3D Printer Controlled by Octoprint & a Smoke Detector

Shows the design and implementation of a electronic enclosure used to control the power going to a 3D printer. The design uses four relay modules to combine input from Octoprint (via Raspberry Pi), and a standard residential smoke detector to turn on/off the power to the 3D printer.
Raspberry Pi DIN Rail Mount: www.thingiverse.com/thing:450...

[@dustinmeier9753]

I'm running a Wyze Cam for monitoring and a Wyze Plug for a remote E-Stop for now. I like three concept of utilizing the signal wire from a smoke detector. I will likely try to borrow from your set up for my safeties as well.

[@maxreynolds679]

Very nice design & construction.

[@OldePhart]

I love the ingenuity and will be stealing the idea. :) That does beg to become a PCB though doesn't it.
Might I also suggest that a "Click" PLC could do all that discrete logic for a pretty low footprint and price and it can fire LED's or send ascii data to display boards to give you conditional info. It too is Din mount and in the $100 range these things are unreal for what they can do. I think you would enjoy playing with them too which, after all, is why we do these things.:

[@buildbug3979]

Hmmm, thanks for the PLC suggestion. I'll have to check them out, that might have saved some effort and space on this project.

[@kevinm8865]

Which module of Creality 3d printer do you have?