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Forum Index : Microcontroller and PC projects : Dontronics Maximite SM1

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dougp
Newbie

Joined: 29/11/2011
Location: Australia
Posts: 3

Posted: 10:43pm 29 Nov 2011

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Hi, Ordered and received the Maximite SM1 from Dontronics. Loaded in 2.7B firmware OK. All works fine except no SD card access. When trying to save to or read files I get an error message "SD Card not Accessible". There is no activity on the indicator D5. I can save and read files from drive A OK. There appears to be dodgy soldering on the SD card socket. As it was purchased as a fully configured, operational board I attempted to order a warranty replacement from Dontronics but got sent to this forum :-( Any suggestions other than physically taking a soldering iron to the SD socket (which would invalidate any warranty claim) would be appreciated. Thanks, Doug.

elchucko

Regular Member

Joined: 09/11/2011
Location: United States
Posts: 86

Posted: 11:04pm 29 Nov 2011

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Your post indicates you loaded 2.7B after you received the card? If so, did it work before you loaded 2.7B? Try loading an earlier version of firmware.

dougp
Newbie

Joined: 29/11/2011
Location: Australia
Posts: 3

Posted: 11:15pm 29 Nov 2011

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Thanks elchucko, the board came with 2.6 loaded. Same problem as now - no SD card access, no D5 indicator. I have also tried several different SD cards with no success.
Cheers, Doug.

elchucko

Regular Member

Joined: 09/11/2011
Location: United States
Posts: 86

Posted: 11:54pm 29 Nov 2011

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Try loading 2.7 A . Try a different SD card.

Talbit
Senior Member

Joined: 07/06/2011
Location: Australia
Posts: 210

Posted: 12:43am 30 Nov 2011

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Sounds like a crook solder joint to me. How good are your eyes?
I just purchased a 10X stick-in-your-eye, magnifier.
Talbit

Talbit

dougp
Newbie

Joined: 29/11/2011
Location: Australia
Posts: 3

Posted: 12:54am 30 Nov 2011

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Thanks guys, checked voltages - 3.3 measures 3.29V on both USB and 9V plugpack, 5V measures 4.7V on USB and 5.05V on 9V plugpack. To my great disgust/delight, it now works on both USB and plugpack for no logical reason that I can think of other than a suspect solder joint somewhere. I had tested both sources previously. The SD access light now comes on as expected and I can save and read 2GB SANDISK, 32MB Panasonic OK. Didn't like 8GB SANDISK or 32MB Multimedia Card - both gave a root directory error message.
Been doin' this stuff for nigh on 40 years and I hate it when this happens - can't see that I overlooked anything first time round. Thanks to all for your assistance,
Cheers, Doug.

elproducts

Senior Member

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

Posted: 01:08am 30 Nov 2011

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From what I've been told any SD card over 2GB will probably not be formatted in the proper FAT so it won't work on a Maximite.

Can't explain the rest of it.

www.elproducts.com

donmck

Guru

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

Posted: 01:11am 30 Nov 2011

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dougp said Hi, Ordered and received the Maximite SM1 from Dontronics. Loaded in 2.7B firmware OK. All works fine except no SD card access. When trying to save to or read files I get an error message "SD Card not Accessible". There is no activity on the indicator D5. I can save and read files from drive A OK. There appears to be dodgy soldering on the SD card socket. As it was purchased as a fully configured, operational board I attempted to order a warranty replacement from Dontronics but got sent to this forum :-( Any suggestions other than physically taking a soldering iron to the SD socket (which would invalidate any warranty claim) would be appreciated. Thanks, Doug.

What I said to Doug was:

Hi Doug, have you joined the user forum and asked there?
http://www.thebackshed.com/forum/forum_topics.asp?FID=16&PN= 1

have you read:
http://www.themaximitecomputer.com/maximite-control/
about compatible cards and other problems?

It appears Doug has it sorted now.

Cheers Don...

https://www.dontronics.com

RawMicro

Newbie

Joined: 29/10/2011
Location: United States
Posts: 4

Posted: 01:53am 30 Nov 2011

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I'm using a Verbatim 4GB card with my SM1. Works flawlessly with both 2.6 and 2.7B

- Rich

Fuel Efficient Cars HQ

Greg Fordyce
Senior Member

Joined: 16/09/2011
Location: United Kingdom
Posts: 153

Posted: 09:23am 30 Nov 2011

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dougp said All works fine except no SD card access. When trying to save to or read files I get an error message "SD Card not Accessible". ... Any suggestions other than physically taking a soldering iron to the SD socket (which would invalidate any warranty claim) would be appreciated. Thanks, Doug.

I had this problem and ran a soldering iron across the the sd card contacts which fixed it. I don't think you will have a warrantee problem if this doesn't work, check with Don.

donmck

Guru

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

Posted: 04:53pm 30 Nov 2011

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Greg Fordyce said

I had this problem and ran a soldering iron across the the sd card contacts which fixed it. I don't think you will have a warrantee problem if this doesn't work, check with Don.

I don't see a problem if done in a professional manner. If it was an obvious ham fisted attempt, then we would have a problem.

If unsure, send me an email, as I think it may need to be gauged individually.

I would usually encourage a genuine attempt at a user fix, than to return the goods, at a time and financial expense for both parties.

Cheers Don...

https://www.dontronics.com

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