Published August 12, 2019 © CC BY-SA

PIR from a BBBW and Python

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

BeginnerProtip1 hour1,786

Things used in this project

Hardware components

BeagleBoard.org BeagleBone Black Wireless

PIR Motion Sensor (generic)

Jumper wires (generic)

Resistor 1k ohm

Software apps and online services

Python

Adafruit_BBIO

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Story

Hello,

I would be lying to you if I told you I was using this software to test if I was sleeping and moving around while sleeping. But...

This PIR Sensor could be used for this type of testing, e.g. "Did I move while sleeping between a specific interval during the night?"

...

import Adafruit_BBIO.GPIO as GPIO
import time
  
GPIO.setup("P8_12", GPIO.OUT)
PIR_PIN = "P8_8"
GPIO.setup(PIR_PIN, GPIO.IN)
GPIO.add_event_detect(PIR_PIN, GPIO.RISING)
  
while True:
  
   if GPIO.event_detected("P8_8"):
       GPIO.output("P8_12", GPIO.HIGH)
       print("Motion Detected!")
       time.sleep(10)
  
   else:
       GPIO.output("P8_12", GPIO.LOW) 
       print("You are not moving while sleeping!")
       time.sleep(10)

This is free software that I use while researching ideas and using an if/else statement.

...

First...assemble the PIR Sensor and the LED.

On your PIR Sensor:

You have three pins if purchased from Adafruit at https://www.adafruit.com/product/189.
One is GND, another is OUT, and the last one is 5v. These three pins are situated like this to the BBB.
PIR GND to BBB GND
PIR OUT to BBB P8_08
PIR 5v to BBB vdd_5v (this vdd_5v pin needs the 2A power adapter to be plugged in while testing this software)

Now...we need to set up our LED.

BBB GPIO (P8_12) to Anode of the LED
Cathode of the LED to 1K ohm resistor to GND on the BBB

Sort of like this idea from Fritzing:

LED Action

Second...try the source to attempt to make your LED light once the PIR Sensor has detected your movement.

...

If the PIR sensor is not detecting your movement, try to use the 2A adapter like this one: https://www.sparkfun.com/products/15312.

If you want, from what I have learned, you can also use sys_5v on pin P9_7 or P9_8. vdd_5v is P9_5 and P9_6.

Seth

Code

PIR Sensors for Everyone!

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
  
   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

Seth

32 projects • 12 followers

Stay there and someone will find you...

PIR from a BBBW and Python

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Schematics

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

LED Schematic

Code

PIR Sensors for Everyone!

Credits

Seth

Comments

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PIR from a BBBW and Python

PIR from a BBBW and Python

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Schematics

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

LED Schematic

Code

PIR Sensors for Everyone!

Credits

Seth

Comments

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