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Old 23rd August 2004, 02:26 PM   (permalink)
Default Digital volume control sleep timer

Hi.

I would like some opinions on this idea.

Bassically, if listening to music when trying to get to sleep, when the music stops I wake up again. Very annoying.

So, my plan is to use a digital volume control IC (Like the one used here http://electronic-circuits-diagrams....diockt11.shtml), and to have a pulse generator to represent someone pressing the switch, and it would do this, wait a while, then give out another pulse, wait, etc, so that the volume would be lowered slowly - albeit in stages - preventing a sudden loss of volume. If it works well, I may add a circuit that will turn off all equipment (hi-fi etc) after the volume had been lowered to zero.

Obviously, a timer of some description would be required so that the music was alowed to play for a certain ammount of time, before it started to lower the volume.

Doesn't sound to complicated, I just wondered if anyone had done any thing like this before, or had any suggestions?

Cheers,

Tim
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Old 23rd August 2004, 02:29 PM   (permalink)
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A pic would be a simple way to do it... wait a minute, beginning to sound like Nigel :lol:

How about a 555 timer giving a pulse every X seconds ?
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Old 23rd August 2004, 02:32 PM   (permalink)
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lol, I KNEW someone would suggest a pic!!

a 555 timer is the simplest way, I know how i'm gonna do it, I just wondered if people liked the idea, or had any suggestions to additions for it.

Thanks anyway

Tim
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Old 23rd August 2004, 02:37 PM   (permalink)
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well, It has to work for you, and there's only 1 way to find out that it does.

Thanks for bringing the DS1669 to my attention. was looking for something like it.
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Old 23rd August 2004, 03:00 PM   (permalink)
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lol, i'd suggest the DS1869 instead, because maxim will give you two of those for free!!

quick ques though, when people order samples, what do they usually put in the 'Company' box?!?
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Old 23rd August 2004, 03:02 PM   (permalink)
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I just enter the name of the company where i work, not that it will make any diffirence.
Exo is offline  
Old 23rd August 2004, 03:04 PM   (permalink)
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ok, cheers.

grrr_arrghh is offline  
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