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

Batteries come with a certain voltage limit and if the voltage goes beyond the prescribed limits while charging or discharging…

In this project, we are going to make a LED Binary Clock Using Arduino. Here we have designed a printed circuit board (PCB) to…

Right from the time of industrial age, we mankind have been rapidly developing. With every progress we also pollute our…

Programming is always fun and Arduino is a wonderful platform if you are just getting started with Embedded programming. In…

Ever heard of Hugh Herr? He is a famous American rock climber who has shattered the limitations of his disabilities; he is a…

Metal Detector is a security device which is used for detecting metals which can be harmful, at various places like Airports,…

LED Blinking is a very common and almost first program for every embedded learner or beginner. In which we blink an LED with…

Suppose you are sitting in a room and feeling cold and you want your heater to be automatically turned on, and then off after…

Using a thermistor is an easy and cheap way to sense the temperature. And to measure the exact temperature with thermistor, a…

Ultrasonic sensor (HC-SR04) is commonly used to find the distance of an object from one particular point. It has been fairly…

The Iconic name “Nokia 5110” itself should have bought memories of the robust Nokia mobile phone which was very popular during…

In today’s modern world, where ever we go we have lots of electronic devices around us. But, out of all, there is only one…