Alt-BEAM Archive

Message #10183



To: beam@sgiblab.sgi.com
From: BUDSCOTT@aol.com
Date: Sun, 13 Feb 2000 22:31:33 EST
Subject: [alt-beam] just an observation


Hi again, seems like i overmail this list! Anyways, the other day i was
goofin around with my two photovores and noticed something. how fast is fast
for a photovore, i measure my faster one at 1 ft in 2 min in full sunlight,
it triggered about every 2 sec. is this good, does anybody have a faster one?
how fast has anybody seen a true photovore go? anyways better go, they
started dukin' it out and i want watch, its interesting to see who wins,
crazy robots! just an observation.

-Spencer



10184 Sun, 13 Feb 2000 21:23:48 PST [alt-beam] Re: Cool Idea Answers beam@sgiblab.sgi.com "Timothy Flytch" No... pulling against a spring is very inefficient!!! use an arm to leverage
that pull into a push.... spring needs to be kept to a minimum.
Timothy...
>
>I've had a few solenoids that I've used in different applications, those
>that
>are the pull type don't have a decent spring back without some help...I've
>either had to modify the solenoid with springs that push the amature back
>out, or I've rigged up a small lever that pulls the amature back out with a
>bit of oomph...for your little bot, if you get the pull type you'll
>probably
>want to insert a spring return into it somehow...but you've gotta make sure
>that there is going to be enough energy to compress the spring in the first
>place!
>Just my thoughts
>DAn
>
><<
> Even if the solenoid isn't push, won't it still spring back, i'm pretty
>sure
> the kind i'm getting (MPJA) are push, but to the best of my recollection
> solenoids have a descent spring back, right?
>
> >>

______________________________________________________



10185 Sun, 13 Feb 2000 22:15:42 -0800 Re: BEAM at school "Robert Stein"
> At 10:19 PM 2/11/00 -0500, you wrote:
> > Speaking of getting BEAM into the school community, I'm currently
> > working
> >towards getting a robotics club at my high school. I don't know if many
will
> >be interested but if we can get around 5 people to become serious
members, it
> >would be worth it. The only thing I fear is that we'll have many people
> >getting into it just for the "coolness" of robotics but once they realize
it
> >actually requires learning and thinking, they'll drop it. Those that
remain
> >might feel pressure to drop it after all their buddies do.
> > The pros if this works out would be great. Building in the physics
lab
> >every week or so, solar roller races, perhaps even group trips to the
BEAM
> >Games or workshops. Now if I can only get this thing started...
> >
> >-Brien the TurtleTek
>
>
> ...............And I thought I was the only physics GEEK
> here.......
>
>

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