HiLetgo 3pcs Mini SR602 Motion Sensor Detector Module Pyroelectric Infrared Sensory Switch High Sensitivity for Arduino PI

greetings youtubers I'm Rick the tech enthusiast here with the next a lesson number 17 h c sr 501 PIR sensor in this lesson we'll check out the HC sr 501 PIR sensor that is provided with the elegant it will build and configure a simple circuit that is provided in the tutorial to demonstrate the functionality then we'll build a custom circuit to provide audio and visual indications so let's start building the HC sr 501 PIR sensor that is included in the kit is a passive infrared sensor and one of the few sensors that can do work without the Arduino first you'll notice that the unusual-looking dome that dome is comprised of fernell lenses that focus the infrared light onto the sensor the pyroelectric sensor which is located underneath the dome has two slots that detect infrared like when a person passes nearby infrared light strikes one of the slots before the other causing a positive or