From Sketching with Hardware at LMU Wiki
Jump to navigation
Jump to search
|
|
| Line 1: |
Line 1: |
| − | = 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.
| |
| − | | |
| − | It has 3 connectors:
| |
| − | * - connected to GND
| |
| − | * + connected to 3.3V
| |
| − | * Out - digital output is 1 if motion is detected
| |
| − | | |
| − | [[File:Pir3.PNG|x300px]] | |
| − | | |
| − | | |
| − | This one is the HC-SR501 sensor and it should be connected to 5V, GND and a digital Pin.
| |
| − | | |
| − | [[File:Pir2.JPG|x300px]]
| |
| − | [[File:Pir4.JPG|x300px]]
| |
| − | | |
| − | = How to connect it electrically =
| |
| − | [[File:PIR-electro.PNG|x400px]]
| |
| − | | |
| − | = How to control it in MicroPython =
| |
| − | Reading the value and printing it to the console
| |
| − | <syntaxhighlight lang="python" line='line'>
| |
| − | #Example usage for ESP32
| |
| − | from machine import Pin
| |
| − | from time import sleep
| |
| − | # digital input on pin 26
| |
| − | pir = Pin(26, Pin.IN, Pin.PULL_UP) # enable internal pull-up resistor
| |
| − | | |
| − | while True:
| |
| − | pirVal = pir.value()
| |
| − | print(pirVal)
| |
| − | sleep(1)
| |
| − | </syntaxhighlight>
| |
| − | | |
| − | = Related Tutorial Videos =
| |
| − | <youtube>C0W-wI0qHIQ</youtube>
| |
| − | | |
| − | <youtube>dVE7R-Spf6M</youtube>
| |
Latest revision as of 08:46, 11 June 2024
