Skills You'll Learn

I2C communication protocol

sensor data processing

OLED display rendering

library integration in Arduino IDE

embedded system power management

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

ARDUINO

BMP280

OLED

I2C

SENSORS

PRESSURE MEASUREMENT

TEMPERATURE MEASUREMENT

Frequently Asked Questions

Can I power this project using a standard USB computer connection instead of the 5V DC battery?

Yes, powering the Arduino Uno via a USB cable from your computer provides the necessary 5V and also allows you to upload code and view serial debugging information simultaneously.

Why is the OLED display not showing any text after I uploaded the code?

This usually happens if the I2C wiring (SDA and SCL pins) is incorrect or if the specific display constructor in your U8g2lib code does not match the exact hardware model of your OLED screen.

Do I need to calibrate the BMP280 sensor before taking pressure readings?

The BMP280 comes with factory-calibrated internal compensation registers, so raw data read through the library is already adjusted for high accuracy without manual calibration.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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