I finally finished up the video for PSU Control with OctoPrint on a Raspberry Pi and using a 5v relay to control the power of your 3D printer.
This will allow you to keep your Octoprint setup running, without the printer being powered on all the time when not in use.
Just log into your OctoPrint web console and power up the printer when you are ready.
I also have a brief write up, with links to all items as well as 3D printed parts in use.