Automatic Touch-Free Hand Sanitiser Dispenser w/Arduino Uno, FC-51 Infrared Sensor & 15KG Servo

The video tutorial demonstrates an automatic hand sanitizer using an Arduino Uno board. It includes components like a 15K G torque servo, an FC 51 infrared sensor, and a 7.4 Volt battery. The video shows how the device works by detecting hand proximity and dispensing sanitizer. Despite some imperfections, the device is tested multiple times, and the tutorial concludes with a demonstration of its functionality.

What new insight or understanding did you gain from this video?