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Mala Dies
Published © CC BY-SA

PIR from a BBBW and Python

Did you ever want to know if you were moving while you slept?

BeginnerProtip1 hour4
PIR from a BBBW and Python

Things used in this project

Hardware components

BeagleBone Black Wireless
BeagleBoard.org BeagleBone Black Wireless
×1
PIR Motion Sensor (generic)
PIR Motion Sensor (generic)
×1
Jumper wires (generic)
Jumper wires (generic)
×1
Resistor 1k ohm
Resistor 1k ohm
×1

Software apps and online services

Python
Adafruit_BBIO

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)
Solder Wire, Lead Free
Solder Wire, Lead Free

Story

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Schematics

Finally...the PIR Sensor in Fritzing from Adafruit and the LED all in One!

https://github.com/adafruit/Fritzing-Library/tree/master/parts

LED Schematic

This is a schematic of P8_12 on the BBB to the Anode of a LED to the Cathode of the LED to a 1K resistor to the GND on the BBB (P9_01).

Code

PIR Sensors for Everyone!

Python
This software makes it so you can detect your motion in your sleep at different intervals.
import Adafruit_BBIO.GPIO as GPIO # import the Adafruit Library for GPIO
import time # import the time module so we can use time.sleep
  
GPIO.setup("P8_12", GPIO.OUT) # set up the pin as an outward pin
PIR_PIN = "P8_8" # make an alias for this pin number
GPIO.setup(PIR_PIN, GPIO.IN) # set up this pin for inward communication
GPIO.add_event_detect(PIR_PIN, GPIO.RISING) # in between HIGH and LOW, GPIOs   # have an edge. This edge can be rising or falling or both. We here are using  # interrupts or edge detection. So, for RISING, like in our example, the
 # interrupted edge we catch is from LOW to HIGH or RISING.
  
while True: # use a while loop "while" it is True so only interruptions via
    # control-c will interrupt.
  
   if GPIO.event_detected("P8_8"): # if the event is detected from the PIR       # Sensor, do something.
       GPIO.output("P8_12", GPIO.HIGH) # This is what we "do." The LED goes          # HIGH/On.
       print("Motion Detected!") # print to the console.
       time.sleep(10) # wait 10 seconds until another "task" takes place.
  
   else: # or maybe something else is going on.
       GPIO.output("P8_12", GPIO.LOW) # The LED goes off/LOW and stays off           # while nothing is being caught moving on our edge.
       print("You are not moving while sleeping!")
       time.sleep(10)

Credits

Mala Dies

Mala Dies

3 projects • 1 follower
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