Alt-BEAM Archive

Message #13388



To: beam@sgiblab.sgi.com
From: BUDSCOTT@aol.com
Date: Thu, 13 Apr 2000 13:56:07 EDT
Subject: Re: Web Page...


www.botic.com, let me reiterate, www.botic.com, its free for cryin out loud, Yes i know others are free, but this is for robotics sites only!

-Spencer

wrote this at school, no cool signature :(



13389 Thu, 13 Apr 2000 11:35:14 -0700 Re: Core-less walker beam@sgiblab.sgi.com Bruce Robinson Hi, Ben.

Now isn't that an elegent circuit? It's just too bad you have to mess it
up with motor drivers.

How much current do those motors draw, anyway? The reason I ask is, you
could pair up the inverters, and even THAT can be done elegently. Three
inverters down each side of the chip, so just tie the inputs and outputs
across the chip. That's something even I could freeform.

The 'HC chip is rated at 25mA max per inverter, with a total chip input
rating of 50 mA. As you're only running one motor at a time, pairing up
the inverters would give you 50mA to drive the motors.

Now wouldn't it be nice if you could do that? Two servos, one chip, and
a decoupling capacitor (which you might not even need).

Bruce



13390 Thu, 13 Apr 2000 15:39:58 -0400 cool stuff "Wyzyrd1" check out http://wwwgatewayelex.com/ and/or their paper ad in "Nuts and
Volts" magazine - $1.95 pager motors, and "Spinney the wind-up Critter" for
$8.50 - a
1-motor (wind-up) 4-legged walker .. anyone else getting ideas? :)

Wyzyrd
<:)}

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