Alt-BEAM Archive

Message #08772



To: beam@sgiblab.sgi.com
From: Bruce Robinson Bruce_Robinson@telus.net
Date: Sun, 02 Jan 2000 08:55:46 -0800
Subject: [alt-beam] Re: Site update


Richard Caudle wrote:
>
> What's yer URL? I don't think that I've ever seen your site.

Oops.

http://www3.telus.net/rfws/bwi/index.html

B.



8773 Sun, 2 Jan 2000 12:17:02 EST [alt-beam] Re: D1 beam@sgiblab.sgi.com Bumper314@aol.com In a message dated 1/2/00 9:48:54 AM Mountain Standard Time,
bshannon@tiac.net writes:

> But the chloroplast does not do the same thing as the D1 engine. Are you
> sure
> this is what you want?

I'm looking into your circuit right now...I appreciate the info

steve



8774 Sun, 02 Jan 2000 10:15:22 -0700 [alt-beam] was: Robotgames is: Telluride workshops beam@sgiblab.sgi.com Dave Hrynkiw At 07:15 PM 1/1/00 , jester96beam@iname.com wrote:
>Why is it that robot events are never held during the summer holidays? I
>was hoping I could attend the WCRG this year, but I have school!
>
>Is there anything that takes place during the holidays?

In previous years, it was always in May. We were hoping by having it in
June that would help open it up some.

There is going to be another BEAM Telluride workshop in Colorado this year
the first 2 weeks of July. If you're interested in attending, you can get
full details from:

mailto:academy@telluridecolorado.net

Telluride Academy
P.O. Box 2255
725 West Colorado Ave., Rm. 309
Telluride, CO 81435
***
phone ~ (970) 728-5311
fax ~ (970) 728-5312
email ~ mailto:academy@telluridecolorado.net
website ~ www.tellurideacademy.com
---------------------------------------------------------------
"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



8775 Sun, 2 Jan 2000 09:53:17 -0800 (PST) [alt-beam] Re: PSH question beam@sgiblab.sgi.com Darrell Johnson Well, what do you want out of your PSH? It's kind of a
balancing act between motor efficiency, cap size and
trigger voltage. If you are using a failry inefficient
motor your best bet would be to use a 1381J with a
smallish cap. The motion you'll get will be similar to
the charge/discharge cycle of a photopopper... it
won't move very far per discharge, but will be active.
If you have a more efficient motor, go for a bigger
cap and a higher trigger voltage. My PSH uses an ESCAP
motor, a .054F cap, and a 1381N trigger. (values are
from memory.. don't have the bot with me) This type of
setup gives you a lot more to work with.. It takes a
few minutes to charge, but when the circuit is active,
it'll run the motor for about 5-8 seconds depending on
how much additional charge it picks up while sitting
'locked on'. The setup also allows a higher energy
reserve for when there isn't enough light to power it.
Mine will stay active 'locked on' in darkness for
about a half hour or so, until the charge falls below
the reset voltage.
The best thing to do would be to experiment.. I have
abunch of different 1381 values that I use for
breadboarding, to get optimal performance.. It's a bit
of a price hit I guess, but the end result will be
better.

Hope this helps,
darrell

--- Thomas Pilgaard Nielsen wrote:
> Would one be to prefer - if any - of
> either the J or N version
> and what would be the effect?
>



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8776 Sun, 07 May 2000 17:43:22 -0500 [alt-beam] Re: PSH question beam@sgiblab.sgi.com SG At 09:53 AM 1/2/00 -0800, you wrote:
>My PSH uses an ESCAP
>motor, a .054F cap, and a 1381N trigger.

Darrell,
what kind of cap are you using and where did you get it?

all caps larger than 4700uf that i find are either rated for too low a
voltage, or are the wrong "kind" according to Wilf and others in that they
leak their charge too quickly.
are these caps available?
Thanx!
-Sparkee

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