1 Topic by joshhunsaker (edited by joshhunsaker 2013-09-30 17:49:48)

  • joshhunsaker
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Topic: Prints keep erroring out

I can't seem to get a full (decent-sized) print accomplished.  Almost every single time the print will fail and the unit will disconnect from the host computer due to error.  I am using an extremely well shielded high-quality usb cable with dual rf chokes and the cord is not being run near a lot of other power cables, etc.  I have a fan on the electronics and the room is always very cool when prints are being done.  I've updated the thread count in slic3r to 8.  I have noticed the x-axis motor gets really hot so I may put a heatsink and fan on it...  could the x-axis motor heat be the main culprit??  I have my filament spool on a lazy susan so there is no significant resistance to extrusion and I've re-greased all rods with white lithium grease so I know for sure I don't have any more slippage problems.

I'm using a Solidoodle 3rd gen with unmodified electronics on Windows 8 with Repetier v0.82b.

2 Reply by ronsii

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Re: Prints keep erroring out

Since you are using win 8 make sure that ALL power saving is OFF otherwise win8 will attempt to turn the USB port off among other things.

3 Reply by joshhunsaker

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Re: Prints keep erroring out

Ok, good advice.  I'm going to try that and my friend mentioned it's likely the baud rate is set too high and to try 78600 (I have a print running right now @ 256000 or else I would switch it but luckily it appears to be faring okay).  I'll report back when I know more about if this will work.

The specific type of error I keep getting (and it also often tends to freeze the machine for just a moment creating these ugly little globule blobs in the print) is "checksum mismatch".

4 Reply by joshhunsaker

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Re: Prints keep erroring out

I've disabled any USB power saving modes and lowered the baud rate.  Still getting the exact same problem.  In fact the entire printer now stopped working completely after printing like half a thumbscrew and now gives me the following message:

"Serial com error:System.IO.Ports.SerialErrorReceivedEventArgs"

I've tried resetting the sanguinololu board, restarting the computing, turning the printer off/on.  Nothing works.  I'm going to have to see about removing and reinstalling the software I guess.

5 Reply by ronsii

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Re: Prints keep erroring out

The sanguoinlolo board only works at 250000 baud, the newer SD printrboard works at any baud rate however.

6 Reply by rjp350z

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Re: Prints keep erroring out

Do you have the latest .net framework installed?  I've seen this in other apps that were working on older .net

Also, what is your "RESET ON CONNECT" set to in the printer settings - Default I think is supposed to be DTR Low>high>low

7 Reply by rjp350z

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Re: Prints keep erroring out

+1 ronsii...  Spoke too soon...

Similar issue was resolved here by changing Baud rate to 250000

http://www.soliforum.com/topic/3576/ser … r-problem/

8 Reply by joshhunsaker

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Re: Prints keep erroring out

So yeah, I had no idea but it turned out to be the baud rate absolutely needed to be at 250000 exactly.  Interesting.  That has totally solved the problem here! smile  No more errors.  Thanks guys.