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+ Arduino-based projects helps you quickly find the right Arduino application for electronics, automation, IoT, robotics, and embedded systems.

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Stressful day? Deadlines, noise, overthinking, endless scrolling… sometimes the best thing you can do is pause…

In this project, we integrate the GP2Y0D810Z0F distance sensor to the Arduino UNO and display the detection result on…

A robotic arm is one of the most popular projects that almost every electronics enthusiast tries to build at least once…

By Ashish Spolia

The rapid evolution of the Internet of Things (IoT) has transformed…

By Aman Gandotra 

Find My Book is an AI and IoT-powered Smart Library Management…

By Ashwanth A, Muthiah Karthik S

HestiaGuard Smart Power & Safety System

HestiaGuard is a distributed home…

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…