E&TC / ECE · Solar and power electronics · Final year project
Smart E Glasses For Voltage Measurement
Smart glasses that display voltage readings to an electrician while working. A Raspberry Pi measures the voltage and projects it in the glasses, so hands stay free during testing.
What is the Smart E Glasses For Voltage Measurement project?
Smart glasses that display voltage readings to an electrician while working. A Raspberry Pi measures the voltage and projects it in the glasses, so hands stay free during testing.
Key facts
- Branch
- Electronics & Telecommunication (E&TC / ECE); also suits Electrical, Instrumentation
- 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
- ₹7,300 – ₹10,800
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Smart E Glasses For Voltage Measurement works
- 12 V power adapter / step-down transformer supplies the circuit; a regulator gives the controller and sensors a steady 5 V.
- The Push buttons and switches provide manual inputs and the power switch.
- The Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs.
- The Bluetooth module links the circuit to a smartphone app so the user can send commands or receive readings.
- The LEDs indicate status.
Block diagram
Inputs
Push buttons and switchesController
Arduino Uno R3Communication
Bluetooth moduleOutputs
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 |
|---|---|---|---|
| Arduino Uno R3 | 1 | Reads the inputs, runs the decision logic written in C/C++ and drives the outputs. | ₹550 |
| Push buttons and switches | 2 | Provide manual inputs and the power switch. | ₹80 |
| Bluetooth module (HC-05) | 1 | Links the circuit to a smartphone app so the user can send commands or receive readings. | ₹280 |
| LEDs (assorted) | 1 | Indicate status. | ₹20 |
| 12 V power adapter / step-down transformer | 1 | Supplies stable low-voltage power from the mains. | ₹250 |
| Mild steel frame and fabrication | 2 | Forms the main structure that holds all parts. | ₹5,000 |
| Pro Mini | 1 | Part from the design specification | ₹150* |
| Multimeter | 1 | Part from the design specification | ₹150* |
| Probes | 1 | Part from the design specification | ₹150* |
| Display | 1 | Part from the design specification | ₹150* |
| Lens | 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 | ₹7,300 – ₹10,800 |
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 | ₹7,300 – ₹10,800 |
| 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 Smart E Glasses For Voltage Measurement project?
Smart glasses that display voltage readings to an electrician while working. A Raspberry Pi measures the voltage and projects it in the glasses, so hands stay free during testing.
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 Push buttons and switches provide manual inputs and the power switch. The Arduino Uno R3 reads the inputs, runs the decision logic written in C/C++ and drives the outputs. The Bluetooth module links the circuit to a smartphone app so the user can send commands or receive readings.
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.
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.
How does the HC-05 Bluetooth module communicate with the microcontroller?
It uses UART serial at 9600 baud by default. Data typed in the phone app is received by the module and passed to the controller's RX pin as serial characters.
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 Arduino Uno R3 processes it according to the program, and the output section acts locally and sends the data or alert wirelessly. The power supply section feeds every block.
Which communication protocols are used between the modules?
UART (serial) for the GSM, GPS, Bluetooth or fingerprint modules. 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.
How did you calculate the power rating of your system?
Using P = V × I for each load, adding a margin of 20 to 25%.
What is the difference between accuracy and precision?
Accuracy is how close a reading is to the true value. Precision is how close repeated readings are to each other. A sensor can be precise but inaccurate if it is not calibrated.
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Want to build Smart E Glasses For Voltage Measurement?
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