Electrical engineering uses Arduino widely, and there are many different applications. Studying Over and Under Voltage Protection Systems, which protect electrical equipment from harmful voltage variations, is done using this technology. Additionally, it makes it possible to create Voltage Protection Systems that safeguard delicate devices. In order to improve safety, Arduino Uno is used in ultrasonic-based obstacle detection and control for cars. Additionally, it enables autonomous navigation for obstacle-avoiding robots by making Path Planning and Destination Planning possible. Arduino is a popular choice for both novices and experts due to its adaptability, simplicity, and cost, which encourages creative projects in electrical engineering.