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

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…

March 28, 2022

When it comes to detecting certain changes in weather conditions, it's pretty unpredictable, and rainfall is one of the most…

March 24, 2022

Bluetooth speaker has now become a pretty popular household gadget that we use on a daily basis. So, for today's article, we…

March 17, 2022

If you have ever visited large scale manufacturing companies, the first thing you will notice is that they are all automated.…

March 16, 2022

An infrared proximity sensor or IR Sensor is an electronic device that emits infrared lights to sense some aspect of the…

March 10, 2022

An oscilloscope is an electronic test device that can monitor the steady change of any electrical voltage using two-dimensional…