Before setting out to design a circuit to control my windshield wipers, I needed to do some research on what exactly I was up against. That would be this:
Doing Experiments On My Car in the Night and Scaring my Neighbors.
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Tag Archives: Original research
Using LEDs as Light Detectors (LDDs?)
Whaaat? You can do that?! You need phototransistors or photodiodes silly! Turns out, you don't. IT'S A CONSPIRACY!
Seriously though, LEDs can be used as photo detectors. It's not as simple as using a proper photodiode, but it's a pretty neat trick and can save you a few parts if you're working on a budget.