Electronics > Beginners

Timer alarm

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Wimberleytech:
golden_labels:

Fine.  I did build it inside of 20 minutes using stock code. 

Yes, deadbug and hot-glue can be made to work...ugh.

As for me being an analog guy...true...there was no way for you to rebut that, sorry for suggesting.  But FYI, I co-authored an analog book 30 years ago that is still in print and in 3rd edition in both english and chinese...so...yeah I am an analog guy (OLD analog guy to be accurate)

darinsquared:

--- Quote from: Wimberleytech on December 01, 2019, 08:11:39 pm ---All of these ideas are fine, by as I said in my original response, an Arduino solution is incredibly simple.

--- End quote ---

That is a great idea for people without an irrational fear of programing.  But I should challenge myself.

Wimberleytech:

--- Quote from: darinsquared on December 01, 2019, 11:06:26 pm ---
--- Quote from: Wimberleytech on December 01, 2019, 08:11:39 pm ---All of these ideas are fine, by as I said in my original response, an Arduino solution is incredibly simple.

--- End quote ---

That is a great idea for people without an irrational fear of programing.  But I should challenge myself.

--- End quote ---

My first program was in Fortran 77 on an IBM/Amdahl 360 using punch cards.  For years I had an irrational fear of the damn things.  No more!

golden_labels:

--- Quote from: Wimberleytech on December 01, 2019, 10:22:54 pm ---Fine.  I did build it inside of 20 minutes using stock code.
--- End quote ---
How is your WDT handler signalling failure and, if it does that in a fail-safe manner by beeping, how do you solve the possibility that it may occur in a middle of an already running beep?

Don’t bother answering the above question. Before one does even fully understand the question, the 555 circuit is already shown to be right.

You got your point: possibly you have proven that it is possible to implement that. I have no slightest idea why you wanted to prove that, as no one ever said otherwise.

I do not have an irrational fear of programming. I have a rational respect for the risk involved and realization that I am merely a human.


jhpadjustable:
This being a safety application, I 100% understand if someone doesn't want to bother about with programming, let alone gather all the tooling for it on top of the interfacing and so on. There are times to stretch and there are times to K.I.S.S. and get it done in the way you're surest-footed.

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