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

Avoiding obstacles is a key job in robotics, where autonomous robots aim to reach their destination without bumping…

Waste management has become a pressing global issue as urbanization continues to grow. One…

In this blog, we will learn about how to interface a Passive Infrared sensor (PIR Sensor) or…

In this tutorial, we will learn to Guide you about how you can interface a heartbeat sensor…

Welcome to our blog post on interfacing the WS2811 (5V) RGB LED strip with Arduino! In this guide, we will…

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

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

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

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

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

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

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