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 21, 2017

Stepper motors are increasingly taking its position in the world of the electronics. Starting from a normal Surveillance camera…

August 20, 2017

In this project, we are going to make an AC Voltage Measuring Device using Arduino, which will measure the voltage of…

August 15, 2017

Stepper motors are increasingly taking its position in the world of the electronics. Starting from a normal Surveillance camera…

August 14, 2017

Detecting motions or movements has always been important in most projects. With the help of the PIR Sensor it has become very…

August 9, 2017

Attendance systems are commonly used systems to mark the presence in offices and schools. From  manually marking the attendance…

August 8, 2017

We all know about Arduino. It is one of the most popular open source micro controller board which is highly useful for doing…

August 7, 2017

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…

August 5, 2017

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

July 31, 2017

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

July 21, 2017

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

July 18, 2017

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

July 4, 2017

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