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

Wireless communication is the future of technology! Communication established between two modules opens a large scope of…

Who does not love photography! There are lots of subjects in this creative field and each one is unique, let's choose one. How…

India being a sports-loving country loves to watch sports in a group where the whole neighborhood comes and enjoys the sports…

In the era of Internet of Things (IoT), wireless communication is getting increasingly popular in everyday life. Nowadays,…

RFID (short for Radio Frequency Identification) tagging is an ID system that uses electromagnetic waves in radio frequency to…

Motion detection is a common application for intruder alarms, light switches, and other home and industrial automation…

In industrial automation and control, PID controller has become one of the most reliable control algorithms that can be…

If you are a maker like me and looking for some interesting projects online, a milliohm meter is one easy and useful thing you…

If you are an electronic enthusiast like me who wants to tweak around with different electronic circuits, having a decent…

“Good morning. It’s 7 A.M. The weather in Malibu is 72 degrees…” these were the first words of JARVIS when being introduced in…

In this tutorial, we are going to talk about fuses. Back when I was in college and learning about all the cool things in…

ATtiny85 Microcontroller Chip is an affordable and powerful alternative to other Arduino microcontrollers, especially when…