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In this short video, the author is demonstrating how LED brightness is automatically adjusted. This may help you see better in direct sunlight or during night. He is not using any microcontroller for it.

Courtesy: ElectronFun.com


 

 

 

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1 COMMENT

  1. so does this means that the auto brightness in our phone is done with a similar principle??
    or can we do that thing using this cheaper way??

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