Hat for shutting down the Pi with a button

Question

Are there any Raspberry Pi hats which allow to shut down the Pi by pressing a button ?

Are there any DIY open hardware projects which describe step-by-step how to build such a hat ?

You only need a switch and 2 wires. See http://raspberrypi.stackexchange.com/a/42945/8697 for my solution — Milliways, Apr 16 '16 at 22:51
This functionality is available in the kernel. https://www.kernel.org/doc/Documentation/gpio/drivers-on-gpio.txt and https://www.kernel.org/doc/Documentation/devicetree/bindings/gpio/gpio-poweroff.txt — Alistair Buxton, Apr 17 '16 at 11:08

score 1 · Answer 1 · answered Apr 16 '16 at 19:42

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No, but there are open software options, such as Adafruit's GPIO-Halt which'll do what you ask, with a default pin of #21, which is the last pin on J8. You change the pin in the .c file, if desired.

answered Apr 16 '16 at 19:42

Alexander M

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score 0 · Answer 2 · answered May 16 '16 at 21:22

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This 'Pi Supply Switch – On/Off Power Switch for Raspberry Pi' might be of interest to you: Pi Supply Switch

answered May 16 '16 at 21:22

robosnacks

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score 0 · Answer 3 · answered Jul 16 '16 at 09:03

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I use a Button that flips in 2 ways. One for sending a signal to a GPIO Pin to shut it down via software. And the other to the RUN pin to start it back up again.

answered Jul 16 '16 at 09:03

Michi Lo

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score 0 · Answer 4 · edited Oct 18 '18 at 07:42

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To anyone still interested in this question, this might be worth noting as a prepackaged solution: Pimoroni: OnOff SHIM.

edited Oct 18 '18 at 07:42

Greenonline

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answered Oct 18 '18 at 05:30

Michael Butler

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Hat for shutting down the Pi with a button

4 Answers4