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

June 25, 2021

In this tutorial, we are going to build a handheld game console using Arduino Pro Micro, Arduboy package, and a handful of…

June 24, 2021

Are you fed up with manually logging in to your windows or social media accounts? Wouldn’t it be nice to have a pocket-sized…

June 23, 2021

Digital load scales are another miracle of modern-day engineering and design. Yes, we are talking about the weighing scale we…

June 7, 2021

Ultrasonic sensor, also known as a SONAR sensor is an electronic device that is used to measure the distance of a target object…

June 6, 2021

In 2019, Arduino Platform introduced Arduino Cloud IoT which is an end-to-end solution to help IoT enthusiasts and…

June 4, 2021

The need for home security alarm systems nowadays is a serious demand. As the number of crimes is increasing every day, there…

June 1, 2021

In this project, we will be exploring AD8232 ECG sensor working and will connect it with Arduino to run some analysis on the…

May 28, 2021

Most connected IoT devices today are connected to the internet using a Wi-Fi connection. Although a Wi-Fi connection enables…

May 28, 2021

Automatic Bottle Filling Machines are most commonly used in beverages and soft drink industries. These machines use a conveyor…

May 26, 2021

Obstacle detection is one of the major concerns for a blind person. Presented here is a smart blind stick using Arduino Uno and…

May 8, 2021

An infrared sensor is an electronic module that is used to detect the certain physical appearance of its surroundings by either…

May 7, 2021

Wireless communication is the future of technology! Communication established between two modules opens a large scope of…