gpiozero -> MotionSensor and LED

Question

I am trying to follow this example. Everything works fine as expected with the following two lines

pir.when_motion = led.on
pir.when_no_motion = led.off

but things stop working when I assign an event handler to pir.when_motion

I can see function, turnOnLed, and turnOffLed getting invoked but can't see LED turning on and off.

Below is my code. Am I missing anything?

from gpiozero import MotionSensor , LED
from signal import pause

import time

pir = MotionSensor(4)
led = LED(16)
def logMessage(msg):
            print(msg)
    def turnOnLed():
            logMessage('About to turn on LED...')
            led.on
            logMessage('LED turned on...')
    def turnOffLed():
            logMessage('About to turn off LED...')
            led.off
            logMessage('LED turned off...')
    def myfun():
            logMessage('Motion detected...')
    
    
    pir.when_motion = led.on         #If I replace led.on with event handler trunOnLed,  I cant see LED switching on.
    pir.when_no_motion = led.off
    logMessage('Before pause')
    pause()

Also, I have noticed that pir.when_no_motion event is getting triggered immediately after about 4 seconds of pir.when_motion even, if there is a continuous motion. Any pointers on what could be wrong?

score 0 · Answer 1 · answered Aug 18 '20 at 03:40

0

It was a very small mistake.

Inside function turnOnLed I should have invoked function led.on

Fixed issue by replacing led.on with led.on()

answered Aug 18 '20 at 03:40

user2243747

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gpiozero -> MotionSensor and LED

1 Answers1