Multiple 3D printer Controller, one Raspberry Pi

How to control multiple 3D printers with one Raspberry Pi:

Replicantfx.com, Controlling Multiple 3D Printers

Like most of you I have been controlling my 3D printers with Octoprint for years. With each new printer came a new Raspberry Pi. So, when I got my 4th printer, I headed to my usual sources to get another Pi to act as a server. It is then that I discovered that the supply shortages of the last few years (circa 2022) had driven the price of a Pi well over $100 USD. I picked my jaw back off the ground and went looking for a solution that wouldn’t cost half the price of my cheapest printer. I started by looking at running multiple Octoprint instances per Pi. I found this could be done through some clever hacking, containers and dockers. Honestly though, I just wanted to print and avoid as many headaches as possible, so I kept looking. Eventually I stumbled on Repetier Sever.
This little software package was exactly what I was looking for. The free version could control up to 5 printers, allows for custom I/O operations, custom event driven G-Code and much more. Browsing around the site I also found that a ready to go Raspberry Pi image was available for download. This was definitely the easy button option. I decided to go for it and was blown away by how simple the whole process was. I salvaged a Raspberry Pi from one of my existing printers and was able to build up the rest of the server for less than $40 USD.

For a complete tutorial, configurations and bill of materials, head to:
Replicantfx.com, Controlling Multiple 3D Printers