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

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

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

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

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

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

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

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

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

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

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

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

3D printers have become an essential aspect of quick prototyping and have reached out to a wide range of makers and engineers.…