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Re: Power on/off button


 

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Hmmm.. that's a new one to me and thanks for mentioning it.? That said, I use a modified version of this older-style shutdown method mentioned at .? My concern for the new way is I had a considerable amount of false shutdowns with the original script so I added both software debouncing and also a required 5 second hold-down of the button to ensure it's a) not a glitch / RFI / etc and you REALLY want the Pi to go down.? I also see this new approach defaults to the use of the GPIO pin#3 which is also the I2C SCL signal.? That's a serious bummer as I personally use I2C all the time for say RTC chips, LCD displays, etc. but fortunately, this is reconfigurable to GPIO#1 though that will impact reading of HATT ID eproms.

--David
KI6ZHD



On 08/20/2023 09:35 AM, Scott Eckert via groups.io wrote:

I needed an easy power ON/OFF button on my RPi4B and came across this approach at??which worked great. It does the equivalent of "shutdown" command. Read the link for additional info before implementing.

Simply add the line below to the /boot/config.txt and add a push button between gpio_pin 3 and ground.

dtoverlay=gpio-shutdown,gpio_pin=3


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