@jay_s_uk You did a great job identifying the right place to customize the software (at least for me, it would have been a lot of work).
Anyways, considering that in this case I would need to host the whole programming environment for this minor change, which would not be persistent at the next release, I decided to rather try to create a macro and use the BtnCmd plugin to make it available in DWC.
Thanks for your help.
I know the M221 command, which allows me to multiply the current extrusion rate defined in the slicer by a factor to increase or decrease it.
But how to I set the extrusion rate directly? I mean how to set it so that 100% would mean all e-steps per rotation (200 for example or as calibrated). I would then rather redefine the extrusion rate replacing (not correcting) what is set in the slicer, for the current gcode session.
Sorry if this is a stupid question, I did not find the answer looking at the RRF gcode dictionary.
@DIY-O-Sphere OK, I knew I would make a fool of myself with this question, now I feel a bit embarrassed but well informed. Thanks!
If the printer is in the process of shutting down via "M81 S1", or perhaps due to a set dwell time, how do I cancel that? How do I stop the waiting without proceeding with what would have happened if the time had passed as originally designated?
I cannot find the command in the documentation because I am missing the right keywords when searching.
@dc42 said in Bed heater fuse always blowing:
Have you measured the resistance of the bed heater?
I should have begun with that question.
I measured 1.6 Ohm. Which brings us to 15 A. Nice, no? At times it takes weeks to blow, at times the second day. Chinese fuses are more tolerant 
I replaced the fuse with a 20A one and will keep an eye on that. I re-tightened the bed heater terminals to avoid additional heat there (I once already had an issue with bad loose contacts).
@dc42 Thanks!
I never thought it would be possible to use an external switch because I was asuming that the current is somehow regulated (not just on/off).
What I already tried was to glue an aluminum heat dissipator on the fuse, but surprisingly, it blows even earlier then.
I will go for the mosfet switch but that is an effort.
The 15A fuse for the bed heater in my Duet2 WiFi gets blown aprox. every week, or perhaps every dozen of times used. This always happens when starting to heat the bed (at aprox. 40 deg.C).
I have read that this is because the circuit is dimensioned up to 18A, but since there are no such fuses (at least I can't find one with the proper size), I have to use 15A, which is too small.
Is there a trick to limit the current used to heat the bed? Doing the heating slower for example? How would I do that?
Thanks in advance.
@infiniteloop I have changed my start code as you proposed, next time I will see what happens.
Although I don't feel completely confident, since the documentation states for M400:
"release all axes and extruders owned by the current motion system except for axes/extruders needed by the current tool"
and I don't know the exact meaning/repercutions of that release action. Steppers should stay available for printing!
I have put this on my start code for the slicer:
M300 S1024 P150 ; beep at 1 kHz for 150 ms
and according to the documentaion:
"Play beep sound, use to notify events like the end of printing. If an LCD device is attached to RepRapFirmware, a sound is played via the add-on touch screen control panel. Else the web interface will play a beep sound."
So I would expect the PanelDue to play that sound, but I cannot hear anything.
What am I doing wrong?
(using Duet2 WiFi and PanelDue 5" with current software).
@chrishamm
I tried out the simulation in the DWC.
Actually, the simulation calculates more than just the total print time, since it shows duration for each layer grafically.
Is there a way to get that data as numerical values in a text file? Perhaps with a different granularity?