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Author Topic: PCB resetting in mid print  (Read 5787 times)
Bogdan Kecman
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« on: November 12, 2009, 11:51:38 AM »

Weird problem since yesterday ... in mid print (usually between 5th and 10th layer) the pcb restart ?!?! 50% restarts lead to "home page" other 50% send PCB to boot loader screen ?!

Nothing new in the room, nothing new on the table, electricity seems to be ok, ... changed 3 different firmware's and decided it has nothing to do with firmware ..

Anyone with Ideas? back emf? loose cable (I tried to shake all cables, connectors .. nothing happened) ?
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Forrest Higgs
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« Reply #1 on: November 12, 2009, 02:35:24 PM »

Funny you should mention it.  I paused my printer because I had to leave the lab for a few hours.  When I got back the thing had reset to the start screen.  It was annoying, to say the least because I was 75% through a three hour print.  Sad
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Bogdan Kecman
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« Reply #2 on: November 12, 2009, 03:00:52 PM »

the issue I have is that it reset in the middle of the print, the head just stops, the heater go off the screen go blank, then show the logo's and then display the main screen (or in other case go blank and then display usb bootloader screen) ?!!?

never happened before and now it is happening every time I try to print .. changed the SD card, reformated both of them, so that shouldn't be the reason ... checked underside and upside of the PCB for potential "dust" that might cause a short, rechecked all wires .. no difference .. after 5 or 6 layers, it just reboots Sad
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unfold
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« Reply #3 on: November 12, 2009, 03:18:47 PM »

I had this too two weeks ago, we discussed it here Bogdan: http://www.bitsfrombytes.com/fora/user/index.php?topic=304.msg1985#msg1985.
Every long print failed somewhere with the same symptoms although also at higher layers. Most often the board resets to main screen, sometimes a seek error (then it went blobbing ones). Nothing changed in my setup, I haven't printed much since then, so can't say if it is still happening. ¿Qué pasa?

Five of 7 lost prints in one day: http://gallery.me.com/unfold/100047/Error/web.jpg?ver=12568388440001
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« Reply #4 on: November 13, 2009, 05:17:43 PM »

Any updates on this Bogdan? Just curious  Smiley
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Bogdan Kecman
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« Reply #5 on: November 13, 2009, 05:22:50 PM »

disassembled the PCB .. cleaned with soft brush (both sides), reassembled it and now it is printing the first print after that ... the "critical" point is passed, I'd say I have 3-4 layers till finish ...

donno what to think ... maybe something got inside and was short circuiting something ... maybe it was the gremlins ... donno ... appears to be working now ... what I can say is that it is not a firmware issue as I tried 4 different firmware versions and all did the same thing .. so it's something else .. anyhow, hopefully, I can continue with my PP prints ...

while typing this, the "first" print finished .. and it is all ok .. so .. hopefully, next one will be ok too so the problem is fixed by some cleaning ...
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Bogdan Kecman
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« Reply #6 on: November 13, 2009, 06:22:54 PM »

celebrating too soon Sad ... the second test failed the same way Sad ... giving up for now ... will give it few days before I touch it again
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Forrest Higgs
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« Reply #7 on: November 13, 2009, 08:59:25 PM »

Weird!  Sad
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Bogdan Kecman
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« Reply #8 on: November 14, 2009, 12:58:42 AM »

it is frustrating as hell .. but .. what can I do ... I'm not that patient so trying more things ... now I replaced the psu (attached my lab 15A 12V PSU instead of the small 5A one) and restarted the print ... let's check that out ... maybe is simple as changing the psu
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« Reply #9 on: November 14, 2009, 11:28:08 AM »

I'm also totally stuck Bogdan, looks like a problem with our boards (see PM). I tried reformatting the SD card and did three 20x20x20 mm cubes today and two failed. The first went OK, second quit at the raft and third at 22 layers. I have no idea whats going on and I find it very bizar that we have this almost simultaneously without updating anything software wise. Bad karma, solar flares, autumn leaves? What did the PSU change do?
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Forrest Higgs
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« Reply #10 on: November 14, 2009, 12:16:33 PM »

Is your printer on an UPS unit?
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« Reply #11 on: November 14, 2009, 01:42:51 PM »

Whats that? Backup power? No, pretty stable grid here.
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Dave White
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« Reply #12 on: November 14, 2009, 02:06:23 PM »

Only guessing here but for 2 of you to have the same/similar problems develop over the last few days... there must be a common cause.
Rapman = same
Firmware = same
SD Card = same or reformatted
working environment = same

so.... Software?Huh? have you both updated skeinforge recently?
is this only happening to newly created g-code files?
does a file you created a couple of weeks ago print?
does the standard minimug g-code file work? (downloaded from BfB not one you created)

Have you checked through the g-code... is anything different to what you would normally expect?

Dave
« Last Edit: November 14, 2009, 02:08:24 PM by Dave White » Logged

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Bogdan Kecman
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« Reply #13 on: November 14, 2009, 02:34:57 PM »

It's not skeinforge, I tried the files I used month ago .. same problem ...

anyhow, mine PSU was on the UPS ...

I changed the PSU (using big lab PSU I use for my electronic work, 12V stable with big 2200uF capacitor on the exit, 15+ amps ) and it seems to be working file ?! ... I managed to print 2 objects fully ... so - it might be the PSU... but I couldn't say I have any conclusive data until I print for a few more days.
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« Reply #14 on: November 14, 2009, 02:36:42 PM »

Only guessing here but for 2 of you to have the same/similar problems develop over the last few days... there must be a common cause.

Hi Dave, thanks for drilling down some options! It baffles me to, you would suspect a software upgrade to be the reason but things just don't point into that direction.
Quote

Rapman = same

Yes we have the same machine from the same batch afaik

Quote

Firmware = same

Yes BUT Bogdan tried uploading all previous versions of the firmware and the problem persisted. Rules out Firmware

Quote
SD Card = same or reformatted

I tried all my cards, and reformatted in Windows the one that I have used since the beginning. No change in symptoms, rules out SD cards

Quote
working environment = same

Belgium, Serbia... Yes same Wink No seriously. I did not change my environment, its in my office ±20 degrees. First I thought that it was from a electrical extension cord switch that was a bit broken. But the RM is on a different outlet and I did a stress test flicking the switch repeatedly while printing and also plugging and unplugging other appliances. Nothing happened, kept printing.

Quote
so.... Software?Huh? have you both updated skeinforge recently?

No, I don't update anymore unless I have a serious issue with the current version. I can digg up the version tomorrow but I doubt Skeinforge being the problem but will double check
Quote

is this only happening to newly created g-code files?

does a file you created a couple of weeks ago print?
does the standard minimug g-code file work? (downloaded from BfB not one you created)

New files, old files, happens to all of them. And I must say that at the moment I cant print anymore at all because of this and it feels like the error pops up quicker and quicker. A small print might work in a few tries but anything longer then 15-20 min. will likely fail somewhere. I will double check with the BfB files and some of my first gcode files.

Quote
Have you checked through the g-code... is anything different to what you would normally expect?

Dave

Havent checked yet, the stops happen at random points in the file and both in new and old files. So pretty unlikely that it is in the Gcode.
So all together is seams unlikely that the reason is software. I can imagine something with the environment although that sounds far fetched but as far fetched as a simultaneous malfunctioning of our same gen. boards. There is the case of Apples first gen. Airport express base stations that were likely to fail after 12-13 months.
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