Alt-BEAM Archive

Message #00818



To: beam beam@corp.sgi.com
From: Richard Piotter richfile@rconnect.com
Date: Mon, 22 Feb 1999 20:40:52 -0600
Subject: [alt-beam] Re: nesting microcores to drive steppers


I'm sure that's possible. The simplest thing is to use a fixed capacitor value
and just decrease the resistance. Easier to work with if you ask me. Capacitor
change also will work fine though. Sounds like the microcore Spyder to me. One
central microcore triggering 4 Nv chains, and each chain opperating an
individual leg of 2 motors (I think). I am not sure if I'll build a 4 legged
Spyder type robot, or work on my 78 neuron cockroach. I'll start with the 36
neuron body for starters and add the head later.

Evan Dudzik wrote:
>
> couldn't you nest microcores to drive steppers?
> example... have a master microcore drive another , with a microcore
> instead of a motor. the master microcore would pulse the smaller ones
> (one per motor) for a longer time while the smaller ones would pulse
> the poles of the motor rapidly... would you just use smaller caps???
> would it work at all??? because even geared steppers are pretty cheap.
> i dunno...


Richard Piotter
richfile@rconnect.com

The Richfiles Robotics & TI web page:
http://members.xoom.com/richfiles

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