AVR-Chat

What is the barrier material? If it is metallic, a simple damped LC tank
circuit could easily handle <=3cm detection.

DDR

On Wed, 2004-12-22 at 04:57, rajesh parwani wrote:
> hi friends,
>                im searching for the sensors which can detect barrier
> at a distance of   upto  3  cm  and not more . well my working
> condition  have lot of ambient light . i would prefer to fix the
> setting once for any lighting so that need not change it from place to
> place. please suggest me some way . should i go for ultrasonic sensor
> or the normal opto. if possible send me some circuit
>  
> regards, 
> rajesh  
> 
> Yahoo! India Matrimony: Find your life partner online.
>                         Yahoo! Groups Sponsor
> 
> 
>                         Get unlimited calls to
> 
>                              U.S./Canada
> 
> 
> 
> 
> ______________________________________________________________________
> Yahoo! Groups Links
>       * To visit your group on the web, go to:
>         http://groups.yahoo.com/group/AVR-Chat/
>           
>       * To unsubscribe from this group, send an email to:
>         AVR-Chat-unsubscribe@yahoogroups.com
>           
>       * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
>         Service.
>