OctoPrint

OctoPrint is a web interface for your 3D printer. This is the main integration to integrate OctoPrint sensors.

Configuration

Adding OctoPrint to your Home Assistant instance can be done via the user interface, by using this My button:

OctoPrint can be auto-discovered by Home Assistant. If an instance was found, it will be shown as “Discovered”, which you can select to set it up right away.

API Key

For the integration to work, please check that in Octoprint, the plugin Discovery is enabled and in the settings -> printer notifications menu pop-ups are enabled. The Octoprint integration will attempt to register itself via the application keys plugin. After submitting the configuration UI in Home Assistant, open the Octoprint UI and click allow on the prompt.

Binary Sensor

The OctoPrint integration provides the following binary sensors:

• Printing
• Print Error

Sensor

The OctoPrint integration lets you monitor various states of your 3D printer and its print jobs. Supported sensors:

• Current Printer State
• Job Completed Percentage
• Estimated Finish Time
• Estimated Start Time

Camera

The OctoPrint integration provides a camera feed if one is configured in OctoPrint.

Buttons

The OctoPrint integration provides the following buttons:

• Pause Job
• Resume Job
• Stop Job

Troubleshooting

Device is already configured for a second instance

This is typically caused by copying/backup/restoring part of the config files between OctoPrint instances.

1. SSH into the OctoPrint instance that is being added.
2. Edit the config.yaml for the instance (Typically /home/pi/.octoprint)
3. Under plugins/discovery, change the value of upnpUuid to have a different uuid.
4. Restart the OctoPrint service
5. Attempt to add the instance once again.