Arduino Nano Projects for Students and Hobbyists

The Arduino Nano is a small, breadboard-friendly microcontroller board based on the ATmega328P. It offers the same core functionality as the Arduino Uno but in a more compact form, making it perfect for wearable, portable, and space-constrained projects.

1. LED Control with Push Button

This simple project demonstrates how to control an LED using a push button input. It’s a great introduction to digital input and output handling.

• Components: Arduino Nano, LED, push button, 220Ω resistor, jumper wires
• Concepts: Digital input/output, basic electronics

2. Temperature Display using LM35 Sensor

Measure and display the surrounding temperature using an LM35 analog temperature sensor and an LCD module.

• Components: Arduino Nano, LM35 sensor, 16x2 LCD, potentiometer
• Concepts: Analog sensing, data display

3. Ultrasonic Distance Measurement

This project measures the distance between the sensor and an obstacle using the HC-SR04 ultrasonic module and displays the result on the Serial Monitor.

• Components: Arduino Nano, HC-SR04 sensor, breadboard, jumper wires
• Concepts: Pulse timing, serial communication

4. Digital Thermometer with OLED Display

Build a compact digital thermometer that uses the DHT11 sensor to read temperature and humidity and shows it on an OLED display.

• Components: Arduino Nano, DHT11 sensor, 0.96" OLED display, wires
• Concepts: I2C communication, environmental monitoring

5. Motion-Activated Light System

Automatically turns ON a light when motion is detected using a PIR sensor, ideal for smart home applications.

• Components: Arduino Nano, PIR sensor, LED, relay module
• Concepts: Automation, sensor interfacing

6. Bluetooth Controlled Car

A small robotic car controlled wirelessly via a smartphone using the HC-05 Bluetooth module.

• Components: Arduino Nano, HC-05 module, L298N motor driver, DC motors, chassis
• Concepts: Wireless communication, motor control, robotics

7. Sound Level Meter

This project uses a sound sensor to measure the surrounding noise level and displays it using LEDs as a visual indicator.

• Components: Arduino Nano, Sound sensor, LEDs, resistors
• Concepts: Analog input, signal processing

8. Smart Dustbin

A smart bin that automatically opens its lid when someone approaches it using an ultrasonic sensor and servo motor.

• Components: Arduino Nano, Ultrasonic sensor, Servo motor, Breadboard
• Concepts: Automation, servo control

9. IoT-Based Weather Monitoring System

Monitors temperature and humidity data using DHT11 and sends the data to the cloud using an ESP8266 Wi-Fi module.

• Components: Arduino Nano, DHT11, ESP8266, jumper wires
• Concepts: IoT, cloud communication

10. Soil Moisture-Based Plant Watering System

Automatically waters plants when soil moisture levels drop below a set threshold. Perfect for agriculture automation projects.

• Components: Arduino Nano, Soil moisture sensor, Relay, Water pump
• Concepts: Agriculture automation, analog sensing

Conclusion

Arduino Nano projects combine compact design with powerful functionality, making them ideal for embedded, wearable, and portable systems. Learners can expand these projects with IoT and automation technologies for more advanced applications.