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

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

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 <duet-ip-address>

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

• GitHub: github.com/SimplyPrint/integration-duet3d
• SimplyPrint Discord: simplyprint.io/discord

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

Updated on: 09/01/2026