Alt-BEAM Archive
Message #01664
To: beam@corp.sgi.com
From: "Chris Daniel" popjester@hotmail.com
Date: Sun, 21 Mar 1999 17:13:01 PST
Subject: [alt-beam] Re: walker process probs....
What is a PNC? I think I had the exact same problem when I tried to make
my last microcore, which still doesn't work! With the LEDs there are
always two on at the same time when motors are attached, but without
motors (just the LEDs) I can get the circuit it work (it's supposed to
look like four "chaser" lights right? - 1, 2, 3, 4, 1, 2...)
Chris
\
>yes, i understand your situation, it happend to me a few months ago...
>normal though, ... anyways,
>
>1. do u have a PNC in your uCore?
>
>2. Do u have a pnc that has a time constant too short? -- i tend to
use
>something like a 1meg resistor and 10 uF cap, that way its real long
and
>kills everything. then releases 1 pulse
>
>3. yes that thing when both motors move at same time is the saturated
>state, it does not seem useful really for a two motor walker, because
one
>leg pushes forward and the other pushes backwards,,, not very
>productive.. so u need to use a pnc and then see if anything happens..
>good luck
>
>jonathan wolter
>
>
>>Maybe you guys could help me out. I've breadboarded a 'miller-style
>>walker', but am having some problems controlling the microcore. If
>>I
>>disconnect the 74HC245 motor driver, I can get the microcore to
>>produce the
>>results I'm looking for. I can cycle through the processes properly,
>>and
>>add or subtract processes from the loop, but as soon as I add the
>>motor
>>driver, it goes into its 'saturated' state. My walker does achieve
>>forward
>>motion, but it does it by rotating the front motor clockwise and the
>>rear
>>counter clockwise at the same time and visa versa. As I understand
>>it, it
>>should move the front motor clockwise, then the back counterclockwise,
>>then
>>the front counter, with one motion coming after the other. Is this
>>normal?
>>Should it be moving two motors at the same time???
>>
>>Any advice would be appreciated.
>>
>>Thanks boyz...
>>
>
>---------------------------------------------------
>Jonathan Wolter
>NE. IN, USA
>email.... j.cobbs@juno.com ICQ: 27102252 talk to
me!!!
> please
>aol instant messanger: jcobbers
>
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