Connects to Duet 2 and Duet 3 boards running RepRapFirmware 3, standalone or with a single board computer running DuetWebServer. Status, temperatures, uploads, start, pause, resume, cancel and G-code lines.
For users
On the board
- Open Duet Web Control in a browser to confirm the board is on your network.
- In its G-code console, send
M552. The reply shows the IP address. The board's.localname works as well. - If you set a password with
M551, have it ready. Boards without one accept the default,reprap.
In SlicerX
- Add a printer and choose Duet. Duet boards are not found by scanning, so enter the address.
- Enter the password if you set one. SlicerX stores it in your keychain. The port is 80.
Network and firewall
TCP 80.
Common problems
| Message or symptom | Cause and fix |
|---|---|
| "rejected the credentials" | Wrong password (M551). |
| "rr_connect error 2" | The board has no free sessions. Close other Duet Web Control tabs and apps and try again. |
| "is unreachable" | Wrong address, network module off (M552 S1), or the board is off. |
| Start does nothing | The board is busy or in a halted state; check Duet Web Control. |
| No camera | Duet boards do not serve cameras through this connector. |
Untested on hardware
Checked against a simulator, not a board. First things to check: rr_connect on RepRapFirmware 3.4 and newer (session keys), the object model field names on your firmware, and that M32 and M0 behave as expected with your cancel.g.
For integrators
Plugin id duet. Capabilities: status, events, upload, start, pause, resume, cancel, G-code console. No camera, no filament slots.
Printer config: host, optional port (80), credentialRef for the password, pollMs.
Requests
GET /rr_connect?password=... on connect (err 0 ok, 1 wrong password, 2 no sessions). Per poll: GET /rr_model?flags=d99vn. Upload is POST /rr_upload?name=0:/gcodes/{name}. Commands go through GET /rr_gcode?gcode=...: M32 "0:/gcodes/name" starts, M25 pauses, M24 resumes, M0 cancels.
Mapping: processing, simulating and resuming map to printing, pausing and paused to paused, halted to error, off to offline, otherwise idle. RepRapFirmware has no finished state, so the event stream reports a job finished when progress was at least 98 percent before it went idle.
Events and rate
Polled every pollMs (default 1000). Each poll fetches the whole object model, which is a few kilobytes on a small machine and much more with many tools; raise pollMs on large machines. Sessions are not closed with rr_disconnect and expire on the board.
Testing
duet_contract in tests/drivers.rs. --auth sets the mock password mock-reprap.
Sources
RepRapFirmware HTTP requests: https://github.com/Duet3D/RepRapFirmware/wiki/HTTP-requests.