tjc02002 Posted January 23, 2017 Share Posted January 23, 2017 Hey guys. I was wondering if anyone had any similar problems as me and if there are any fixes. I have 2 of Uncle Sasch's rev2.0 shields with latest firmware and I cant get my SD cards to work. They are cheap no-name Chinese 2GB SD cards off ebay. They are not microSD cards, they are regular SD cards and the shield has a regular SD card reader installed. I have 2 identical setups with 2 identical SD cards. The cards work fine in my computer and I can put files on them and stuff but I cant get the pin2dmd device to save any settings or read them from the files on the cards. Are these SD cards just duds or could they maybe be formatted a different way or something to get them to work? any help is appreciated, thank you. -Tom Link to comment Share on other sites More sharing options...
Rappelbox Posted January 23, 2017 Share Posted January 23, 2017 Format them as fat32 and try again If they still don't work try with other cards, maybe they're both faulty. If a third card still won't work maybe talk to UncleSash Link to comment Share on other sites More sharing options...
tjc02002 Posted January 23, 2017 Author Share Posted January 23, 2017 I did try fat32 but ill try it again. Is there any other settings when formatting the card that might help? What about bypassing the circuitry on the SD card module, that stuff seems to be unneccesary based on some other posts ive seen. problem is that I don't have any other SD cards to try right now so I have to buy them... Link to comment Share on other sites More sharing options...
Rappelbox Posted January 23, 2017 Share Posted January 23, 2017 Depending what you use the dmd for. If you use it for vpin then the microSD is not mandatory. What firmware do you use, did you try to update the firmware? Maybe you could also resolder the card reader joints. Link to comment Share on other sites More sharing options...
Content Provider lucky1 Posted January 23, 2017 Content Provider Share Posted January 23, 2017 There are different communication modes for SD cards (SPI,1bit,4bit,UHS-I,UHS-II) Some cheap chinese cards do not support all modes. We need SPI. Link to comment Share on other sites More sharing options...
tjc02002 Posted January 31, 2017 Author Share Posted January 31, 2017 got a name brand sd card(Sandisk) and that works fine. cheap Chinese SD cards were the problem. Link to comment Share on other sites More sharing options...
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