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  Hacking the recordable post card

  Ellen 00:16 on November 18, 2009 | 0 Permalink | Reply
  Tags: circuit board, electronics (3)

  I saved this post card where you can record a message and play it. It works with a slim battery but I powered up with a 9V battery. This will be used for something exciting!

  

  Recordable post card

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