E&TC / ECE · Embedded and digital electronics · Final year project
Portable PM10 PM2.5 Pollution Analyzer
A handheld analyser that measures fine dust particles. An Arduino Uno reads a PM sensor and displays PM2.5 and PM10 levels so users know when the air is unsafe.
What is the Portable PM10 PM2.5 Pollution Analyzer project?
A handheld analyser that measures fine dust particles. An Arduino Uno reads a PM sensor and displays PM2.5 and PM10 levels so users know when the air is unsafe.
Key facts
- Type
- Final year project · Beginner to intermediate
- Suitable for
- Diploma capstone and B.E / B.Tech final year
- Build time
- 3 to 4 weeks
- Estimated component cost
- ₹2,300 – ₹3,400
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Portable PM10 PM2.5 Pollution Analyzer works
- 12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V.
- The 4×4 matrix keypad lets the user enter a PIN, amount or settings.
- The Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs.
- The 0.96-inch OLED display shows readings and graphics on a compact, high-contrast screen.
Block diagram
Inputs
4×4 matrix keypadController
Arduino Uno R3Outputs
0.96-inch OLED displayComponents list and cost
Typical prices from Indian online stores and electronics markets (Lamington Road, Budhwar Peth, SP Road). Buy from one store where you can to save on shipping.
| Component | Qty | What it does | Approx. cost |
|---|---|---|---|
| Arduino Uno R3 | 1 | Reads the inputs, runs the decision logic written in C/C++ and drives the outputs. | ₹550 |
| 4×4 matrix keypad | 1 | Lets the user enter a PIN, amount or settings. | ₹90 |
| 0.96-inch OLED display | 1 | Shows readings and graphics on a compact, high-contrast screen. | ₹250 |
| 12 V power adapter / step-down transformer | 1 | Supplies stable low-voltage power from the mains. | ₹250 |
| Passive components, PCB and wiring kit | 1 | Resistors (assorted), capacitors (assorted), PCB / breadboard and cables, connectors and jumper wires. | ₹310 |
| Wiring, PCB, soldering and enclosure | 1 | Project overhead | ₹450 |
| Demo model base / mounting board | 1 | Project overhead | ₹500 |
| Testing spares and replacements | 1 | Project overhead | ₹300 |
| Estimated total | Varies with brand, quality and city | ₹2,300 – ₹3,400 |
Prices are estimates for budgeting. We confirm the bill of materials when your design is frozen, and components are charged at actual cost with bills.
How much does this project cost?
| Option | What you get | Cost |
|---|---|---|
| Components only | You buy the parts and build it yourself | ₹2,300 – ₹3,400 |
| Hardware / IoT Final Year | Working model or guided build, Circuit diagram and bill of materials, Firmware / code with explanation | from ₹9,999 + components |
| Capstone Project (CPE) | Working project or model, Black book in MSBTE format, Step-by-step explanation | ₹9,999 + components |
| Diploma ITR | 100% working source code, Project report PDF, PPT | ₹1,999 + components |
No GST and no hidden charges. Use the cost calculator for a quote with your deadline and add-ons, or see all plans.
Download the project brief (PDF)
Summary, working, components and cost and viva questions on one branded PDF to show your guide or team. To get it developed, contact us on WhatsApp.
What you submit with this project
- Working model with circuit diagram and program code
- Project report or black book in your university's chapter order (block diagram, circuit, calculations, results)
- Presentation for the review and final viva
- Synopsis for topic approval, if your college asks for one
E&TC / ECE viva questions on this project
What is the aim of the Portable PM10 PM2.5 Pollution Analyzer project?
A handheld analyser that measures fine dust particles. An Arduino Uno reads a PM sensor and displays PM2.5 and PM10 levels so users know when the air is unsafe.
Explain the working of your project in short.
12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V. The 4×4 matrix keypad lets the user enter a PIN, amount or settings. The Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs. The 0.96-inch OLED display shows readings and graphics on a compact, high-contrast screen.
What microcontroller is on the Arduino Uno and what are its key specifications?
The Uno uses the ATmega328P: 8-bit, 16 MHz clock, 32 KB flash, 2 KB SRAM, 14 digital I/O pins (6 PWM) and 6 analog inputs with a 10-bit ADC.
How does the controller read a matrix keypad?
It drives one row LOW at a time and reads the columns. A key press connects a row to a column, so the row-column pair identifies the key with only 8 pins for 16 keys.
What is the advantage of OLED over LCD?
Each pixel emits its own light, so no backlight is needed. It gives better contrast and viewing angles and uses less power for dark screens.
How is 230 V AC converted to 5 V DC for the circuit?
A transformer steps down the voltage, a bridge rectifier converts AC to pulsating DC, a capacitor smooths it and a 7805 regulator gives a steady 5 V.
Explain the block diagram of your project.
The input section senses the real-world quantity, the Arduino Uno R3 processes it according to the program, and the output section displays the result and drives the actuators. The power supply section feeds every block.
Which communication protocols are used between the modules?
I2C for the display, RTC or motion sensor (only SDA and SCL lines). Each protocol was chosen because the module supports it and it uses the fewest pins.
What is the operating voltage of the circuit?
The controller and most sensors work at 5 V (ESP boards and some modules at 3.3 V). A 12 V adapter powers the board, and a regulator steps it down. Motors and relays get their own supply line so they do not reset the controller.
Related projects
Academic use: Project Buddyy offers mentoring, guidance and reference material for learning. You stay responsible for following your institution's academic integrity rules and for understanding everything you submit.
Want to build Portable PM10 PM2.5 Pollution Analyzer?
Send your college, deadline and team size. We confirm the scope, cost and what you will submit.