Simple LED Butterfly Pin

A simple pin with a back-lit butterfly that slowly fades colors in-and-out. This is like a smaller, cheaper, easier to assemble version of my Neopixel Butterfly Brooch, here on [thingiverse](https://www.thingiverse.com/thing:2783280). Attaches to clothing with a magnetic clasp.

Powered by a CR2032 coin cell battery in a Lilypad battery holder/switch. The cover/lid snaps onto the case. Parts cost < $20 USD. Get the slow-fade RGB LED @[adafruit](https://www.adafruit.com/product/679)

3D print time: about 2.5 hours
Assembly: < 45 min

See blog post at [thisoldgeek.blogspot.com](http://thisoldgeek.blogspot.com/2019/02/butterfly-pin.html)