Question about SD card shield for Arduino Uno

[Ali Kazemian]

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.

 

[Gryd3]

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.

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.

 

[Ali Kazemian]

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.

Thanks for your response. Does disabling the card mean that there is no file open from SD card?

 

[Gryd3]

Thanks for your response. Does disabling the card mean that there is no file open from SD card?

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.