I miss a possibility to turn of the printer without pulling the plug.
At the moment I’m using a switchable plug like this one:
Another idea is to exchange the powercable to a switchable one.
Also a good idea: a (lighted) switch that is mounted at the printer perhaps with a C14-style plug (for PC-power cable), somebody has already build some plasticholder: thingiverse.com/thing:601113
But I think really cool would be a relay-kind of switch that is controlled by software.
There are some M-codes in order to switch a power supply on or off (see reprap.org/wiki/G-code).
[code]M80: ATX Power On
Example: M80
Turns on the ATX power supply from standby mode to fully operational mode. No-op on electronics without standby mode.
Note: some firmwares, like Teacup, handle power on/off automatically, so this is redundant there. Also, see RAMPS wiring for ATX on/off
M81: ATX Power Off
Example: M81
Turns off the ATX power supply. Counterpart to M80. [/code]
The controller with the LCD-Display is powered through USB whether the power of the printer is switched on or off. So it should be possible to alter the G-Code start sequence to add M80 in order to switch poswer on…
As it’s stated it’s an ATX Power Off. Without a suitable power supply and a standby mode on the controller board it won’t work.
On the other hand, your printer would never be fully switched off. I find it more secure to use a real power switch.