Why is my Duet-powered printer offline?

Written By Albert Møller Nielsen

Last updated About 8 hours ago

Why is my Duet-powered printer offline?

Beta: This integration is experimental with limited support.

This guide helps troubleshoot offline issues with the SimplyPrint Duet3D integration.

The integration runs as a service on a separate device (like a Raspberry Pi) that connects to your Duet board over your network.

Quick reference

SymptomLikely causeSolution
Offline after rebootService not runningStart the service
"Connection refused"Wrong IP or passwordCheck configuration
Never connectedDidn't run autodiscoverRun autodiscover

Quick fixes

First: Try restarting the integration service.
sudo systemctl restart simplyprint-duet3d.service

1. Is the integration running?

systemctl status simplyprint-duet3d.service

To start:

sudo systemctl start simplyprint-duet3d.service

View logs:

journalctl -u simplyprint-duet3d.service -f

2. Check configuration

Config file: ~/.config/SimplyPrint/DuetConnector.json

SettingWhat to check
duet_uriYour Duet's IP (e.g., "http://192.168.1.100")
duet_passwordDefault is "reprap"

Common issues:

  • IP address changed - check Duet's current IP
  • Use http:// not https://
  • Password is reprap even without a login prompt

3. Network check

ping

If ping fails, fix the network issue first.

Run autodiscover

If not set up properly:

simplyprint-duet3d autodiscover

Reinstall

source <(curl -sSL https://raw.githubusercontent.com/simplyprint/integration-duet3d/main/install.sh)

Getting help

Gather this first

  • Output of journalctl -u simplyprint-duet3d.service
  • Duet firmware version

Support

Something unclear or missing in this guide? Let us know on Discord.