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.
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
| 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 |
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
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 |
| 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
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
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
| 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
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
| 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: All 10 projects can be built on a breadboard without any soldering — easy to modify and debug before your final demo day.
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. 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 (www.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?
No! All 10 projects can be built on a breadboard without any soldering. For the final submission, you may optionally solder connections for stability, but it is not required for the demo.