The LilyPad Simple Power is a board that lets you connect a battery (or other power source with a 2-pin JST connector) and switch it on or off, that's it!
Magnets. How do they work? We're going to guess magic. This particular set of magnets are pretty darn strong, are able to rotate freely, and conduct electricity. That's a pretty darn good kind of magic, if you ask me.
This is LilyPad Arduino, the heart of a wearable electronics system! This main board features a ATmega168V preloaded with Arduino, and is ready to connect to a wide variety of wearable, sewable modules!
This is a simple to use light sensor that outputs an analog value from 0 to 5V. With exposure to daylight, this sensor will output 5V.
The LilyPad Battery Connect simply gives you a connection point for a battery or anything else you might want to plug in to your LilyPad system. It consists of a single 2-pin JST connector on a small LilyPad board with positive and negative terminals.
These boards allow you to use your own 5mm LED as a LilyPad LED.