title: OctoTray
description: Linux PyQt tray application to control OctoPrint
parent: 3d-printing
position: 35
comments: true
github: https://git.xythobuz.de/thomas/OctoTray
date: 2021-05-08
---

<span class="listdesc">[...back to 3D-Printing overview](3d-printing.html)</span>

To quickly print new stuff on one of my printers, I am using the [OctoPrint](https://octoprint.org) integration of [PrusaSlicer](https://github.com/prusa3d/PrusaSlicer).
Unfortunately, it does not allow me to turn on the printers power supply using the Raspberry Pi.
But it is possible to do that via the [OctoPrint REST API](https://docs.octoprint.org/en/master/api/index.html).
Because of that, I wrote a small tool to trigger the power of my printers that lives in the system tray.
It runs on Linux using the Python Qt5 bindings.

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lightgallery([
    [ "img/octotray_1.png", "Screenshot of first OctoTray version" ]
])
%-->

You need to enter the hostnames / IPs and the API keys of your printers at the beginning of the python file in the repo.
The program will automatically detect if you are using the [PSU Control OctoPrint Plugin](https://plugins.octoprint.org/plugins/psucontrol/) it will use that to toggle the power.
Otherwise it looks for custom system commands, named "all on" and "all off", as described in the [OctoPrint docs](https://docs.octoprint.org/en/master/configuration/config_yaml.html#system).
Mine look like this.

    system:
        actions:
        -   action: all on
            command: gpio -g mode 20 out && gpio -g write 20 0 && gpio -g mode 26 out
                && gpio -g write 26 0
            name: Turn on printer & lights
        -   action: all off
            command: gpio -g write 20 1 && gpio -g mode 20 in && gpio -g write 26 1 &&
                gpio -g mode 26 in
            confirm: You are about to turn off the printer and the lights.
            name: Turn off printer & lights
        -   action: lights on
            command: gpio -g mode 20 out && gpio -g write 20 0
            name: Turn on lights
        -   action: lights off
            command: gpio -g write 20 1 && gpio -g mode 20 in
            name: Turn off lights
        -   action: printer on
            command: gpio -g mode 26 out && gpio -g write 26 0
            name: Turn on printer
        -   action: printer off
            command: gpio -g write 26 1 && gpio -g mode 26 in
            confirm: You are about to turn off the printer.
            name: Turn off printer

You can find the project [on my Gitea server](https://git.xythobuz.de/thomas/OctoTray) or on [GitHub](https://github.com/xythobuz/OctoTray).

I also wrote a bit more about my OctoPrint setups [on this page](octoprint.html).