Status

Supported features:

• Printer registration

• Printer status update

• Webcam snapshots and MJPEG livestreaming via the simplyprint-ws-client camera pool

• GCode receiving

• File downloading

• Printer control (start, pause, resume, cancel)

• Self upgrading via G-Code M997

• Device health update

• Bed leveling

• Filament sensor

• Duet auto discovery with tracking based on BoardID

• Leave a cookie on the printer to identify the printer in the future (0:/sys/simplyprint-connector.json)

• Grab the webcam URL from DWC settings file from the printer

• Webcam URL can be a snapshot endpoint or MJPEG stream

Missing features:

• PSU Control

• GCode Macros / Scripts [not yet implemented by SimplyPrint.io for Duet]

• GCode terminal [not yet implemented by SimplyPrint.io for Duet]

• Receive messages from Printer in SimplyPrint.io [not yet implemented by SimplyPrint.io for Duet]

Installation

Open an SSH session to your SimplyPrint-connected device, such as a Raspberry Pi 4B.

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

Content of DuetConnector.json

The default password for the Duet is reprap, even if the web interface does not require a login.

[
    {
        "id": null,
        "token": null,
        "name": null,
        "in_setup": true,
        "short_id": null,
        "public_ip": null,
        "unique_id": "...",
        "duet_uri": "http://192.168.1.0",
        "duet_password": "reprap",
        "duet_unique_id": "YOUR_DUET_BOARD_ID",
        "duet_name": "YOUR_DUET_NAME",
        "webcam_uri": "http://URI_OF_WEBCAM_SNAPSHOT_ENDPOINT/webcam",
        "duet_om_include": null,
        "duet_om_exclude": null,
        "duet_om_frequent": null,
        "duet_poll_interval": null
    }
]

Object model polling options (all optional, null selects the built-in defaults):

• duet_om_include: list of object model paths (e.g. "heat", "move.compensation") the connector is allowed to fetch. Anything outside these subtrees is never requested from the printer, which keeps M409 / rr_model traffic (and the DCS<->Duet SPI link in SBC mode) small. Use ["*"] to disable filtering and fetch the full object model. The paths seqs and state.status are always fetched on top of a custom list.

• duet_om_exclude: list of paths that are never fetched, wins over duet_om_include.

• duet_om_frequent: subtrees polled with the M409 “frequently” flag on every tick (default: heat, job, sensors.filamentMonitors, state). Only paths allowed by the include/exclude filter are polled.

• duet_poll_interval: seconds between polls (default 1.0, minimum 0.1). Raise this to further reduce load on the printer.

Usage of Meltingplot Duet SimplyPrint Connector

• Create a configuration with simplyprint-duet3d autodiscover

• Optional Edit the configuration file ~/.config/SimplyPrint/DuetConnector.json

• Start the duet simplyprint connector with simplyprint-duet3d start or systemctl start simplyprint-duet3d.service

• Add the printer via the SimplyPrint.io web interface.