500+ DIY Arduino Projects with Code & Circuit Diagram

Arduino is a popular open-source development board used by engineers, hobbyists, and makers to develop electronic projects and prototypes easily. 

The below list consists of a large collection of free Arduino Projects that was built by us here in Circuit Digest. All the projects that we have provided here consist of neatly illustrated Arduino circuit diagrams and detailed explanations, the relevant Arduino code is also provided for a complete do-it-yourself tutorial. If you want more projects you can also check out our collection at Arduino IoT Projects | Arduino Robotics Projects | Arduino AI Projects | Arduino Home Automation Projects | Raspberry Pi Projects | ESP32 Projects

May 31, 2024

You might have seen there are many types of liquid-level sensors available on the market. They are mostly used in…

May 27, 2024

From a simple electronic toothbrush to complicated robotics systems, DC motors are present everywhere. In most of our…

May 6, 2024

Most of us would be familiar with the 16×2 Dot matrix LCD display that is used in most of the projects to display some information to the user.  …

May 3, 2024

Nowadays, there are evolving projects in robotics, and many hobbyists are creating their own robots. For these Robots,…

April 9, 2024

If you've ever worked with the SIM800L module, you know that it can be a powerful tool for various projects, including…

March 19, 2024

Persistence of Vision is a fundamental principle that allows our eyes to perceive continuous motion from separate…

March 10, 2024

For many years, robots have been a popular topic among students, hobbits, and DIYers. If you are a beginner and enjoy building…

March 9, 2024

Road accidents became a matter of concern due to the huge increase in traffic. The primary cause of accidents is due to the…

March 9, 2024

When it comes to liquids, turbidity is an important term. Because it plays an important role in liquid dynamics and is also…

March 9, 2024

In this article, we will learn how to build a touch-based color-changing plant using Arduino. When you touch the plant, the…

March 9, 2024

In recent years, robotics has witnessed significant advancements, enabling the creation of intelligent machines that…

March 8, 2024

In this tutorial, we'll guide you through interfacing an Arduino with an ultrasonic sensor…