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| = Description =
| | #REDIRECT [[Passive Infrared Sensor]] |
| A PIR Sensor can detect motion, it is also called motion sensor. It detect moveing people or animals. PIR stands for passive infrared. Here we use the SR602.
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| It has 3 connectors:
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| * - connected to GND
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| * + connected to 3.3V
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| * Out - digital output is 1 if motion is detected
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| [[File:Pir3.PNG|x300px]] | |
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| This one is the HC-SR501 sensor and it should be connected to 5V, GND and a digital Pin.
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| [[File:Pir2.JPG|x300px]]
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| [[File:Pir4.JPG|x300px]]
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| = How to connect it electrically =
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| [[File:PIR-electro.PNG|x400px]]
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| = How to control it in MicroPython =
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| Reading the value and printing it to the console
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| <syntaxhighlight lang="python" line='line'>
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| #Example usage for ESP32
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| from machine import Pin
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| from time import sleep
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| # digital input on pin 26
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| pir = Pin(26, Pin.IN, Pin.PULL_UP) # enable internal pull-up resistor
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| while True:
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| pirVal = pir.value()
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| print(pirVal)
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| sleep(1)
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| </syntaxhighlight>
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| = Related Tutorial Videos =
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| <youtube>C0W-wI0qHIQ</youtube>
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| <youtube>dVE7R-Spf6M</youtube>
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Latest revision as of 09:46, 11 June 2024