How to Use a Reed Switch with Arduino (Lesson #30)

This video tutorial explains how to use a reed switch with an Arduino. It covers the basic structure and function of reed switches, including their non-contact sensing capabilities and various applications. The tutorial provides detailed instructions on wiring the switch to an Arduino and programming it to control an LED. The video also highlights different types of reed switches and their uses, such as window and door sensors or pet collar tags.

How can a Reed switch be used in a project involving a pet collar?

What is the purpose of the 10K ohm pull-down resistor in the circuit?