Alt-BEAM Archive

Message #00086



To: Jinzo@aol.com, beam@corp.sgi.com
From: Dave Hrynkiw dave@solarbotics.com
Date: Mon, 01 Feb 1999 12:15:18 -0700
Subject: [alt-beam] Re: Photopopper


At 11:23 AM 2/1/99 , Jinzo@aol.com wrote:
>When both diodes are in full light,
>will both motors spin, just one, or whats the deal?

For the vast majority of times, NO. There will be a slight imbalance
between the light falling on the PD's, and that will cause only one of the
motors to fire. In very strong light, you can get the occasional "dual-pop"
where both motors fire, but that won't happen very offten.

> Also, same question with
>covering one diode or the other, will the opposite motors spin to turn the
>robot around to find light?

That's exactly correct.

Regards,
Dave
---------------------------------------------------------------
"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
2 vowels. Pronounciation? _SMITH_".
http://www.solarbotics.com

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