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Electronics / E&TC projects

Circuits, communication and connected systems.

1D Pong game prototype with a ring of colour LEDs on a cardboard frame, Arduino Uno and breadboard, on a white background
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1D Pong Game with Arduino

This project builds a 1D Pong game on an Arduino Uno: one bright light travels around a ring of colour LEDs, and the player p...

Arduino IDE embedded C firmware Arduino Uno ATmega328P microcontroller 5V USB power bench supply
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4x4x4 LED Cube with Arduino and Shift Registers — project thumbnail preview
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4x4x4 LED Cube with Arduino and Shift Registers

This project builds a 4x4x4 LED cube: 64 LEDs hand-soldered into a three-dimensional grid, driven by an Arduino through 74HC5...

Arduino Uno Arduino IDE 74HC595 shift register
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Adjustable DC Bench Power Supply with Digital Voltage Display — project thumbnail preview
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Adjustable DC Bench Power Supply with Digital Voltage Display

This project builds an adjustable linear DC power supply delivering 0–30 V at up to 3 A, with an adjustable current limit, di...

Linear series-pass regulation 2N3055-class pass transistor · heatsink Digital voltmeter · ammeter modules
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Alcohol Breath Analyzer using MQ-3 Gas Sensor with LCD Readout (Arduino) — project thumbnail preview
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Alcohol Breath Analyzer using MQ-3 Gas Sensor with LCD Readout (Arduino)

This project builds an Arduino-based alcohol breath analyzer using an MQ-3 gas sensor that displays an indicative alcohol-vap...

16x2 character LCD Arduino Uno · ATmega328P Arduino IDE · C/C++ firmware
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Alcohol Detection with Engine Lock using Arduino — project thumbnail preview
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Alcohol Detection with Engine Lock using Arduino

This project builds a drunk-driving prevention prototype: an MQ-3 alcohol sensor samples the driver's breath, and if the read...

16x2 LCD status display Arduino Uno Arduino IDE firmware
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AM Transmitter using Transistor with Electret Microphone — project thumbnail preview
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AM Transmitter using Transistor with Electret Microphone

This project builds a working amplitude-modulation transmitter from a single transistor: a BC547 LC-tank oscillator generates...

AM modulation LC tank oscillator BC547 transistor circuits
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Arduino Automatic Tea Maker with Temperature Control and Brew Timer — project thumbnail preview
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Arduino Automatic Tea Maker with Temperature Control and Brew Timer

An Arduino automatic tea maker is a microcontroller-controlled brewing unit that heats water to a set temperature, steeps tea...

DS18B20 waterproof temperature sensor (±0.5 °C) Arduino IDE Arduino Uno C++ control sketch
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Arduino Digital Clock with Temperature and Humidity Display using DS3231 and DHT22 — project thumbnail preview
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Arduino Digital Clock with Temperature and Humidity Display using DS3231 and DHT22

This project builds an Arduino digital clock that shows accurate time from a DS3231 real-time clock, with temperature and hum...

Arduino Uno DHT22 temperature · humidity sensor Arduino IDE · C++ firmware
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Arduino Digital Voltmeter and Ammeter with OLED Display — project thumbnail preview
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Arduino Digital Voltmeter and Ammeter with OLED Display

This project builds an Arduino Digital Voltmeter and Ammeter with OLED Display that measures DC voltage and current simultane...

Arduino Uno Arduino IDE Resistor-divider voltage sensing
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Electronics / E&TC guides

All guides

How AI Designs Hardware: LLMs, PCB Layout and the Audit That Catches Their Mistakes

OpenAI reported that its GPT-6 Astra model designed a working hardware device in under a week, then admitted manufacturing still needed several rounds of review. This guide explains how a language model designs hardware — requirements, component selection, schematics, PCB layout, firmware and enclosures — where it typically goes wrong, and how a student team audits every output with datasheets, design-rule checks and a written audit log before ordering a board.

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Best 10 Music & Audio Projects Students Actually Build

Ten music and audio projects picked from the published Projectech catalog: an Android music player with sleep timer, a desktop library organizer, a browser audio trimmer, a Spotify playlist recommender, a GTZAN genre classifier, a Carnatic raga recognizer, a Class-D amplifier, an ESP32 Bluetooth audio receiver, an FFT spectrum analyzer and an FM radio receiver. Every entry links to its live project page.

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How AI Vision Guides a Cobot Arm: Cameras, Sorting, Tool Flanges and Human-Safe Pauses

Universal Robots Gen 7 pairs AI-ready arms with camera-guided picking and a data, power and safety tool flange. This guide explains the student-scale version: how a camera frame becomes a pick queue, why colour and shape classifiers beat neural models for a first demo, how tool mounts work, and what human-safe pausing honestly is and is not.

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How to Choose an Op-Amp for Sensor Circuits: Gain, Bandwidth, Offset and Supply

Most sensor projects fail at the amplifier, not the sensor. This guide walks through choosing an op-amp for a sensor circuit: gain versus bandwidth, offset and bias errors, single-supply and rail-to-rail limits, and matching the part to thermocouples, bridges, photodiodes and shunts, with a worked selection example.

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Current Sensing for Student Projects: Shunt Resistors vs Hall Sensors

How to measure current in a student electronics build: shunt-resistor sensing with amplification and high-side versus low-side placement, compared against isolated Hall-effect sensing, with sizing rules, calibration steps, and three practical recipes.

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How Gallium Nitride Power Switches Work: Wide Bandgap, Fast Switching, and Why 300 mm Wafers Change the Economics

Gallium nitride switches power faster and cooler than silicon because its wide bandgap lets a thin layer block high voltage, giving small, fast devices. This guide explains the physics, the three loss mechanisms, how to read a GaN datasheet, and how to benchmark GaN against silicon fairly, plus why Infineon's 300 mm GaN fab announcement matters for cost.

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Frequently Asked Questions

Which platforms do you use?

8051, AVR, PIC, ARM Cortex-M, ESP32 and Raspberry Pi depending on the project. The listing always names the platform.

Do projects include wireless communication?

Many do — LoRa, GSM, Bluetooth, Wi-Fi and RF modules appear across the listings. Check the technologies on the project page.

Will I get PCB layout help?

Schematics and layout guidance are included; fabrication can be arranged as an add-on.

Is the firmware explained?

Yes — commented code plus a document explaining the program flow and the electronics theory behind it.

About Electronics / E&TC projects

Final-year Electronics and Communication projects live at the boundary between circuits and code. Reviewers expect you to understand both: why a sensor behaves the way it does, and what your firmware does with its readings. A project that is only wiring with no signal reasoning, or only code with no hardware understanding, will get pressed in the viva. The sweet spot is a system where the electronics and the embedded logic each do real work.

What Electronics / E&TC students usually build

The most common builds are IoT monitoring and control systems: an IoT Patient Health Monitoring System that reads body parameters and pushes them to a dashboard, or a Dual-Axis Solar Tracker with MPPT where the electronics problem — maximum power point tracking — is genuinely interesting. Robotics is the second big family: a Gesture-Controlled Robotic Arm or a Fire-Fighting Robot forces you to deal with motors, drivers, power budgets, and sensor feedback all at once, which is exactly the kind of integrated thinking the degree is meant to teach. A third family is communication-based projects: wireless sensor networks, RF and LoRa links, and Wi-Fi or GSM reporting. Whatever you pick, make sure there is at least one part of the system where you had to think rather than copy — a calibration step, a filtering algorithm, a power calculation. That is the part you will be asked about.

Technologies and tools worth learning

The microcontroller decision shapes everything else. Our guide ESP32 vs Arduino vs Raspberry Pi: Which Is Best for Final-Year IoT Projects compares them on the criteria that matter for student builds — cost, power, connectivity, and how much debugging pain each one brings. Beyond the board, learn to read datasheets: the guide How to Choose the Right Sensor for Your IoT Project exists because most student projects fail at the sensing stage, not the coding stage. Get comfortable with a multimeter, and with an oscilloscope if your lab has one; being able to check whether a signal is actually present saves days of guessing. For prototyping, plan the path from breadboard to something more permanent early — From Breadboard to PCB: Soldering and Prototyping for Final-Year Projects covers that transition. And keep your firmware organized: even a small project benefits from separating sensor code, communication code, and application logic.

Software vs hardware balance

Every ECE project has both, and the question is where the weight sits. A monitoring system is hardware-heavy at the sensing end and software-heavy at the dashboard end — that balance is usually ideal for this branch. Pure firmware projects, like a signal-processing implementation on a microcontroller, are fine if the algorithm is genuinely yours. Be wary of projects that are really mobile apps with a sensor attached as decoration; your department will see through that. On the other hand, do not over-build the hardware. A clean prototype on a proper PCB with three sensors working reliably is more convincing than a breadboard jungle with twelve sensors where half the readings are noise. Reliability is a feature, and it is the one reviewers test first — they will wiggle your wires.

Choosing scope wisely

Hardware projects have a failure mode software projects do not: parts that do not arrive. Order components early, and always have a fallback plan if a specific sensor is out of stock. Budget for spares — sensors get fried, and a fried sensor the night before the demo with no replacement is how projects die. A team of three to four works well: one person on hardware and interfacing, one on firmware, one on the application or dashboard side, with everyone understanding the full system. Timeline-wise, assume the hardware takes twice as long as you think and the software takes exactly as long as you think. Get the core loop working early — sensor to microcontroller to output — then add features. Final-Year Project Ideas in Electronics (ECE) has more on matching ideas to what your lab can actually support.

A note on how Projectech helps

Projectech builds these projects to order, including the hardware assembly, firmware, and documentation, with an explanation of how the system works so you can defend every part of it. If your lab has specific component constraints or your syllabus emphasizes particular topics, the build can be shaped around them.

Have a different idea? Request a custom project