[sdiy] debouncing and bouncing (check address!)

[Dave Krooshof]

You replied to me, in stead of to the list.
It happens more often, as I have the same ISP.

check your addresses: "Synth-DIY" <synth-diy at dropmix.xs4all.nl>

Dave

http://www.xs4all.nl/~krooshof

>Maybe I'm missing the point, but Maxim (http://www.maxim-ic.com) has 
>switch debouncer ICs... Haven't tried them out, though, because when 
>I sent for some samples, they gave me all SMT on accident (...or WAS 
>it?...) If you decide to use then for some reason, could you tell me 
>how well they work?...
>
>You could also ust use a magnet and hall effect sensor to make a 
>bouncless switch... I've never fully understood why technology 
>wishes to comphensate for its problems instead of just correcting 
>them...
>
>-271
>>      What I do to debounce switches is use an RC filter with a 74HC14 schmitt
>>trigger.  You need the hysteresis to complete eliminate the bouncing.
>>
>>Peter Grenader wrote:
>>
>>>   I'm trying to use a mechanical switch as an option to advance a sequencer
>>>   count (manual tuning).  I'm getting about 15 million steps for 
>>>each touch of
>>>   the switch due to it bouncing.  I don't want to run this into an 
>>>active one
>>>   shot, for reasons I don't need to go into.  Was hoping I could make a real
>>>   simple passive rc on the faceplate, at the switch itself, to take care of
>>>   it.  Tried hanging one at the wiper of the switch, didn't work. 
>>>POssibly my
>>>   values didn't cut it.
>>>
>>>   any suggestions?
>>>
>>>   thanks in advance,
>>>
>>>   Peter
>>
>>--
>>   -Jim
>>------------------------------------------------
>>* Visit:http://www.silcom.com/~patchell/
>>*-----------------------------------------------
>>*I'm sure glad Merry Christmas comes just once a year
>>* -Yogi Yorgensen
>------------------------------------------------

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