Final year project season is here — and if you’re an engineering student wondering what to build, you’re in the right place. We’ve handpicked 10 incredible electronics projects that are practical, impressive to examiners, and all doable under ₹2000. Every component is available on INFYNIQS with same-day dispatch.
All 10 Projects at a Glance
Use this table to shortlist a project by difficulty, estimated cost and build time. Costs are estimates for the core parts and will vary with the parts you already have.
| # | Project | Difficulty | Est. Cost | Build Time |
|---|---|---|---|---|
| 1 | Obstacle-avoiding robot | Beginner | ₹850–₹1,100 | 1–2 days |
| 2 | Temperature and humidity monitor | Beginner | ₹600–₹900 | 1 day |
| 3 | Line-following robot | Beginner–Medium | ₹650–₹900 | 1–2 days |
| 4 | PIR home security alarm | Beginner | ₹450–₹650 | Half a day |
| 5 | IoT weather station | Intermediate | ₹850–₹1,200 | 2–3 days |
| 6 | Automatic plant watering system | Beginner | ₹550–₹800 | 1 day |
| 7 | Bluetooth-controlled car | Intermediate | ₹900–₹1,400 | 2 days |
| 8 | Smart energy meter | Intermediate | ₹700–₹1,100 | 2 days |
| 9 | Gesture-controlled robot arm | Advanced | ₹1,400–₹1,900 | 3–5 days |
| 10 | GPS vehicle tracker | Advanced | ₹1,500–₹2,000 | 3–4 days |
How to Choose Your Project
- Short on time: the PIR alarm (#4) and plant watering system (#6) can be built and tested in a day or less.
- Want an IoT project: pick the temperature monitor (#2) or the weather station (#5), both built on the ESP32 with Wi-Fi.
- Want a robotics project: the obstacle-avoiding robot (#1), line follower (#3) and Bluetooth car (#7) share most of their parts, so you can upgrade one into the next.
- Aiming for the highest marks: the robot arm (#9) and GPS tracker (#10) are the most demanding and leave the most to explain in your viva.
1. Obstacle-Avoiding Robot (HC-SR04 + Arduino)
An HC-SR04 ultrasonic sensor acts as the robot’s “eyes,” detecting objects in its path. When an obstacle is detected within 20cm, the L298N motor driver steers the robot away automatically. Simple, visual, and guaranteed to impress.
🟢 Difficulty: Beginner | 💰 Cost: ₹850–₹1,100 | ⏱ Build Time: 1–2 days | Real-world use: Autonomous vehicles, warehouse robots
New to this sensor? Our HC-SR04 working, pinout and Arduino code guide covers the wiring and the distance formula used in this robot.
| Component | Qty | Est. Price |
|---|---|---|
| Arduino UNO R3 | 1 | ₹350 |
| HC-SR04 Ultrasonic Sensor | 1 | ₹65 |
| L298N Motor Driver | 1 | ₹120 |
| DC Gear Motors (pair) | 2 | ₹180 |
| Robot Chassis Kit | 1 | ₹250 |
| 9V Battery + Holder | 1 | ₹80 |
| Total | ~₹1,045 |
2. Smart Temperature & Humidity Monitor (DHT11 + ESP32)
Combine the DHT11 sensor with an ESP32 to build a WiFi-connected monitor that logs data to the cloud. View live readings from anywhere using a mobile app. This project demonstrates IoT, data logging, and wireless communication — three buzzwords examiners love.
🟢 Difficulty: Beginner | 💰 Cost: ₹600–₹900 | ⏱ Build Time: 1 day | Real-world use: Smart homes, industrial monitoring
| Component | Qty | Est. Price |
|---|---|---|
| ESP32 Development Board | 1 | ₹380 |
| DHT11 Temperature Sensor | 1 | ₹55 |
| 0.96″ OLED Display (I2C) | 1 | ₹180 |
| MB-102 Breadboard | 1 | ₹60 |
| Jumper Wires (40pcs) | 1 set | ₹70 |
| Total | ~₹745 |
Tip: the DHT22 is a drop-in upgrade for the DHT11 with a wider measuring range and better accuracy, and the same code works with a one-line change of sensor type.
3. Line-Following Robot (IR Sensor + L298N)
IR sensors detect a black line on a white surface, and your code steers the robot to follow it perfectly. A classic project with a competitive angle — race it against classmates. The L298N motor driver handles both motors independently.
🟡 Difficulty: Beginner–Medium | 💰 Cost: ₹650–₹900 | ⏱ Build Time: 1–2 days | Real-world use: AGV factory robots, hospital delivery bots
What you need
- UNO R3 or Nano R3 board
- 2 × HW-201 IR sensor modules to read the line
- L298N motor driver
- 2 × DC gear motors with wheels and a 2-wheel chassis
- Battery pack and jumper wires
4. PIR-Based Home Security Alarm System
A PIR (Passive Infrared) sensor detects human body heat and motion. When triggered, an Arduino activates a buzzer and LED alert. One of the fastest projects to build and demo — and socially relevant, making it easy to justify to examiners.
🟢 Difficulty: Beginner | 💰 Cost: ₹450–₹650 | ⏱ Build Time: Half a day | Real-world use: Burglary alarm, smart street lighting
| Component | Qty | Est. Price |
|---|---|---|
| Arduino UNO | 1 | ₹350 |
| HC-SR501 PIR Sensor | 1 | ₹75 |
| 5V Buzzer | 1 | ₹30 |
| 5mm LED + 220Ω Resistor | 2 | ₹15 |
| MB-102 Breadboard | 1 | ₹60 |
| Total | ~₹530 |
5. IoT Weather Station with Cloud Dashboard (ESP32 + DHT11)
Connect to ThingSpeak or Blynk for a full weather station with historical graphs. Showcases IoT architecture, cloud integration, and data visualization — everything modern employers look for.
🟡 Difficulty: Intermediate | 💰 Cost: ₹850–₹1,200 | ⏱ Build Time: 2–3 days | Real-world use: Agricultural monitoring, smart city sensors
What you need
- ESP32 development board
- DHT11 or DHT22 temperature and humidity sensor
- Optional: MQ-135 air quality sensor to add an air-quality reading
- Optional: 1.3 inch SH1106 OLED display for a local readout
- MB-102 breadboard and jumper wires
6. Automatic Plant Watering System
A soil moisture sensor reads the water level in soil. When it drops below a threshold, an Arduino activates a relay to turn on a water pump. Simple, green-tech, and extremely viva-friendly. Examiners love sustainability-focused projects in 2026.
🟢 Difficulty: Beginner | 💰 Cost: ₹550–₹800 | ⏱ Build Time: 1 day | Real-world use: Precision agriculture, smart greenhouses
What you need
- UNO R3 or Nano R3 board
- Soil moisture sensor module
- 5V single-channel relay module to switch the pump
- Small 5V submersible water pump with tubing
- 400-point breadboard and jumper wires
7. Bluetooth-Controlled Car (ESP32 BLE + Android App)
Use the ESP32’s built-in Bluetooth (no extra module needed!) to build a robot car controlled from your Android phone. A free app sends commands to the ESP32, which drives the L298N motor driver. Wireless demos always wow examiners.
🟡 Difficulty: Intermediate | 💰 Cost: ₹900–₹1,400 | ⏱ Build Time: 2 days | Real-world use: ROV robots, defense, search-and-rescue
Power tip: the L298N loses roughly 2 V across its output stage, so a single 3.7 V cell will not drive the motors well. Use two 18650 cells in series (about 7.4 V) for the motors, and remember that a TP4056 module charges one cell at a time.
| Component | Qty | Est. Price |
|---|---|---|
| ESP32 Development Board | 1 | ₹380 |
| L298N Motor Driver | 1 | ₹120 |
| DC Gear Motors + Wheels | 4 | ₹360 |
| Robot Chassis (4-wheel) | 1 | ₹280 |
| Li-Ion Battery + TP4056 Charger | 1 | ₹180 |
| Total | ~₹1,320 |
8. Smart Energy Meter with OLED Display
Measure real-world AC current and voltage using a current sensor, display live power consumption on an OLED screen, and estimate monthly electricity bills. Directly relevant to India’s power sector and resonates strongly with evaluators.
🟡 Difficulty: Intermediate | 💰 Cost: ₹700–₹1,100 | ⏱ Build Time: 2 days | Real-world use: Household monitoring, EV charging management
What you need
- ESP32 or UNO R3 board
- Current sensor module (for example an ACS712 or a clip-on SCT-013)
- 1.3 inch SH1106 OLED display
- MB-102 breadboard and jumper wires
Safety first: this project involves mains voltage, which can kill. Work only under the supervision of your guide or lab staff, use an isolated sensor, keep all mains wiring enclosed, and demo with a low-power load.
9. Gesture-Controlled Robot Arm (SG90 Servo + Arduino)
Flex sensors on a glove detect finger bends, and SG90 servo motors replicate the motion on the robot arm. The most visually stunning project on this list — perfect for impressing visiting professors at project expos.
🔴 Difficulty: Advanced | 💰 Cost: ₹1,400–₹1,900 | ⏱ Build Time: 3–5 days | Real-world use: Prosthetic limbs, bomb disposal robots
| Component | Qty | Est. Price |
|---|---|---|
| Arduino UNO | 1 | ₹350 |
| SG90 Servo Motor | 5 | ₹450 |
| Flex Sensors | 5 | ₹500 |
| Breadboard + Wires + Resistors | 1 set | ₹160 |
| Total | ~₹1,460 |
10. GPS Vehicle Tracker with SMS Alert (ESP32)
An ESP32 connected to a GPS module tracks a vehicle’s real-time location. When the vehicle leaves a predefined zone, it sends an SMS alert with a Google Maps link. Instantly relatable — examiners can imagine using it themselves.
🔴 Difficulty: Advanced | 💰 Cost: ₹1,500–₹2,000 | ⏱ Build Time: 3–4 days | Real-world use: Fleet management, stolen vehicle recovery
Before you buy: the SIM800L is a 2G-only module, so use a SIM from an operator that still runs a 2G network in your area (Jio SIMs will not work). It also needs its own 3.4–4.4 V supply that can deliver 2 A bursts; powering it from the ESP32’s 3.3 V pin causes resets.
| Component | Qty | Est. Price |
|---|---|---|
| ESP32 Development Board | 1 | ₹380 |
| NEO-6M GPS Module | 1 | ₹380 |
| SIM800L GSM Module | 1 | ₹450 |
| TP4056 Li-Ion Charger | 1 | ₹75 |
| Li-Ion 18650 Battery | 1 | ₹180 |
| Total | ~₹1,465 |
Viva Survival Tips
For every project, prepare answers to these 3 questions: (1) What real problem does this solve? (2) How would you scale it commercially? (3) What is the biggest limitation and how would you overcome it?
✅ Pro tip: Prototype every project on a breadboard first — it is easy to modify and debug before your final demo day. Only motor leads and modules supplied with loose header pins need a few solder joints.
Buy All Components from INFYNIQS
Get everything you need at one place — INFYNIQS stocks ESP32, Arduino UNO, L298N motor driver, HC-SR04, DHT11, SG90 servo motors, PIR sensors, TP4056, and more. Browse sensor modules, development boards, motors and drivers and batteries. Free shipping on orders above ₹599. Same-day dispatch across India.
Frequently Asked Questions
Which final year electronics project is the easiest to build?
The PIR-based security alarm is the easiest — you can have it working in under 3 hours with basic Arduino knowledge. The automatic plant watering system is also a great beginner-friendly choice.
Can I build these projects without coding knowledge?
All projects use Arduino, which has a beginner-friendly IDE and thousands of free code examples online. If you can copy and upload code, you can build any of these projects. Spend 1–2 days learning Arduino basics before starting.
Which project impresses examiners the most?
The gesture-controlled robot arm (#9) and GPS vehicle tracker (#10) score highest on innovation. The IoT weather station (#5) is great for demonstrating cloud connectivity and modern tech knowledge.
Where can I buy electronics components for projects in India?
INFYNIQS (infyniqs.com) stocks all components listed above — ESP32, L298N, HC-SR04, DHT11, SG90 servos, TP4056, PIR sensors, and more. Free shipping above ₹599. Most items ship same day.
Do I need to solder for these projects?
Very little. Most of the wiring in all 10 projects can be done on a breadboard with jumper wires. You will need a few solder joints for motor leads and for modules that ship with loose header pins, which is often the case for GPS and GSM boards. For the final submission, soldering the circuit onto a project board makes it more reliable.
[…] For short-range obstacle detection, see the HW-201 IR obstacle avoidance sensor; for detecting people, the HC-SR501 PIR motion sensor. Browse all sensor modules, or get project ideas from 10 best final year electronics projects under ₹2000. […]