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!