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

September 1, 2023

Tired of your old Arcade games which all looks and works in the same way? Want to create a…

August 9, 2023

There are many ways to communicate between a product and a user, but the most common and…

July 27, 2023

Hey there, music lovers! We've got something exciting to share with you! We've already…

July 21, 2023

MicroPython is a subset of Python 3 optimized to run on microcontrollers. It provides an…

July 19, 2023

The planet Mars has captivated our imagination for centuries, and the idea of sending…

June 21, 2023

An Arduino hourglass project is a fun and educational project that involves creating a digital hourglass…

June 1, 2023

This sample project was built for the IoT and Edge AI Project Contest 2024. More details can be found on our contest…

May 26, 2023

Shark Tank India - the show which has inspired many Indians to start their own enteprenual…

May 8, 2023

If you're up for a challenge, you could create your own Tetris game using an Arduino and an…

March 8, 2023

A stepper motor is a type of brushless DC motor that divides a full rotation into a number of steps, thus allowing for…

March 6, 2023

The DHT22 temperature and humidity sensor is a versatile and cost-effective sensor used to measure ambient temperature…

March 2, 2023

A 4x4 membrane keypad is a compact and a cost-effective input device that is commonly used…