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

April 24, 2019

Modbus is a Serial Communication protocol which was discovered by Modicon in 1979 and it is used for transmitting data over…

April 23, 2019

There are several critical machines or expensive equipments which suffer damages due to vibrations. In such a case, a vibration…

April 18, 2019

Choosing a communication protocol for communication between microcontrollers and peripheral devices is an important part of…

April 17, 2019

Digital wall Clocks are getting more popular now days and they are better than analog clock as it provides accurate time in…

April 16, 2019

In some applications, user input is required to control the functions of a device. There are different kinds of user input…

April 9, 2019

Cameras have always dominated the electronics industry as it has lots of applications such as visitor monitoring system,…

March 12, 2019

Obstacle Avoiding Robot is an intelligent device that can automatically sense the obstacle in front of it and avoid them by…

March 8, 2019

Humans and machines interact and communicate with one other in many possible ways, computers have monitor, keyboard and mouse,…

February 20, 2019

The advancement in Electric Vehicles, Drone and other mobile electronics like IoT Devices seems to be promising for the future…

February 20, 2019

It is expected that by 2020 we will have 25 Billion devices connected to the internet. To give you an idea that is more than…

February 18, 2019

Choosing a communication protocol for communication between microcontrollers and peripheral devices is an important part of…

February 14, 2019

In previous tutorials we have learned about ZigBee protocol and its architecture, and also learned about wireless communication…