🛠️ Steven Gong

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  • Infrared Sensor
  • Passive Infrared (PIR) Sensor

Apr 24, 2023, 1 min read

Infrared Sensor

I remember seeing these IR Sensor when first learning Arduino https://www.amazon.ca/Geekstory-HC-SR501-Pyroelectric-Infrared-Modules/dp/B07X31RVJY/ref=sr_1_13?keywords=infrared+sensor&qid=1673300787&sr=8-13

Passive Infrared (PIR) Sensor

I think those are the same thing, except they are lower energy?

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