Ender3 pro - power OFF mounting box

Re-elaboration of the idea provided by
https://www.thingiverse.com/thing:3333899.
Still uses the high voltage switch so please be careful.

The principle is; when the printer finish its job, it waits for 5 minutes and then move to max z axis. When the Max Z is reached one of the wheel mechanically touch a switch which interrupt the main power.

To make the Printer wait for 5 minutes and reach the max Z at the end of each print, there is a quite straightforward setup on the Cura SW.
Go to Cura--Settings--Printer--Manage Printers--Machine Settings--End G-Code window.
Before the code M84 put the following two lines:

G4 S300 ; wait 5mins to cool nozzle
G0 Z250 ; go up to max height