Project:Arduino SD Card

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Revision as of 09:44, 7 May 2012 by Msemtd (talk | contribs)
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I'd like a nice way of storing masses of data for easy access from the Arduino. I'd also like a nice way to log data from the Arduino. SD card shields are nice but kinda pricey. I think I can do it on the cheap so I'm gonna have a go.

  • 6 resistor SD card adapter: http://didier.longueville.free.fr/arduinoos/?p=51
  • as well as the voltage divider technique to get 3.3v signals, I've seen that some of the cheap Chinese SD card adapters have an on-board 3.3v regulator and use 10k pullups to the 3.3v line
  • Micro SD card adapters are about 10p - no point in not destroying one so you can just solder pins onto the contacts
    • I used angled headers so I can hotmelt glue the adapter down to make it more sturdy for card insertion and removal
  • I want my applications to be safe for card removal whilst powered up
  • the 3.3v supply on a genuine Arduino Duemilanove or UNO is handy but I also want to use these on a Xino that has no 3.3v rail (due to no FTDI or equivalent on board)
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