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From: Bernd Froehlich <befr@eaglesoft.de>
Newsgroups: comp.os.linux.misc
Subject: Re: Anybody Seen a Simple LED "Fail-Over" Circuit ?
Date: 26 Nov 2024 09:00:48 GMT
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On 26. Nov 2024 at 08:24:12 CET, "186283@ud0s4.net" <186283@ud0s4.net>
wrote:

> LEDs are great, but never "forever". They DO
> fail - but for some safety apps you can't
> just HAVE things go black.

Hmm, just a thought:
If I understood the problem correctly, you want the LED to show some
failstate, right?

What if you switch the LED on when everything is fine and off would signal
a fail?

If the LED is off then you know it´s either a fail or the LED is broken.
Either way you have to do something.