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 Basic Electronics Projects | Arduino IoT Projects | Arduino Robotics Projects | Arduino AI Projects | Arduino Home Automation Projects | Raspberry Pi Projects | ESP32 Projects

“Good morning. It’s 7 A.M. The weather in Malibu is 72 degrees…” these were the first words of JARVIS when being introduced in…

In this tutorial, we are going to talk about fuses. Back when I was in college and learning about all the cool things in…

ATtiny85 Microcontroller Chip is an affordable and powerful alternative to other Arduino microcontrollers, especially when…

In this tutorial, we are going to build an easy and cheap Pedometer using ATtiny85 IC, MPU6050 Accelerometer & Gyroscope,…

The ATtiny family is a series of one of the smallest microcontrollers in the AVR market. These microcontrollers are capable of…

An electronic scoreboard is one of the most important gadgets anybody can have during any sports tournament. Old manual…

The earth’s Atmospheric CO2 level is increasing day by day. The global average atmospheric carbon dioxide in 2019 was 409.8…

Over the course of a few years, RGB LEDs are getting popular day by day due to its beautiful color, brightness, and enticing…

The increasing concentration of carbon dioxide in the air has become a serious problem now. According to the NOAA report, the…

Because of the COVID-19 virus, human lives and livelihoods change extensively and the only way to minimizing the spread of the…

Air pollution is a major issue in many cities and the air quality index is getting worse every day. According to the World…

Li-Fi (Light Fidelity) is an advanced technology that allows transferring data using optical communication such as visible…