Previously, I wrote a blog post about how I displayed the count of my unseen Facebook notifications on a 7-segment display connected to the BeagleBone Black : BeagleBone Black displays Facebook notifications on Adafruit 7-segment. I decided to do a similar task with the BeagleBone Black & Adafruit 8x8 LED matrix . My most recent post that shows how it is interfaced with the BBB: Adafruit 8x8 LED matrix controlled by BeagleBone Black.
Here's the Python script that grabs the unseen notification count from the Facebook API and then displays it on the 8x8 matrix . One notification is one pixel.