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Baan BaaT
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Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 11:34pm 28 Jun 2011

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G'day All,
I've got my Maximite up and running and all seems well until I try to save. I get the message "Error accessing the SD card". I have checked the format using a laptop FAT32, I have checked soldering etc. Any suggestions!

Thanks in advance.
Tim.

BobDevries

Senior Member

Joined: 08/06/2011
Location: Australia
Posts: 266

Posted: 12:09am 29 Jun 2011

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Are you getting this error on boot-up, or just when you try to save a file?
Have you checked the write protect switch?

Regards,

Bob Devries
Dalby, QLD, Australia

Baan BaaT
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Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 12:18am 29 Jun 2011

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Bob,
I get the error when I try to save a file. All seems OK on boot-up. I have checked the write protect switch.

Tim.

elproducts

Senior Member

Joined: 19/06/2011
Location: United States
Posts: 282

Posted: 12:18am 29 Jun 2011

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I'm seeing the same thing on my board with a SanDisk SDHC 4GB card. Write protect is in the unlock position.
I can read and write to it on my PC.

www.elproducts.com

Baan BaaT
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Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 12:23am 29 Jun 2011

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I don't know if this is coincidental but I am also using a 4GB SanDisk card

Tim.

BobDevries

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Joined: 08/06/2011
Location: Australia
Posts: 266

Posted: 12:30am 29 Jun 2011

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It would seem that all SDHC cards are not created equal.

For interest sake, how are the mis-behaving ones formatted?

I have a Verbatim 4GB card formatted FAT32, which works fine. It seems a little slower to access than the Verbatim 2GB SD card I also have.

Regards,

Bob Devries
Dalby, QLD, Australia

Baan BaaT
Newbie

Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 12:35am 29 Jun 2011

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I was thinking along the same lines Bob. I might try another card that I have at home and see if I get a different result .... but that wont be until later tonight.

Tim.

donmck

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Joined: 09/06/2011
Location: Australia
Posts: 1313

Posted: 02:37am 29 Jun 2011

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Sorry, just posted this to the wrong thread. :-(

There is a list of compatible Cards at:

http://www.themaximitecomputer.com/maximite-control/

And I am updating this list when I get new information, so please let me know if you have a different experience to the ones that are listed.

Cheers Don...Edited by donmck 2011-06-30

https://www.dontronics.com

donmck

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Joined: 09/06/2011
Location: Australia
Posts: 1313

Posted: 02:47am 29 Jun 2011

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If you are powering it from USB, try the DC input plug with a 6 to 13VDC plug pack instead.

See if that does anything different.

Cheers Don...

https://www.dontronics.com

Baan BaaT
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Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 02:59am 29 Jun 2011

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Thanks for your thoughts Don but I am presently powering the maximite via external DC.

donmck

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Joined: 09/06/2011
Location: Australia
Posts: 1313

Posted: 03:04am 29 Jun 2011

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Baan BaaT said Thanks for your thoughts Don but I am presently powering the maximite via external DC.

OK, don't do the age poll at:
http://www.themaximitecomputer.com/maximite-age-demographics -poll/

It may raise our average

Cheers Don...

https://www.dontronics.com

BobDevries

Senior Member

Joined: 08/06/2011
Location: Australia
Posts: 266

Posted: 03:07am 29 Jun 2011

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hmm,
this may seem an obvious question, but I'll ask it anyhow....

Can you read files from the SD card? Do you get an error if you use the FILES command?

Regards,

Bob Devries
Dalby, QLD, Australia

donmck

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Joined: 09/06/2011
Location: Australia
Posts: 1313

Posted: 03:12am 29 Jun 2011

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Here is an old friend of mine, and he has uSD cards on some of his products.

http://4d.websitetoolbox.com/post?id=5149940

might be some tips there to help.

Cheers Don...

https://www.dontronics.com

Baan BaaT
Newbie

Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 03:14am 29 Jun 2011

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Bob,

Thanks for asking that one because I haven't tried to read the card as there were no files to read. I'll try that one but it will have to wait because the LCD monitor I have been using has become a bit contankerous and now says "cannot display this video mode" even though It was working nicely previously. Arghhhh! I have a CRT monitor at another location that I will try later today.

Don, I did the age poll a few days ago .... I'm one of the 1972 PMG intake.

Tim.

donmck

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Joined: 09/06/2011
Location: Australia
Posts: 1313

Posted: 03:20am 29 Jun 2011

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Baan BaaT said Bob,

Thanks for asking that one because I haven't tried to read the card as there were no files to read. I'll try that one but it will have to wait because the LCD monitor I have been using has become a bit contankerous and now says "cannot display this video mode" even though It was working nicely previously. Arghhhh! I have a CRT monitor at another location that I will try later today.

Don, I did the age poll a few days ago .... I'm one of the 1972 PMG intake.

Tim.

Thanks Tim. I saw your profile before I said that. :-)

And have a look at:
http://www.themaximitecomputer.com/maximite-control/

You may need an extra 22uf capacitor on the 3.3V rail.
Detailed at:
http://www.themaximitecomputer.com/maximite-sm1-prototypes/

for our MM-SM1 version, but the same may apply to your circuit.

Cheers Don...

https://www.dontronics.com

BobDevries

Senior Member

Joined: 08/06/2011
Location: Australia
Posts: 266

Posted: 03:23am 29 Jun 2011

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what a coincidence....

I, too was part of the PMG 1972 intake for Apprentice Telecom Tradesman at the PMG training school Chermside, Brisbane.

Regards,

Bob Devries
Dalby, QLD, Australia

donmck

Guru

Joined: 09/06/2011
Location: Australia
Posts: 1313

Posted: 03:26am 29 Jun 2011

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Blue Orange Green Brown Slate.

Secret men's stuff.

School of 59.

Cheers Don...Edited by donmck 2011-06-30

https://www.dontronics.com

Baan BaaT
Newbie

Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 04:22am 29 Jun 2011

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Thanks for everyone's thoughts, I have sorted out the monitor problems ...... it seems the Dell monitor doesn't like working with Jumper 2 "select composite" inserted.

I tried the Files command and got the same response 'Error accessing the SD card'

Bob, my intake was at Berry St North Sydney.

Tim.

Baan BaaT
Newbie

Joined: 08/06/2011
Location: Australia
Posts: 10

Posted: 08:39am 29 Jun 2011

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Success!
I arrived home and located a 128M sanDisk card ex digital camera and I can save files to it.

So what can I conclude? Maximite is OK and will write to SD cards.
Wont write to 4GB SanDisk in my case and one other case mentioned in this thread.
Maybe Don can add the 4GB SanDisk to his list of 'No-goers'

donmck

Guru

Joined: 09/06/2011
Location: Australia
Posts: 1313

Posted: 08:48am 29 Jun 2011

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Added:

http://www.themaximitecomputer.com/maximite-control/

Cheers Don...

https://www.dontronics.com

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