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Sprinter uploads then turns the extruder

Posted by roygpa

roygpa

Sprinter uploads then turns the extruder
December 10, 2011 04:19PM

Registered: 12 years ago
Posts: 108

When I make a change to sprinter, after the upload stage the extruder motor turns a revolution or two. Is there a way to shut that off? If the extruder is cool and a filament loaded it cannot turn... at least not very far.

Is there a way I can tell sprinter to move one of the axis motors back and forth to tell me that the new sketch was uploaded properly?

Or is this a malfunction?

Thanks in advance.

Roy

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RobertB

Re: Sprinter uploads then turns the extruder
December 11, 2011 11:25AM

Registered: 12 years ago
Posts: 12

Turn off the 12V supply while uploading? You can upload with just the 5V supplied by USB.

However, I don't get any motor rotation after uploading.

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jezmy

Re: Sprinter uploads then turns the extruder
February 03, 2012 03:26PM

Registered: 12 years ago
Posts: 9

I have the same issue with my Sanguinololu (Rev 1.2) - it's one of the things I seem to remember have been addressed in V1.3; there are ways to sort it (I think it involves replacing a couple of resistors on the board - but can't remember exactly where I saw that).
The easiest way is what RobertB says - just switch the 12V power off when uploading the firmware...