E&TC / ECE · Embedded and digital electronics · Final year project
Wearable Oscilloscope Smart Watch
A smartwatch with a built-in low-frequency oscilloscope for signals up to about 20 kHz, so electronics students and technicians can view waveforms on their wrist.
What is the Wearable Oscilloscope Smart Watch project?
A smartwatch with a built-in low-frequency oscilloscope for signals up to about 20 kHz, so electronics students and technicians can view waveforms on their wrist.
Key facts
- Branch
- Electronics & Telecommunication (E&TC / ECE); also suits Electrical, Instrumentation
- Type
- Final year project · Intermediate
- Suitable for
- Diploma capstone and B.E / B.Tech final year
- Build time
- 4 to 6 weeks
- Estimated component cost
- ₹2,700 – ₹3,900
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Wearable Oscilloscope Smart Watch works
- Rechargeable battery supplies the circuit; a regulator gives the controller and sensors a steady 5 V.
- The Temperature sensor measures the temperature that the system monitors or controls.
- 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.
- The LEDs indicate status.
Block diagram
Inputs
Temperature sensorController
Arduino Uno R3Outputs
0.96-inch OLED displayLEDsComponents 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 |
| Temperature sensor (LM35 / DS18B20) | 1 | Measures the temperature that the system monitors or controls. | ₹90 |
| 0.96-inch OLED display | 1 | Shows readings and graphics on a compact, high-contrast screen. | ₹250 |
| LEDs (assorted) | 1 | Indicate status. | ₹20 |
| Rechargeable battery (12 V 1.3–7 Ah) | 1 | Stores energy and supplies power when mains is absent. | ₹650 |
| 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 | ₹2,700 – ₹3,900 |
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 | ₹2,700 – ₹3,900 |
| 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 Wearable Oscilloscope Smart Watch project?
A smartwatch with a built-in low-frequency oscilloscope for signals up to about 20 kHz, so electronics students and technicians can view waveforms on their wrist.
Explain the working of your project in short.
Rechargeable battery supplies the circuit; a regulator gives the controller and sensors a steady 5 V. The Temperature sensor measures the temperature that the system monitors or controls. 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 LM35 temperature sensor work?
LM35 gives an analog output of 10 mV per °C, so 250 mV means 25 °C. The controller reads it with the ADC and converts the value to degrees.
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.
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 do you calculate battery backup time?
Backup time (hours) ≈ battery capacity (Ah) × voltage × 0.8 efficiency ÷ load power (W). For example, 12 V 7 Ah at 20 W gives about 3.3 hours.
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), a single-wire digital protocol for the temperature sensor and analog inputs read by the ADC for the analog sensors. 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). The battery 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%. Battery capacity is the energy needed per day divided by the battery voltage and allowable depth of discharge.
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.
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 Wearable Oscilloscope Smart Watch?
Send your college, deadline and team size. We confirm the scope, cost and what you will submit.