gpiozero button turn off LED that is already on

[duckredbeard]

I have a Raspberry Pi on my desk. It is wired to an LED and a button. My phone sends an SSH to the Pi when it gets a text message. The SSH runs this script to turn the LED on:

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from gpiozero import LED import time from time import sleep   pink = LED(20) pink.on() sleep(900)

The "sleep(900)" keeps the LED on for 15 minutes. I also have a function on my phone that sends an SSH to the same Pi to run this script, effectively cancelling the LED.

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from gpiozero import LED import time from time import sleep   pink = LED(20) pink.off()

What I want is to press a button connected to GPIO17 that either turns the LED off or runs the script to cancel the LED. I have tried this, but it does not work:

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from gpiozero import LED, Button from signal import pause   led = LED(20) button = Button(17)   button.when_pressed = led.off   pause()

I have confirmed that the button is open when relaxed, closed when pressed. I have confirmed that GPIO17 does function as a button, the LED does turn on and off by other means. I just can't get the button to turn it off.

[DeaD_EyE]

You could use the toggle-method. One press => LED on, next press => LED off, next LED on

try following:

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from gpiozero import LED, Button from signal import pause    led = LED(20) button = Button(17)    button.when_pressed = led.toggle    pause()

[duckredbeard]

It works to toggle the LED when running that script. While it was still running, I ran the script to turn on the LED then went back to your solution. The button had no effect (stayed on). Then I ran the script to stop the LED and went back to your solution. Then yours did not toggle the LED - it stayed off.

[duckredbeard]

I was offered this solution in another forum. It replaces the script that turns on the LED and incorporates a button to turn it off. This works!

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from gpiozero import LED, Button import time from time import sleep   pink = LED(20) pink.on() button = Button(7)   now = time.time() while time.time() < now + 900:     if button.is_pressed:         break     sleep(0.2)       pink.off()