I am starting to play with my Arduino Uno and have a question about hooking a photoresistor to my Uno. Most tutorials connect the photoresistor like this using a second resistor: +5V --> PhotoResistor --> . --> 10K --> Ground | Pin X I think this t…

Read voltage drop from photoresister without a second resistor?

Erni January 17, 2013, 7:53pm 4

Also pin x is connected to ground, so your reading will allways be zero

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