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

In this project we are going to make Clapper circuit using the concept of ADC (Analog to Digital Conversion) in ARDUINO UNO. We…

Wireless notice board is very selective term for this project, as it has a very wide scope rather than just being a simple…

In this project we are going to design a 3x3x3 LED CUBE and connect it to Arduino UNO to get different patterns. For a…

Previously we have covered many types of Home automations using different technologies like DTMF Based Home Automation, PC…

After developing few popular robotic projects like line follower robot, edge avoiding robot, DTMF robot, gesture controlled…

In this tutorial we will develop a circuit using Force sensor, Arduino Uno and a servo motor. It will be a servo control system where the servo…

Here we are going to establish a communication between an ATmega8 microcontroller and Arduino Uno. The communication…

In this project we will develop a tone generator using Arduino Uno. We will have buttons interfaced with the UNO and…

In this tutorial we will develop a 5V variable voltage source from Arduino Uno. For that we are going use ADC (Analog to…

In this tutorial we are going to develop a circuit using FLEX sensor, Arduino Uno and a Servo motor. This project is a…

In this project we are going to interface 5 RGB (Red Green Blue) LEDs to Arduino Uno. These LEDs are connected in parallel for…

In this project we are going to design an 8x8 LED matrix display, for that we are going to interface an 8x8 LED…