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[DPRG] Fwd: Any ideas?

Subject: [DPRG] Fwd: Any ideas?
From: Jim Brown james_121 at yahoo.com
Date: Sun Oct 8 16:57:28 CDT 2000

--- Hank <fhb2000 at pacbell.net> wrote:
> Date: Sun, 08 Oct 2000 13:22:39 -0700
> From: Hank <fhb2000 at pacbell.net>
> Subject: Any ideas?
> To: jimgbrown at home.com
> Organization: Pacific Bell Internet Services
> 
> Do you or someone you know have any optoelectronics
> ideas?
> It's a a silicon detector problem.  I'm utilizing the
> BS2SX and a
> 5mw laser diode module @ 810nm and a silicon detector
> with a
> 810nm narrow bandwidth filter to measure when this IR
> laser pointer
> strikes black or white.  Laser and detector are side by
> side and measure
> light
> reflected back.  I know it's possible or those long range
> bar code
> scanners
> wouldn't work.  Only need object detection not bar codes.
> I can only detect out 2-3ft, but need 8ft range.  I don't
> understand the
> 
> capacitance or resistance to make detector more
> sensitive.
> I think my op amp is maxing out too.
> Thanks - hope you can help,
> Hank Burbeck
> 
> 
> 
> 


=====
------------------------------------------------------
Jim Brown      james_121 at yahoo.com

jimgbrown at home.com http://members.home.net/jimgbrown
jim_brown at adc.com jbrown at dprg.org  http://www.dprg.org

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