Arduino Projects: 500+ Tutorials with Code, Circuits & Step-by-Step Guides (2025)

Arduino is a popular open-source development board perfect for creating electronic projects. Our collection features Arduino projects with code, circuit diagrams, and detailed explanations for makers at all skill levels. Whether you're looking for Arduino projects for beginners or advanced applications, you'll find complete DIY tutorials below.

Browse our comprehensive collection of Arduino project ideas built by Circuit Digest. Each tutorial includes:

  • » Step-by-step instructions
  • » Downloadable source code
  • » Detailed circuit diagrams
  • » Troubleshooting tips

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…