I mentioned it earlier here in the forums and on G+ I think but here is it described with links and stuff, hopefully to be followed by word and working afterwards. There is a more sophisticated solution out there by @JvdP I think he only posted on G+ yet, see here. What you need 433 MHz transmitter module Examples: Amazon US, Amazon UK, Amazon DE 433 MHz remote controlled outlet Examples: Amazon US, Amazon UK, Amazon DE Jumper cables female-female Examples: Amazon US, Amazon UK, Amazon DE RaspberryPi power supply Examples: Amazon US, Amazon UK, Amazon DE OPTIONAL 433 MHz antenna Examples: Amazon US, Amazon UK, Amazon DE obviously the OpctoPi upgrade for the BigBox or an external RPi Connecting the transmitter to the Pi To connect the transmitter to your Pi you need three jumper cables. Colour does not matter, I used red for power, black for ground and white for signal. Connect the 'VCC' or '+' PIN of the transmitter with a 5V output of the Pi (PIN 2 or 4 of the GPIO). Connect the ground 'GND' PIN of the transmitter to a ground PIN of the Pi (PIN 6, 9, 14, 20 or 25 of the GPIO). Connect the signal 'DATA' PIN of the transmitter to the Pi PIN 8 of the GPIO. Here a picture: In the picture the transmitter has 4 PIN, you might get one that has only three. The froth is to connect the optional antenna. If yours has only three then there is somewhere on the transmitter board a solder point where you have to solder the antenna. Preparing the Pi To be able to only switch our printer off you have to supply your Pi with extra power. Normally the BigBox is designed to supply the Pi from the main PSU so if you use the main switch of you printer your printer AND the Pi turn off. That is what the extra power supply for the Pi is needed for. Just unplug the Pi from the internal power converter and connect the external power supply to it. I pulled the cable through the USB port cut out on the backside: Installing software packages You have to install additional software packages on your Pi. For this to do you need to open a terminal session with your Pi. On Windows use putty, on Mac you can use the terminal app. Once connected install the following packages: git (for getting the packages) WiringPi Raspberry-Remote Here are the commands to get and build all the packages: Code: apt-get install git-core cd git clone git://git.drogon.net/wiringPi cd wiringPi ./build cd git-clone git://github.com/xkonni/raspberry-remote.git cd raspberry-remote make send sudo cp send /usr/local/bin/ Configure the outlets The outlets should have DIP switches to configure their system code and their unit code. Normally there are 5 switches for each: In my case they are labelled 1-5 for the system code and A-E for the unit code. Set the system code to whatever you want. Normally the unit code can be 1 to 5, if you switch A on it is 1, B on is 2 and so on. Set the outlet's unit code to some value. Take care you don't use those codes on any other system you might be using at home or your neighbour or someone else could accidentally switch on and off you outlets! First test Plug in the outlet and open again a terminal connection to your Pi. With the following commands you can switch on and off the outlet (system code 01010, unit code 1): Code: sudo send 01010 1 1 // switch on sudo send 01010 1 0 // switch off You should hear or see the outlet switches on and off when firing one of the commands. Some outlets have an indicator. If not you can plug in a lamp or something to see if it is working. Commands for OctoPrint To be able to switch your printer on and off from OctoPrint you can add system command to OctoPrint or add commands to the control tab. Whatever you like. For adding system commands I recommend using the "System Command Editor" plugin. For adding commands on the control tab I recommend using the "Custom Control Editor" plugin. I added system commands with a confirmation for turning off: Conclusion This way you can switch on and off your printer from OctoPrint. OctoPrint will be always on. It is cheap (the components cost me about 30 € and I had 3 transmitters, 3 outlets), fast to install and easy to set.