Alt-BEAM Archive

Message #07437



To: alt-beam@egroups.com
From: "Steve M" mr_squishee@hotmail.com
Date: Sat, 30 Oct 1999 20:36:42 GMT
Subject: [alt-beam] Head circuit


Hi,
I haven't had a lot of time on my hands recently so I should've posted this
ages ago. Where can I find the head circuit? I remember there was one page
but I lost the link, and now I can't find it again. I still want to build
the head but like I said I can't find the circuit.
Thanks in advance,
Steve
P.S. Anyone built any mouse bots recently? I'm about 70% through
construction of mine and I'm just uncertain about at what place/angle to
drill holes for motor shafts. Any tips?

______________________________________________________



7438 Sun, 07 Nov 1999 23:00:37 +1100 [alt-beam] Re:"mag" bot idea beam@corp.sgi.com "Ben Hitchcock" Hi,

I think it might be easier if you use a spring to force the broom to one
side. This is because you are going to need a hefty whack of current to
overpower that magnet - the magnet is very close to the broom, when the
broom is over to the left.

I'd use a spring instead.

You could always use a meter movement - those things inside analog
multimeters, or light meters, or anything with a needle that indicates
something. I used these meters in my dragonfly robots:

http://wollongong.apana.org.au/~ben/dragon/

This would save you from winding your own coil. These things aren't that
strong, however. It might be good enough if you put a feather on it,
though! An animated feather duster!

Ben

----------
>From: "Jim Cook"
>I have an idea for a magbot Carbot/ Cleaner bot. But need help.
>
>The idea is as fallows; your standard 1381 SE, with a coil as the base of
>the bot, an Iron (paperclip, or small bar) armature pivots freely from the=

>center of the bot (with a small brush or flag attached), but is pulled to
>the left by a magnet. What I want is when the SE trips, the coil over powe=
rs
>the magnet, and pulls the armature to the right, hence sweeping.
>
>The first bot tail to go with all those heads, huh?
>
>But what I want to know is what pole should the magnet be in relation to t=
he
>coil, N-S? Or N-N? I=92m not sure.
>
>And who do you measure electromagnetic fields? So I know how big to make t=
he
>coil.
>
>Attached is a bad .GIF drawing of what I=92m thinking=85
>
>
>Sincerely,
> Jim Cook
>beamboter@hotmail.com
>http://www.geocities.com/Area51/Nebula/9874
>
>
>
>
>______________________________________________________
>
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