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How would I modify this circuit for battery powered string lights?

How would I modify this instructable to use a string of lights that runs on 2 AA batteries?
http://www.instructables.com/id/Make-Music-Controlled-Christmas-Lights/

I figured it would be a matter of using a different solid state relay but I'm not sure. If it IS just a matter of switching ssr's, any idea what one to use?

Thanks in advance

You should be fine with the relay used in the original, or even one with a lower voltage rating, as the one in the video is good for 24V, and the pair of AAs will only output 4V.
thealeks (author)  The Skinnerz2 years ago
great thanks! now i can get started on it!
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