Hi, I need to use LRD only on a exceptional moment on my battery powered system. I have this: [image] To turn off the LDR itself in order to avoid power consumption I'm thinking to do this: int LDR_pin = A0; int LDR_value = 0; void setup() { pinMode(LDR_pin, INPUT_PULLUP); // set LDR pin mo…

You got it, but you need a good resistor, like 4.7K and see if you get a good enough to get a reading.

How to disable LDR?

kamoba April 8, 2023, 5:46pm 16

No I think that's fine for me, I was just responding to @TomGeorge who said

Is that measurement at the output pin with the LDR circuit connected to the output pin?

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