Raspberry PI (OctoPI) Controlled Power Console for 3D Printer

I wanted to make a power control box similar to the one built by Jeffeb3 (https://www.thingiverse.com/thing:1428478) to control my Prusa i3 and lighting via OctoPi, however I wanted to use all 4 relays on the Sainsmart relay control board, and also wanted 2 always-on outlets. I also did not want to colocate the Raspberry PI 3B inside the power board, instead opting for repurposing a CAT5 cable to carry TTL signals from the Pi to the power control box. All of my code was based on Jeffeb3's work