450+ 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 from Circuit Digest. All projects 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 of IoT Projects, ESP32 Projects, Robotics Projects, and Raspberry Pi Projects

July 28, 2015

Robots are playing an important role in automation across all the sectors like construction, military, medical, manufacturing,…

July 17, 2015

Humidity and temperature are common parameters to measure environmental conditions. In this Arduino based project we are going…

July 16, 2015

ARDUINO UNO is an ATMEGA controller based board designed for electronic engineers and hobbyists. Arduino based program…

July 14, 2015

After designing this line follower robot using arduino uno, I have developed this computer controlled robot. It can be…

July 12, 2015

You must have seen automatic door openers in shopping malls and other commercial buildings. They open the door when someone…

July 2, 2015

We all are familiar with dice and often played LUDO or SANP SIDI (Snake & Ladders) game by using dice. Dice is a squire…

June 27, 2015

Ultrasonic sensors are great tools to measure distance and detect objects without any actual contact with the physical world.…

June 23, 2015

While LPG is an essential need of every household, its leakage could lead to a disaster. To alert on LPG leakage and prevent…

June 18, 2015

Line follower Robot is a very simple robot that follows a line, either a black line or a white line. These type of robots are…

June 16, 2015

Thermometers are useful apparatus being used since long time for temperature measurement. In this project we have made an…

June 7, 2015

In this tutorial we are going to interface a DC motor to Arduino UNO and control it's speed using PWM (Pulse Width Modulation)…

June 6, 2015

In this tutorial we are going to interface a seven segment display to ARDUINO UNO. The display counts from 0-9 and resets…