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 Arduino IoT Projects | Arduino Robotics Projects | Arduino AI Projects | Arduino Home Automation Projects | Raspberry Pi Projects | ESP32 Projects

A stepper motor is a type of DC motor that works in discrete steps and used everywhere from a surveillance camera to…

Solenoids are very commonly used actuators in many process automation systems. There are many types of solenoid, for…

A stepper motor is a type of DC motor that works in discrete steps and used everywhere from a surveillance camera to…

Noise pollution has really started to gain importance due to high population density. A normal human ear could hear sound…

There are several water fountains which unconditionally sprinkle water with some interesting lighting effects. So I wandered…

Analog to digital conversion is a very important task in embedded electronics, as most of the sensors provide output as…

Charlieplexing is a technique of controlling many LEDs using a few I/O pins. Charlieplexing is same as multiplexing, but it…

Designers use many wireless communication systems like Bluetooth Low Energy (BLE 4.0), Zigbee, ESP8266 Wi-Fi Modules, 433MHz RF…

When developing electronic projects, the power supply is one of the most important part of whole project and there is always…

Morse code is a system of communication to encode any character in two different durations of signals called Dots and Dashes.…

Today most of the phones come with gesture control feature to open or close any app, start music, attend calls etc. This is a…

Today any average car consists of around 60 to 100 sensor units in it for sensing and exchanging information. With car…