write to ulticontroler's SD from inside cura

[iefbr14 0]

not sure it this is Cura related or firmware. it probably requires collaboration from both sides, but it would be soooo cool :

the hability to save the Gcode that cura just generated to the SD card that is inserted in the UltiController.

that would allow to have the advantages of printing from SD without the hassle of mounting and dismounting the card from UMO to computer and back.

it probably requires more work from the firmware side than from Cura's, as from cura's point of view, that's not different from direct printing, just need to provide a filename and that's it. just send Gcode through USB.

what do you think ? wouldn't this be usefull ?

 

[iefbr14 0]

or at least, allow the ulticontroller to expose the inserted SD as an USB storage device when connected to a computer. that would be enough

 

[Daid 306]

The USB connection is an USB-Serial connection. (Translation: SD as an USB storage device is impossible with the current hardware setup)

While there is actually code in place to send the GCode trough the USB-Serial to the SD card, this takes almost as much time as actually printing the file. So the added value is not that high.

 

[iefbr14 0]

mmm.. even at a rather modest baudrate (115200), that's a bit more than 14Kb/sec.

That would mean more than 3 minutes to transfer the Robot sliced at 0.1 (=~2.5Mb)

really long indeed, though not nearly as long as printing it, but i get your point.

 

[anon4321 16]

I think the baud rte is 250000

 

[erri 2]

You could try this custom firmware: https://github.com/ErwinRieger/Ultimaker2Marlin-USBPrint. With it you can store or print your Cura generated UltiGCode through USB on your UM2.

But note: there is no cura integration (yet ;-)), you have to use a commandline utility to download/print your gcode: https://github.com/ErwinRieger/Ultimaker2Marlin-USBPrint/wiki/UltiPrint.py-Utility.

 

[korneel 176]

so Daid;

if this is impossible, why can Octoprint read and write to the SD over USB?

 

[gpb01 23]

if this is impossible, why can Octoprint read and write to the SD over USB?

 

Yes, this is true, but is also true that the speed is limited to 250 Kbps ... which is 25 Kbytes/sec ... if you have a big print ... good luck :grin:

Guglielmo

 

[anon4321 16]

so Daid;

if this is impossible, why can Octoprint read and write to the SD over USB?

 

I didn't see Daid say it was impossible. Just slow. You can do it straight from Cura if you know the right gcode.