500+ Arduino Projects with Code - Circuit Diagrams & Tutorials

Browse CircuitDigest’s curated collection of Arduino projects for beginners and advanced makers. Discover practical Arduino project ideas with source code, circuit diagrams, and clear step-by-step explanations. This library of 500+ projects helps you quickly find the right Arduino application for electronics, automation, IoT, robotics, and embedded systems.

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An automatic toll gate system using Arduino revolutionises traditional toll collection by eliminating manual…

Fossil fuels have been consumed rapidly over recent decades, and their availability is decreasing. Because of this,…

Ever wanted to track your bike, car, or even monitor your loved one's location in real-time? Building your own Arduino…

Gas leaks can pose serious safety risks, especially in homes, kitchens, and small commercial spaces. In this project,…

What if you could get an instant SMS alert the moment a fire or smoke is detected at home or office? Through this…

In this project, we’re making an ordinary two-wheeler helmet smart using an RF Transmitter & Receiver. The best…

Have you ever wanted to build your own IoT-based Weather Monitoring Station? Imagine monitoring real-time temperature, humidity levels,…

Ever wished your Arduino could send you an SMS alert when something important happens—like an intruder detected by your…

Walking safely and confidently can be a challenging task for visually impaired individuals, but with the help of…

Are you tired of searching for keys whenever you need to open a door? How about building a smart locking system where…

Building a maze-solving robot is an intresting way to get into the world of robotics and autonomous systems. Imagine…

Have you ever wondered how speed guns measure the speed of moving vehicles or how an athlete's sprint speed is recorded…