I'm trying to build some system that would detect light and turn a 12v led strip ON. The only power that I have available is a 9v battery.
I found some Arduino compatible boards but it seems overkill to use an Arduino for something that simple.
So I searched for a simple photo-resistor and found this one. However I am not sure it that will work.
My goal would be to wire the battery to the photo-resistor and the lamp in series and the photo-resistor would act as kind of a potentiometer effectively dimming the led strip as the light goes down.
However, I am not too sure about the values announced by the photo-resistor with a maximum of 150v dc (my 9v battery is way below so it should be no problem but is it actually enough then?) and a maximum of 100mW for which I am not sure if it shall be enough to power the le strip.
- I do know that 9v is too low and thus the led strip is already not at its max brightness. I tested the leds and battery and it is working with sufficient brightness for my usecase.
- I have some size constraints and that is why I am looking for a solution that will be as small as possible