Alt-BEAM Archive
Message #08657
To: beam@sgiblab.sgi.com
From: Senior kyled@cruzers.com
Date: Wed, 29 Dec 1999 15:12:30 -0700
Subject: [alt-beam] Re: Choloroplast: Was FLED photovores
About the games... When are they? It seems that it is never really
officially posted on the list or on a web page (Or at least I've never
seen it!). When and where...
Thanks!
Kyle
> Les Davis wrote:
>
> ----- Original Message -----
> From: Maynard
> To:
> Sent: Wednesday, December 29, 1999 9:38 AM
> Subject: Choloroplast: Was FLED photovores
>
> > I've still got a bunch of chloroplast printed circuit boards free to
> those
> > who ask! Happy new year!
> >
> > Craig
> >
> >
> Hi Craig,
>
> Les here, my students would be most grateful for any that you could
> spare. They are exclusively building chloroplast engines now, I've
> got them free forming in most cases but some have been whining for
> boards. They have been asking if I'd show them how to make their own,
> but I'm not sure how you'd feel about that as they are your design.
> Besides the etching tank needs repair....... Geez, there's always
> something......
>
> Thanks, Hope to see you at the games (Wilf and I were talking about
> driving out, we'll see.)
>
> Les
8658 Wed, 29 Dec 1999 18:32:46 -0500 [alt-beam] Re: FLED Photovore beam@sgiblab.sgi.com Bob Shannon Um,
The FLED solar engine should not blink at all.
Somethings wrong here.
The real disadvantage of the classis FLED photovore is
that you needed 2 solar cells. The only way the FLED
solar engine 'knew' where the light is was by the difference
in firing rate of the 2 solar engines.
1381 based photovores add photodiodes to detect the direction
of the light.
I beleive that I have seen a schematic for a FLED photovore
that used a single solar cell, but added some Cds photocells
to measure the direction of the light.
Just how did you connect two FLED solar engines with a 100K
pot to make a photovore? Was this with a single solar cell?
Did it use other photosensors?
Max Inggal wrote:
> This is the same problem I had. I didn't want to wait
> 3 weeks for my shipment of 1381s to come in. So I
> went do to old Rat Shack and picked up a FLEDs and
> with is a few minutes I got a FLED engine going. But
> for a FLED photovore just make 2 solar engines and
> combine them with a trimpot around 100k. I've tried
> it before there shouldn't be any reason why it
> shouldn't work now. Also FLED photovores are alot
> less efficient but are easier to make and alot lot
> cooler(their "eyes" blink).
>
> Later!!
> __________________________________________________
> Do You Yahoo!?
> Talk to your friends online with Yahoo! Messenger.
> http://messenger.yahoo.com
Home