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 Basic Electronics Projects | Arduino IoT Projects | Arduino Robotics Projects | Arduino AI Projects | Arduino Home Automation Projects | Raspberry Pi Projects | ESP32 Projects

This project is based on a water tank management system. The project name is a Manual And Automatic Water Level Controller…

Students who receive STEM education become critical thinkers, have a higher level of science literacy, and…

Do you feel disturbed when you need to adjust the temperature? The wait is over, the solution is here!…

Coronavirus is the biggest health crisis in the history of humanity and the fight with it continues as new…

Ever wondered if your everyday Arduino boards were just not enough for your tasks, and a Raspberry Pi (RPi) seemed to be…

Thousands of lives are being lost every year due to IEDs (improvise explosive devices). IEDs…

Artificial Intelligence (AI) is changing science fiction into reality and this technology is taking over the…

In this tutorial we are going to make a Touch Capacitive PCB using an ATMega328P IC to control neo pixel led strip.…

As Christmas is around the corner and the essence of it is incomplete without the decoration and the Christmas tree. So,…

Vending machines are very popular nowadays due to their ease of use, multiple use cases, and no human intervention. It can…

There are lots of people working with renewable energy, especially Solar Power. However, the instruments required to properly…

In this article we decided to make a PID Controller based Heater that can be used to control the temperature of…