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    Re: DIY Blinking LED's

    the link to download it still works even if the youtube one has been pulled.
  2. Replies
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    Re: DIY Blinking LED's

    Nice Circuit!

    One small thing you could do would be replace the TIP31 with an opto-relay that way if something went wrong your sound card would be protected. With this one if the TIP31 shorts you...
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