It’s a LilyPad board that has a main functionality of adding twinkles for your project. Its size is really small but it has an ATiny microcontroller which is really nice. In order to let that twnkle-fade begins on the LEDs just sew on 4 LEDs, connect a battery and watch what happens. This product is highly recommended since it makes it easy to add twinkling lights for you without any programming needed.
Also, in case you want to reprogram it yourself you can do that since the ICSP programming connectors are broken out on the back.
What is a LilyPad? Basically, it’s a wearable technology, it’s designed in a way that accepts having large connecting pads, this allows them to be sewn into clothing, they’re washable, and also many inputs, outputs, power, and sensor boards are available.
Note: A portion of this sale is given back to Dr. Leah Buechley for continued development and education of e-textiles.