It’s been done a few times before, but I wanted to do my own take on a word clock. There are 130 NeoPixels illuminating 130 letters (10 rows of 13 columns). It also includes “Happy Birthday” messages for each member of the household. There are a couple of different display modes (solid color and rainbow chase). I even embedded a DHT22 temperature and humidity sensor so I can poll those values via the Particle Cloud API! Most options are available via the cloud API. I’m almost finished with a mobile web app that will allow easier access for programming all the various options built-in to the clock.
Project details are available from the Hackster.io project page. I haven’t released the source code yet since there’s still some tidying up to do, but will hopefully have it available in the next week or two!
mainly due to all of the soldering I would have to do to get my LEDs together. I saw your neopixel implementation and that really made it a heck of a lot easier!