Re^2: Continuous or timed?

Think about a status LED - perhaps blinking means good - stuck on(or off) means bad

I did consider one or more LEDs when the project first came into being.
But, given that the user is blind, there is nobody to be able to see them! Perhaps we could train Yago, his assistance dog, to look and see if there is a light on...

Comment on Re^2: Continuous or timed?

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Re^3: Continuous or timed? by Marshall (Canon) on Dec 17, 2020 at 20:00 UTC
For fatal Motherboard errors, there are "audible beep codes". Don't know what that means in context of a modern "all-in-one" motherboard but, a couple of computers ago, when my computer failed to boot, I called a friend and had him look up the beep codes to find out "dead video card". The stock Pi doesn't have a way to beep, but there is probably an add-on for that? If you ever do add some beep codes, think about how annoying it can get if it is beeping all the time! Another problem is ill timed beeping. I had one device that decided to beep at me every night at 3 AM. I have a lot of gizmos that can beep (smoke alarm, CO2 alarm, etc.) I had to wake up at 2:50 AM several nights in a row to wait for this thing and I gradually narrowed it down to find the "unhappy device" and feed it a new battery!	[reply]
Re^4: Continuous or timed? by Bod (Parson) on Dec 17, 2020 at 21:15 UTC
The stock Pi doesn't have a way to beep, but there is probably an add-on for that? I wouldn't inflict the prospect of random bleeping on someone...especially not someone who is blind and unable to work out where the bleeping is originating from.	[reply]