HOW TO – Make a color sensor from a reversed LED and Op amp

Technology
HOW TO – Make a color sensor from a reversed LED and Op amp

Reversedled
David writes –

One of the first lessons that an electronics student learns is that an LED provides light from current flow. But, did you know that an LED put in backwards provides current flow from light? Yes! It’s true.

HOW TO – Make a color sensor from a reversed LED and Op amp – Link.

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