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Michael Zucchi

 B.E. (Comp. Sys. Eng.)

  also known as zed
  & handle of notzed

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Monday, 21 December 2009, 11:58

The Puppy Breathes Again

I was talking about ARM stuff on an IRC channel and got interested in playing with my BeagleBoard(s) again. I remembered there was a hardware issue that caused the UHCI port to fail pretty regularly and looked up to see if the designers had found a fix.Fortunately they had.

Subject: [beagleboard] Re: USB EHCI problems
From: Gerald Coley (ger...@beagleboard.org)
Date: Nov 9, 2009 5:57:18 am
List: com.googlegroups.beagleboard

This issue is due to be fixed with on REV C4. It is not clear that it can be fixed on all Rev C3 boards. You are free to try an RMA, but their is no guaranty that it can be fixed. What will be done there is the soldering of the 20uf CAP across C97 and then they will run the board for a couple of days to see how well it works.

Gerald

So, at 3am on a Saturday morning I went looking for parts. I was feeling a bit apprehensive about soldering on such a tiny part, but I didn't really feel like sending it in either. I found a 22uF electrolytic cap on an old motherboard on which all the green caps blew which fit the bill and fit the tiny spot on the board. I worked out which pin was connected to the ground rail and gave it a shot.

So after that I had to re-setup a booting image - previous ones had been wiped to use my digital camera, and a HDD was wiped to transfer tv shows. Setting it up is a bit messy but didn't take too long. Once I got it setup I had it playing video and internet radio and left it running overnight (well over-day, it was about 6am by now).

And it's been up since.

Nice one - before I was lucky to get an hour, and copying some video files across the network would've almost certainly killed it. Well thanks to the BeagleBoard guys for finding a fix. After reading about the technical specs of the OMAP chip I'm almost surprised the thing works, electronics is such a fiddly thing, compared to software where at least 0 always means 0 and 1 always means 1.

Now, to find something to do with it ...

Tagged beagle.
It beat me, another year on, and what happens next? | Too many late nights, Dragon Age
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