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Shutdown-switch - which GPIO is free?


Micha_AC
Posts: 34
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(@micha_ac)
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Joined: 2 years ago

Hi,

some time ago I posted about my wish adding a power LED (which I already have done - connected to gnd + 3.3V adding an 1.4K resistor) and an shutdown-switch.
Latter one I haven't done, because I didn't know which GPIO is free for this.

I already mounted the switch, connected to 3.3V using an 10K resistor. So I only need to solder it to the approprirate pin. Which one is free?

btw: sorry if my question still exists here anywhere... I couldn't find it. Usability of this forum isn't quite as good as an good old phpBB or someshing like that. How can I find my own posts? :D

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mario
Posts: 556
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(@mario)
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Joined: 3 years ago

Something similar was already done by a user: 

https://github.com/helgetnt/fabscanpi-extender

Only the Serial GPIO's of the Raspberry are used. Have a look at the schematics. 

https://github.com/watterott/RPi-FabScan-HAT/blob/master/hardware/RPi-FabScan-HAT_v12.pdf

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