E&TC / ECE · Embedded and digital electronics · Final year project
Automated Door Opener With Lighting Control Using Raspberry Pi
An automatic door and lighting controller built on a Raspberry Pi. PIR sensors detect people, the door motor opens automatically, and lights are switched according to the number of people in the room.
What is the Automated Door Opener With Lighting Control Using Raspberry Pi project?
An automatic door and lighting controller built on a Raspberry Pi. PIR sensors detect people, the door motor opens automatically, and lights are switched according to the number of people in the room.
Key facts
- Type
- Final year project · Advanced
- Suitable for
- Diploma capstone and B.E / B.Tech final year
- Build time
- 6 to 8 weeks
- Estimated component cost
- ₹7,000 – ₹10,400
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Automated Door Opener With Lighting Control Using Raspberry Pi works
- 12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V.
- The PIR motion sensor detects human movement from the change in infrared heat.
- The Push buttons and switches provide manual inputs and the power switch.
- The Raspberry Pi 4 runs Linux and the main program, handles the camera, networking and heavier processing such as image recognition.
- The LEDs indicate status.
Block diagram
Inputs
PIR motion sensorPush buttons and switchesController
Raspberry Pi 4Outputs
LEDsComponents 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 |
|---|---|---|---|
| Raspberry Pi 4 (2 GB) | 1 | Runs Linux and the main program, handles the camera, networking and heavier processing such as image recognition. | ₹4,800 |
| PIR motion sensor (HC-SR501) | 1 | Detects human movement from the change in infrared heat. | ₹110 |
| Push buttons and switches | 2 | Provide manual inputs and the power switch. | ₹80 |
| LEDs (assorted) | 1 | Indicate status. | ₹20 |
| 12 V power adapter / step-down transformer | 1 | Supplies stable low-voltage power from the mains. | ₹250 |
| microSD card 32 GB (Class 10) | 1 | Needed for this type of build. | ₹450 |
| Official 5 V 3 A USB-C supply for Raspberry Pi | 1 | Needed for this type of build. | ₹450 |
| I R Transmitter Receiver | 1 | Part from the design specification | ₹150* |
| Mini Door | 1 | Part from the design specification | ₹150* |
| Load(Light) | 1 | Part from the design specification | ₹150* |
| Passive components, PCB and wiring kit | 1 | Resistors (assorted), capacitors (assorted), transistors / MOSFETs, cables, connectors and jumper wires, diodes, PCB / breadboard and ICs and IC sockets. | ₹430 |
| 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 | ₹7,000 – ₹10,400 |
Prices are estimates for budgeting; items marked * depend on the exact size or model chosen. 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 | ₹7,000 – ₹10,400 |
| 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 |
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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 Automated Door Opener With Lighting Control Using Raspberry Pi project?
An automatic door and lighting controller built on a Raspberry Pi. PIR sensors detect people, the door motor opens automatically, and lights are switched according to the number of people in the room.
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 PIR motion sensor detects human movement from the change in infrared heat. The Push buttons and switches provide manual inputs and the power switch. The Raspberry Pi 4 runs Linux and the main program, handles the camera, networking and heavier processing such as image recognition.
Why did you choose a Raspberry Pi instead of an Arduino?
The Raspberry Pi is a full computer with an operating system, so it can run Python, OpenCV and a web server. An Arduino is a microcontroller that is better for simple real-time control but cannot process images or run multiple programs.
How does a PIR sensor detect motion?
It has two pyroelectric elements that see infrared from different zones. When a warm body moves across them, the difference changes and the sensor gives a HIGH output.
Why is a pull-up resistor needed with a push button?
Without it the input pin floats and reads random values. The pull-up keeps it HIGH until the button connects it to ground.
Why is a resistor connected in series with an LED?
It limits the current to a safe value (about 10–20 mA). Without it, the LED would draw too much current and burn out. R = (supply voltage − LED voltage) ÷ current.
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 Raspberry Pi 4 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?
The sensors give digital or analog signals read directly by the controller's I/O and ADC pins, and outputs are driven through transistor or relay drivers.
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.
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