Welcome to the SeeMeCNC Community

I thought I'd throw this snap-on bracket out there for the group in case anyone is wanting to run their Eris with OctoPrint:

http://repables.com/r/787/

Mount your Pi to it and snap it on the back tower and you're good-to-go. Photos: https://goo.gl/photos/sGec9TcXQrDWDMfT7

Thank you to Oly for the original mount!

That's a really nice design. How are you faring with the autolevel feature?

Auto-leveling seems to work OK. I tend to run it after every print since I am removing the build platform and it doesn't get put back into the exact same orientation every time. Pretty easy if you are using Mattercontrol or Octoprint.

This mount is awesome, thanks for working it up and sharing it.

I wound up stealing power from the "Eris" LED up front. Plenty of Juice to run the pi. I soldered in a parallel line from the circuit board.