Filament monitoring while printing via USB

dc42

@timoschuett I can look at adding a S2 option to M591 which would be like S1 but enable the filament monitor even when not printing from SD card. You might find it too annoying to have the filament monitors active during startup, filament loading etc. so you may need to use S1 in your slicer start GCode and S0 in your slicer end GCode.

timoschuett

@dc42 That sounds very promising
If i understand correctly at this moment there is no point for me to manually enable this and a changes in the firmware need to be made from your site first?
Can you estimate without obligation how long this takes until its ready to use?

I think there shouldnt be any problems while filament loading and unloading etc. because (if i understand correctly) the filament monitoring is just checking printing moves (xy moves + extruding) and not move or extrude only commands.

oliof

@dc42 another option would be to implement Marlin's Host Action Commands as part of setting a Duet board to Marlin compatibility mode. Maybe that's more generally useful?

timoschuett

@oliof is this still needed if the host reads the outputs of the board?
The board just needs to output a certain message in the console and the host needs to react to this event as for example repetier-server can.

I would be totally happy with an S2 option for M591. This should resolve many problems.
If there is a quick and dirty workaround for this, please tell me

oliof

@timoschuett The host reading output from the board is exactly what happens with host action prompts, just in a documented, known, and supported way that is already done by other firmware. Hence I suggested using that instead of inventing another scheme which would require adoption by other systems.

benecito

Any update on when it will / might be available?

chrishamm

@benecito See https://github.com/Duet3D/RepRapFirmware/issues/862

jaysuk created this issue in Duet3D/RepRapFirmware

closed [FeatureRequest]: M591 filament monitoring option for USB control #862

benecito

@chrishamm @jay_s_uk thanks for the suggestion! Just wanted to try it out, but did not even get that far as it's status stays at "ok" even if there is no more filament in the sensor and the print is paused on a sd print.
Also is there a limitation not documented if the filament monitor is connected to a CAN board (duet 3 mini slave)
I get information back when sending M591 but no calibration values and the print does not pause. It works when it's connected to the mainboard.

jay_s_uk

@benecito the filament monitor has to be on the same board as the extruder driver.
there are some temporary limitations in place https://docs.duet3d.com/en/User_manual/RepRapFirmware/CAN_limitations

benecito

@jay_s_uk I know about those and the extruder driver was always on the same board as the filament monitor

jay_s_uk

@benecito looks like there are a few things that aren't reported in the OM for filament sensors, especially when over CAN-FD. https://github.com/Duet3D/RepRapFirmware/issues?q=is%3Aissue+is%3Aopen+filament

benecito

@jay_s_uk @chrishamm To be honest I don't care so much if it's reported in the OM or not. The proposed "workaround" at https://github.com/Duet3D/RepRapFirmware/issues/862 does not work if the status is always "ok". Rearranging the extruders and the filament monitors to the mainboard could be done, but is not the preferred option.

Is there another parameter than sensors.filamentMonitors[0].status that might help to achieve the idea of using deamon.g

jaysuk created this issue in Duet3D/RepRapFirmware

closed [FeatureRequest]: M591 filament monitoring option for USB control #862

jay_s_uk

@benecito no, thats the point of my response, sensors.filamentMonitors[0].status is from the object model...
there isn't another way to query something

benecito

@jay_s_uk all right - so the conclusion is, that we can't use any filament monitor as of now?

jay_s_uk

@benecito you can use them on the mainboard but it looks as though the reporting over CAN-FD needs work. but hopefully someone like @dc42 can chime in

benecito

@jay_s_uk But that's my point - even when connected to the mainboard sensors.filamentMonitors[0].status will stay at "ok" when I run out of filament

jay_s_uk

@benecito that may be a bug then. what firmware version are you running?

benecito

@jay_s_uk 3.5.0 beta 3

timoschuett

Hi, are there any updates on how to enable filament monitoring while printing via usb? Is there a new enable mode which needs to be used?
Thanks, Timo

jay_s_uk

@timoschuett you use S2 in M591 https://docs.duet3d.com/en/User_manual/Reference/Gcodes#m591-configure-filament-sensing
only supported in 3.5RC1 and newer