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 12, 2019

Consider a fast-moving car, if it suddenly gets hit by another car in opposite direction, the first thing that happens is that…

February 6, 2019

We all know that the Microcontrollers work only with digital values but in real world we have to deal with analog signals. That…

January 24, 2019

Today digital meters are replacing analog meters in every sector whether its electricity meter or taxi fare meter. The main…

January 22, 2019

When it comes to our loved ones, we always want to stay them healthy and fit. But what will happen if they get ill and forget…

January 16, 2019

Robots have slowly started to crawl into our society to make our life simpler. We can already find the six wheeled food…

January 7, 2019

In our previous tutorials, we have learned about SPI and I2C communication between two Arduino boards. In this tutorial we will…

December 24, 2018

In our previous tutorial learned about SPI communication in Arduino. Today we will learn about another Serial Communication…

December 18, 2018

A Microcontroller uses many different protocols to communicate with various sensors and modules. There are many different types…

December 10, 2018

Most of us would be familiar with the 16×2 Dot matrix LCD display that is used in many projects to display some information to…

December 4, 2018

Every Engineer who loves to tinker with electronics at some point of time would want to have their own lab set-up. A Multimeter…

November 30, 2018

Bluetooth is the simplest and most popular protocol for short range wireless communication in embedded systems. Bluetooth is…

November 23, 2018

We all know that, Atmega328 IC is used in Arduino UNO board. This IC is the brain of the Arduino board. Actually, Arduino…