A level-up shifter converts the 3.3V logic of the Feather to the power line voltage.

If, say, you need MORE blinky, you can chain these together. For the second Wing,

connect the DIN connection to the first Wing's DOUT. Also connect a ground pin

together and power with an independant 5V supply to keep from loading the power

supply too much.

Our detailed NeoPixel Uberguide has everything you need to use NeoPixels in any

shape and size. Including ready-to-go library & example code for the Arduino

UNO/Duemilanove/Diecimila, Flora/Micro/Leonardo, Trinket/Gemma, Arduino Due

& Arduino Mega/ADK (all versions)

1/15/2016

https://www.adafruit.com/products/2945