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

February 28, 2022

A gas detector is a device that detects the presence of gases in an area, often as part of a safety system.…

February 28, 2022

Hello friends, I am Chirukesh, and I am a YouTuber, this is a Pulse Oximeter that measures Oxygen Saturation…

February 25, 2022

Most advanced electronics PCB assembly lines have pick and place machines to pick components from an SMD reel and place it on a…

February 25, 2022

Normally we are facing problems with the IR Remote sometimes it may not work and regularly we need to change…

February 25, 2022

I decided to make a 'Pulse Oximeter' because, in this pandemic situation, we need this device a lot. It…

February 25, 2022

In this project, we will make a remote controlled car for real time applications. This robotic car has been…

February 25, 2022

The affordable autonomous and open-source robot provides localization and mapping facilities and safely…

February 25, 2022

An Obstacle Avoidance Robot is an intelligent robot, which can automatically sense and overcome obstacles on…

February 25, 2022

I have made RGB Goggles using WS2812B LEDs and Arduino Nano. The Arduino based Goggles have many different…

February 25, 2022

A lot of intrusion activities/security threats in the army area are seen nowadays. This gave me an idea to…

February 25, 2022

I have built a model of a Modern Smart Home. These features demonstrate what a Smart Home would be like! A…

February 25, 2022

As we have heard many fire accidents take place around us. The Surat fire accident in which many students…