https://youtu.be/IXAx29LAVCs
In daily life, we inevitably touch various public facilities, such as the switch of the company’s water dispenser. Since drinking water is everyone’s daily and you need to touch the switch of the dispenser many times a day. In order to avoid cross infection caused by bacterial virus transmission as much as possible, I made the simplest automatic sensor switch on my Arduino UNO and shared it with you.