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

It’s all started with a small game from the dark ages called “Mario”, right from the time of being a tiny little guy jumping on…

We all are quite familiar with Electronic Voting Machines, where your vote gets registered electronically and you don’t need to…

Security is a major concern in our day to day life, and digital locks have become an important part of these security systems.…

Security is a major concern in our day to day life, and digital locks have become an important part of these security systems.…

In this project we are going to build a piece of entertainment using Arduino. We all have that habit of tapping Table or Pen…

As Engineers/Developers we always rely upon the data collected to design or improve a system. Recording data and analyzing them…

Arduino is an excellent way to simplify and speed up your microcontroller projects, thanks to its community of developers…

Today we are here with an interesting project in which we will Send Data to the SparkFun server using Arduino and GPRS. This is…

Ever wanted to build a Face Tracking Robotic Arm or Robot by simply using Arduino and not any other programming like OpenCV,…

An earthquake is an unpredictable natural disaster that causes damage to lives and property. It happens suddenly and we cannot…

The Arduino Development Platform was originally developed in 2005 as an easy-to-use programmable device for art design projects…

Welcome to another project in which we will build a small Robot which can walk and dance. The project aims in teaching you how…