450+ 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 from Circuit Digest. All projects 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 of IoT Projects, ESP32 Projects, Robotics Projects, and Raspberry Pi Projects

August 3, 2018

In this DIY session, we make an Arduino Motor Driver Shield to drive DC motors, stepper motor and Servo Motor. Compatible with…

August 2, 2018

Fire Alarm Systems are very common in commercial building and factories, these devices usual contain a cluster of sensors that…

July 27, 2018

Reed switch is used in many of the real-life applications such as magnetic door switch, laptops, smartphones etc. In this article, we learn about…

July 24, 2018

A Rotary encoder is an input device which helps the user to interact with a system. It looks more like a Radio potentiometer…

July 17, 2018

Building stuff and getting them work, the way we want, has always been sheer fun. While that being agreed, building stuff that…

July 10, 2018

We all know about Electricity energy meters which are installed in everyone’s house or offices to measure the electricity…

July 9, 2018

In this DIY project we make a 3-Channel Arduino Relay Shield Circuit for relay based applications. We designed an isolated PCB…

June 12, 2018

Arduino has been a boon for people who are not from the electronics background to build stuff easily. It has been a great…

June 8, 2018

Be it the long stretched highways or your doctors front door, we have sign boards placed everywhere to provide us information.…

June 7, 2018

You have seen RFID Door Lock Mechanism in some Hotels and other places, where you don’t need a key to unlock the room. You are…

June 5, 2018

“Be a bright spark, lights off till it’s dark!” sometimes we forget to turn off the lights and waste electricity and you must…

May 28, 2018

Controlling LEDs with voice command seems to be a difficult task, but it’s easy and you can quickly build it. We just need an…