Difference between revisions of "PIR Sensor"
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| − | This one is the | + | |
| − | and it should be connected to 5V, GND and a digital Pin. | + | This one is the HC-SR501 sensor and it should be connected to 5V, GND and a digital Pin. |
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Revision as of 23:35, 11 January 2021
Contents
Description
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.
It has 3 connectors:
- - connected to GND
- + connected to 3.3V
- Out - digital output is 1 if motion is detected
This one is the HC-SR501 sensor and it should be connected to 5V, GND and a digital Pin.
How to connect it electrically
How to control it in MicroPython
Reading the value and printing it to the console
1 #Example usage for ESP32
2 from machine import Pin
3 from time import sleep
4 # digital input on pin 26
5 pir = Pin(26, Pin.IN, Pin.PULL_UP) # enable internal pull-up resistor
6
7 while True:
8 pirVal = pir.value()
9 print(pirVal)
10 sleep(1)
Related Tutorial Videos
