RE: [Gc-linux-devel] Building a SD card adapter

[Rob R. <ro...@re...>]

Hi Shaun,

I cannot see clearly which pin is which. Could you:
-put some text on the copper laywer with your layout program (if you
used one) so I can see clearly whether this is mirrored or not (PCB
layouts are always printed mirrored and then fabricated with the ink
laying on the copper so the real pcb gets unmirrored)
-indicate which is, according to your schematic/interpretation pin
1/2/11/12 on the GC side and pin 1 of the MMC/SD adaptor
-show the connections between the big square pads
-put a photo online so it becomes clear which way the SD is inserted.

Also you should make sure the contact is ok. I had to insert a 1mm
plastic strip under the pcb to get the correct height, just like the
plastic cover of a 'real' mem card does.

Regards, Rob

> -----Oorspronkelijk bericht-----
> Van: gc-...@li... 
> [mailto:gc-...@li...] Namens 
> Shaun Jackman
> Verzonden: Friday, April 08, 2005 5:52 PM
> Aan: gc-...@li...
> Onderwerp: Re: [Gc-linux-devel] Building a SD card adapter
> 
> 
> Hello Rob,
> 
> The SD card receptacle that I have is reversed from the one you used
> -- the SD card goes in upside down -- so I drew my own 
> circuit board [1]. I've built the board, but so far it 
> doesn't work. If you had a moment, would you mind looking at 
> my circuit? I'm almost positive there's nothing wrong with 
> it, but I'd appreciate another pair of eyes.
> 
> Thanks,
> Shaun
> 
> [1] http://www.sfu.ca/~sdj/tmp/gcsd.png
> 
> On Mar 22, 2005 3:37 PM, Rob Reilink <ro...@re...> wrote:
> > I've made my own pcb, layout at 
> > http://home.student.utwente.nl/r.reilink/files/gcnsd8.pdf
> > If you can find a friend who can make the pcb for you, that's fine, 
> > but I wouldn't recommend to get an entire pcb etching setup 
> just for 
> > this card. If you want to use your mem card, see if you can use a 
> > knife to get the soldermask off the pcb to get to the 
> copper trace and 
> > solder a
> > (thin) wire to it.
> > 
> > Another option which I used for testing: solder it to your cube.
> > 
> > Rob
> 
> 
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