LilyPad Reed Switch Hookup Guide
What is a Reed Switch?
Before we learn how to use the LilyPad Reed Switch, let's learn how reed switches work.
A reed switch is a simple mechanical switch that is activated via a magnet. Two thin pieces of metal inside are nearly, but not quite, touching. When the device is exposed to a magnetic field, the two ferrous materials inside the switch pull together, and the switch closes.
You can learn more about momentary switches over at our Switch Basics tutorial.