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Topic: Combine Motion Sensor and Photo Resistor (Read 87 times) previous topic - next topic



I'm working on a light as an object project in my lighting class. I can work with photo resistor and motion sensor individually but I need to use both in the same project. I don't know how to connect them on my breadboard and arduino uno. I'm an architect and my knowledge about these topics is in the basic level. I'll be appreciated if someone will help me. Thank you.


For LDR (light-dependent resistor, aka photo-resistor):


The motion sensor may have a logic output (suitable for a digital input), but you've not said what it is -
everything in electronics is down to the datasheet, so try and check them out whereever possible and
learn to skim them for the essentials.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]


Common PIR sensor modules have space for a small LDR under the white dome.
Solder one in, and you have a PIR sensor that only works when it's dark.

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