This project demonstrates the development of a contactless automatic hand sanitizer dispenser using an ultrasonic sensor and a microcontroller (such as Arduino) to detect the presence of a user's ...

Arduino Uno/Mega/Nano – 1 unit Ultrasonic Sensor (HC-SR04) – For detecting hands Servo Motor (SG90) – To control the dispenser mechanism Hand Sanitizer Bottle – With a press pump 12V DC Power Supply ...

This book details cutting-edge technologies, versatile tools, adaptive processes, integrated platforms, and best practices of digitized systems. With the faster maturity and stability of digitization ...