Alt-BEAM Archive

Message #00792



To: George Rix rix.g@bmts.com
From: "Sathe Dilip" sathe_dilip@bah.com
Date: Mon, 22 Feb 1999 16:33:45 -0500
Subject: [alt-beam] Re:


George Rix wrote:
>
> Okay, I was just reading the BEAM tek page at the bottom where the ideas and
> hints were stated. Then I saw the one talking about using an electromagnet
> to produce motion (like Magbot does). So, I figured that if you took a SE
> and hooked up a coil to it, mounted on the back mind you, and then took two
> strips of aluminum and bent 'em slightly...okay, this is doing no good. I'll
> ASCII it:
> ____
> / \
> / \
> _| |
> || ------
> || |||||||||
> || |||||||||
> || |||||||||
> || ------
> -
>
> The bit to the left is a steel plate, the arcing bit is the aluminum strips
> and the really stripey bit is the electromagnet. This would work like one of
> those electric bells, or a relay, because when the e-magnet turns on, the
> steel plate smashes into it. That would give the bot a literal "kick", and
> would knock it forwards a bit. Then the e-magnet would turn off, and the
> steel plate would snap back. You might even be able to make a photovore with

This sounds suspiciously like the donkey and carrot scheme :-). When
the magnet and the strip are both part of and supported by the same
structure, the action & reaction being equal (& opposite), the bot is
not going anywhere. To take advantage of the kick as you call it, the
bot will have to have different coeff. of friction in forward & reverse
direction.

Dilip
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