Re: switch debouncing
- From: Spehro Pefhany <speffSNIP@xxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 17 Oct 2005 09:59:19 -0400
On Mon, 17 Oct 2005 06:12:58 GMT, the renowned Mac <foo@xxxxxxx>
wrote:
>Is there a standard or best way to de-bounce a switch?
>
>After googling for a bit, this seems to be a good candidate:
>
>
> VCC
> |
> \
> R1 /
> \
> /
> | Schmitt
> | trig inverter
> | |\
> +---/\/\/--+-----| >-- out
> | R2 | |/
> S1 \ = C
> | |
> --- ---
> GND GND
>
>
>R2 might be 18 k, and R1 82 k, with a 1uF cap as per this article:
>
>http://www.embedded.com/showArticle.jhtml?articleID=18902552
>
>Seems like it should work. Any comments?
>
>--Mac
If it's going into a microcontroller, firmware is almost always the
best way.
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
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.
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