Alt-BEAM Archive
Message #13432
To: beam@sgiblab.sgi.com
From: SG sparkyg@seark.net
Date: Fri, 14 Apr 2000 22:40:11 -0500
Subject: Re: My Nervous Head...
At 01:41 PM 4/13/00 -0400, you wrote:
>I finally built a PSH based on Wilf's Beam Head tutorial.
>....... However, it seems to quiver quite a bit
>when it locks onto a light source,...
sorry for not replying sooner, i missed this message in a ton of email
Roy... heres what you need to do
(this werked for me)
the resistor in between the two phtodiodes (or LDRs) on
the circuit (attached to pin 17) sometimes needs to be
tweaked. Something to do with the changing levels of
ambient (sp?) light in the room.
solution:
change that resistor to a 1 meg pot, increase resistance (or decrease it)
until the little shaky guy quits being so nervous.
This WILL work.
-Sparky
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