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

May 11, 2022

A color sensor is a simple, and easy-to-use device that can be used to identify the color of an object and after…

May 10, 2022

In one of our basic projects, we have shown you how you can interface a MAX30102 Pulse Oximeter and Heart Rates Sensor…

May 9, 2022

Sensors now play an essential role in the safety and security of a wide range of flats, houses, and businesses by…

May 8, 2022

I know making a clock sounds a little irrelevant, especially nowadays because we all have smartphones and no one is going to…

May 6, 2022

Thermistors are simple, inexpensive, and accurate components that make it easy to get…

April 21, 2022

For one of our projects at circuit digest, we wanted to build a Persistence of Vision Display or POV display with WS2812B LEDs…

April 13, 2022

If you are looking for an inexpensive, accurate, easy-to-use temperature sensor, then LM35 is an excellent choice. It has an…

April 12, 2022

Planning to buy a small voice recorder to record voices or sounds in an environment and store them in its memory? Think again!…

April 11, 2022

A Hall effect sensor or Hall sensor is a magnetic non-contact sensor that generates an electrical signal proportional to the…

April 8, 2022

In this digital age, we come across LCDs all around us from simple calculators to smartphones, computers and television sets,…

April 1, 2022

There are multiple Lithium batteries available in the market with larger options in capacity. However, as we all know lithium…

April 1, 2022

Nowadays, sensors play a major role in the safety and security of many different apartments, homes and offices by detecting…