Topics created by peirof

@breed that wouldn't address any of the other concerns. That said, in a way the 2stepper expansion board for the Duet 3 mini is something along those lines; and since it's an open source design anyone could go and make an adapter board that slots in there. If there's a market for it, it'll prove the claim this is a big advantage (-:

@peirof said in Duet 3 mini warning for temperature?:

I thought that Duet 3 mini, did not need a fan on the drivers... is there any way to know the temperature of the drivers? It sounds to me like I've read that the Duet 3 mini couldn't.

With 1600mA current on 3 drivers, you definitely need to cool the Duet 3 Mini using a fan. We don't recommend stick-on heatsinks, instead we suggest using a fan to blow air along the drivers on both sides of the board.

If the drivers overheat another 30C beyond the point of the warning then according to Trinamic they shut down automatically.

@dc42 wow.... on this occasion, it would have been of great help... that "short to ground" track has made me suspect the wiring, as it seems that it was....

@phaedrux think I have find... Not duet related... Thx

@peirof

And just to be sure it works correctly remember that you need to set the Z=0 Datum using a single G30 command with the Z probe at the center of the bed:

before creating the height map before loading the height map

Frederick

@phaedrux

I find the mistake.... At the end of config.g, there was another M92 Exx...

Thx

@fcwilt If I haven't made a mistake, the same ones that were connected when there were two cables... well, I don't know... the fact is that now it works like before...

@peirof it’s often used when using absolute extrusion, to reset the extruder position, because the number can get so large the the extruder loses accuracy. It is recommended to use relative extrusion with RRF, so the extruder accuracy is the same all through the print.

Ian

..........and given that infill is usually at 45 degrees (or some other angle) to X and Y, there is only one situation where a single axis motor would be employed at any given time, and that would be a hollow cube with the sides orientated at 45 degrees to X and Y

@peirof It's not very difficult to test on whatever slicer you favour.

On my PrusaSlicer the answer to case B is 11 layers, 1.98 high. It even shows you that in the user interface (no need to read gcode):
eb76d7d1-fc0a-4221-818e-d4c9e0d577ad-image.png
Reading through the gcode, this is the last Z change (note that the gode has zero-based counting, so layer 10 is the 11th layer):

... G1 X-49.24 Y-49.159 E.02829 ;LAYER_CHANGE ;Z:1.98 ;HEIGHT:0.18 ; layer change to layer 10 = 1.98mm ;;; G1 Z1.98 F10800 G10 ; retract G1 X-49.383 Y-50.135 G1 X49.383 Y-50.135 ...

Case C is 9 layers, 2.07 high:
0df89e8f-6c8a-4711-8adc-ff02914c5e75-image.png
and

... G1 X-49.254 Y-49.194 E.03431 ;LAYER_CHANGE ;Z:2.07 ;HEIGHT:0.23 ; layer change to layer 8 = 2.07mm ;;; G1 Z2.07 F10800 G10 ; retract G1 X-49.399 Y-50.151 G1 X49.399 Y-50.151 ...

@mikeabuilder said in Relation between extruder speed and moving speed:

I hope that page is making it through the documentation migration.

It's planned! Just needs to be migrated, updated, new images, etc. Just got a couple of other guides to do first.

Ian

@dc42 thx...

@peirof The 4 pin Fan ports also support 2 wire Fans.( see [https://docs.duet3d.com/Duet3D_hardware/Duet_3_family/Duet_3_Mini_5+_Hardware_Overview]
the cooling pads of the driver are on the backside of the PCB..so best would be if the cooling air comes from the side.
In my Voron i used this solution:

M950 F5 C"out5" Q100 ; Creates Case Fan 1 M106 P5 T40 L0.4 X0.4 H3 ; Case Fan 1 Settings (Turns on at 40°C tool temp) at low speed M950 F6 C"out6" Q100 ; Creates Case Fan 2 M106 P6 T40 L0.4 X0.4 H3 ; Case Fan 2 Settings (Turns on at 40°C tool temp) at low speed and hooked them up to the MCU Temp M308 S3 A"MCU" Y"mcu-temp"

Others connected the fans to the hotend tempsensor...so if you start to print it starts to cool the board

@phaedrux @droftarts yes, I'm part of their beta team. I can forward any suggestions to improve the configurations.

@peirof it's difficult to recommendation settings without having a resistance vs temperature table for that thermistor.

If it's for a bed heater then you can use R100000 B3950 C0 and get reasonable temperature accuracy up to at least 100C.

If it's for a hot end heater then you really need to do better. Preferably, get a resistance-temperature table for that thermistor from the supplier of the thermistor.

I have find the root of the problem...

It was not a mistake in the configuration of thermistor.... It was simpler.... From what it seems, when mounting the thermistor in the heatblock the screw that held it in position, pressed the cable, affected the readings.... When I adjusted it, outside the Heatblock it gave some temperature values and when it was in the heatblock, it gave others

@phaedrux said in Weird error message when calibrating nozzle heater....:

M303 T0 S240

I have tried that gcode (M303 T0 S240), and the same error. But the Hotend fan does not turn... I thought that the fan was not working... but on the Status page, I made it turn manually... I am going to check if I have the temperature sensor configured correctly, maybe it's reading another temperature than the real one...

@peirof if you send G91 to put the axes in relative mode then you can use G1 H2 moves to test individual motors even on a delta.

@peirof said in Some dudes about BlTouch use...:

will remain outside the limits of the bed. What would happen?

It will skip and points it cannot safely reach.

@peirof it’s the point the bed pivots around, so point B.

Ian