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

August 24, 2022

Every engineer and hobbyist nowadays has a workbench for all of their tools and gadgets, and…

August 1, 2022

In one of our previous projects, we interfaced SX1278(Ra-02) based LoRa module with Arduino and established…

July 28, 2022

Adding cameras and vision algorithms to your projects and robots might sound cool but sometimes it becomes…

June 30, 2022

In this project, we are going to build an animatronic eye with Arduino. I got the idea to create an animatronic eye…

June 10, 2022

Most heart diseases are associated with and reflected by the sound that the heart produces, and one of the easiest and…

June 6, 2022

IoT and home automation have come a long way since they first gained popularity in 2014, thanks to the debut of a game-…

May 30, 2022

A rotary encoder is a type of electromechanical position sensor that can be used to identify the angular position of…

May 25, 2022

If you are an embedded engineer and working in the electronic industry, every once in a while there will be situations…

May 23, 2022

With the advent of technology, our electronic gadgets and appliances are becoming smaller and smaller with more functional and…

May 23, 2022

Time is vital in today's society, and when it comes to certain electronics, timing is crucial; just like us, they…

May 19, 2022

When we are talking about air pollution, dust and smoke are one of the many reasons for air pollution. Not only that,…

May 18, 2022

Have you ever wondered how the antitheft system in a supermarket works? Or how do automatic…