Arduino Projects: 500+ Tutorials with Code, Circuits & Step-by-Step Guides (2025)

Arduino is a popular open-source development board perfect for creating electronic projects. Our collection features Arduino projects with code, circuit diagrams, and detailed explanations for makers at all skill levels. Whether you're looking for Arduino projects for beginners or advanced applications, you'll find complete DIY tutorials below.

Browse our comprehensive collection of Arduino project ideas built by Circuit Digest. Each tutorial includes:

  • » Step-by-step instructions
  • » Downloadable source code
  • » Detailed circuit diagrams
  • » Troubleshooting tips

Programming is always fun and Arduino is a wonderful platform if you are just getting started with Embedded programming. In…

Ever heard of Hugh Herr? He is a famous American rock climber who has shattered the limitations of his disabilities; he is a…

Metal Detector is a security device which is used for detecting metals which can be harmful, at various places like Airports,…

LED Blinking is a very common and almost first program for every embedded learner or beginner. In which we blink an LED with…

Suppose you are sitting in a room and feeling cold and you want your heater to be automatically turned on, and then off after…

Using a thermistor is an easy and cheap way to sense the temperature. And to measure the exact temperature with thermistor, a…

Ultrasonic sensor (HC-SR04) is commonly used to find the distance of an object from one particular point. It has been fairly…

The Iconic name “Nokia 5110” itself should have bought memories of the robust Nokia mobile phone which was very popular during…

In today’s modern world, where ever we go we have lots of electronic devices around us. But, out of all, there is only one…

Sensors have always been a vital component in any Project. These are the ones which convert the real real-time environmental…

In this project we control direction and speed of a 24v high current motor using Arduino and two relays. No power switches…

Recently Gesture controlled Laptops or computers are getting very famous. This technique is called Leap motion which enables us…