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Question about SD card shield for Arduino Uno

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Discussion in 'Microcontrollers, Programming and IoT' started by Ali Kazemian, Mar 7, 2016.

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  1. Mar 7, 2016 #1
    Ali Kazemian

    Ali Kazemian

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    Oct 12, 2015
    Hi everyone. I'm using a SD Card shield with my arduino uno to be able to store my sensor readings over time. This is a Stackable SD Card shield (http://wiki.iteadstudio.com/Stackable_SD_Card_shield_V3.0#Pinmap) with a pinmap as attached here. Does this pinmap mean that I cannot use digital pins 0,1,4,11,12,13 and A4 and A5 for my other stuff like sensors? Thanks.
     

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  2. Mar 11, 2016 #2
    Gryd3

    Gryd3

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    Jun 25, 2014
    It means you will need to be creative... you can't use those as inputs or outputs that would conflict with the SDCard... but you *can* disable the card while you read or output something on those lines if you are careful about it.
     
  3. Mar 11, 2016 #3
    Ali Kazemian

    Ali Kazemian

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    Oct 12, 2015
    Thanks for your response. Does disabling the card mean that there is no file open from SD card?
     
  4. Mar 11, 2016 #4
    Gryd3

    Gryd3

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    Jun 25, 2014
    There will never actually be an 'open' file...
    The arduino will simply open the card and read a few blocks at a time. You can disable the card after this, but then will need to re-enable it again to do another read or write.
     
    Ali Kazemian likes this.
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