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

September 18, 2022

When you require a dynamic lighting solution, LED strips are a great choice. They may be…

September 14, 2022

Detecting the amount of light in the ambiance is necessary for many areas of our everyday…

September 13, 2022

When it comes to adding a display to your next project there are many options to choose from like OLED, 16x2 LCD, Seven…

September 5, 2022

When thinking about the best way to control games, drones, robots, etc, the first control…

August 30, 2022

Proximity sensing is a common application for intruder alarms, light switches, and other…

August 24, 2022

Every engineer and hobbyist nowadays has a workbench for all of their tools and gadgets, and…

August 1, 2022

In one of our previous projects, we interfaced SX1278(Ra-02) based LoRa module with Arduino and established…

July 28, 2022

Adding cameras and vision algorithms to your projects and robots might sound cool but sometimes it becomes…

June 30, 2022

In this project, we are going to build an animatronic eye with Arduino. I got the idea to create an animatronic eye…

June 10, 2022

Most heart diseases are associated with and reflected by the sound that the heart produces, and one of the easiest and…

June 6, 2022

IoT and home automation have come a long way since they first gained popularity in 2014, thanks to the debut of a game-…

May 30, 2022

A rotary encoder is a type of electromechanical position sensor that can be used to identify the angular position of…