Hi Illuminarti,
I would like to know how I can "downdate" to coin a word - to an earlier version of the firmware.
My machines awre now running with the firmware version that comes with CURA 13.03. I really like the progress as far as the display on the Ulticontroller is concerned- all of a sudden there are long file names, and more info on the display. But when I updated the machine I asked myself "what if for some reason the new firmware won't work?" I suddenly realized that I did not know the way back....Sometimes there might be bugs in newer versions of a firmware, and I am not well versed in the handling of the Arduino. I'm basically an artist who always had bad grades in math....
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illuminarti 18
That's really weird, variador. And pretty frustrating sounding. But the differences between the recent versions of the firmware shipped with Cura are not that great, and I'd be very surprised if they changed anything significantly about your printer. I suppose its possible that there might be a slightly different default setting in an earlier version of the firmware, and that is showing up some mechanical issue with the printer, but in general not a lot has changed recently.
I think it's also unlikely that firmware 'corruption' in and of itself would cause the printer to print out of alignment on the second layer... so far as the firmware is concerned, even the concept of layers is a bit meaningless - it just deals with individual axis movements, one set at a time. If any of them work (e.g., to print the first layer) then there's no particular reason that they all won't work, so far as the firmware is concerned.
If I had to guess, I'd say that you possibly experienced some skipped steps during a 'fast travel move' as the printer was moving into position to start the second layer. You might want to check your speed and acceleration settings, and perhaps lower the travel move speed a bit. It might be that the earlier firmware had lower maximum speeds compiled in, and that might have slowed the troublesome moves to the point that they were no longer causing problems.
I've never had problems uploading firmware to the printer, and I do it a lot. And I'm not aware of any reason why you shouldn't be able to move back and forth between versions at will. There's nothing that ties together Cura and particular firmware versions - Cura creates standard gcode, and the firmware understands it. Pretty much any version of Cura should talk to any version of the firmware.
It sounds more like some sort of USB issue - which could be on the printer end, but equally could be on the computer side, or perhaps the cable. I'd be inclined to try different ports and cable just to try and narrow that down. And I'd also be sure to power cycle the printer when switching between client programs, just to be sure that you're starting from a known-good state.
It's an odd problem, and it shouldn't be that hard to upload firmware and connect. Let us know if you're able to narrow down the problem any.
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