Alt-BEAM Archive
Message #06466
To: beam@sgiblab.sgi.com
From: Sean Rigter rigter@cafe.net
Date: Thu, 07 Oct 1999 07:14:31 -0700
Subject: [alt-beam] Re: microcore with PNC
No problem,
just wanted to show you that whatever resources you have there are always novel
solutions other than the "standard" designs. BTW the LSuCore does not need any
resistors, anyone guess why?
regards
wilf
Galeri Soemardja wrote:
> oops... sorry, I mean, I used 74HC's series for all of the circuit, not the
> 74LS's series nor th eplain one ... sorry, I'm not mention it correctly...
>
> I used a circuit from zoelen Z-walker ( with servos) and also have tried
> Yuan's 2 motors circuitry... ( It's the standard microcore and PNC, right ?)
>
> but, thank anyway for the reply...
>
> And one more think, what kind of capasitor that used on PNC (2.2 uF) ?
>
> thx,
> Ivan
>
> ----- Original Message -----
> From: Wilf Rigter
> To:
> Sent: Thursday, October 07, 1999 6:36 AM
> Subject: RE: microcore with PNC
>
> > 74LSTTL won't work with standard microcore circuit components but if that
> is
> > all you have and want to get your feet wet then try this untested but
> > "should work" LS uCORE with build-in autoPNC:
> >
> > <>
> >
> > good luck
> >
> > Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
> >
> > > -----Original Message-----
> > > From: Sathe Dilip [SMTP:sathe_dilip@bah.com]
> > > Sent: Wednesday, October 06, 1999 12:12 PM
> > > To: beam@sgiblab.sgi.com
> > > Subject: Re: microcore with PNC
> > >
> > > If you are really using the standard TTL series (Plain 74), you have to
> > > use between 4.75 & 5.25 volts supply to reliably operate the circuitry.
> > > Even for CMOS 2.8 is kind of on the lower edge.
> > >
> > > Dilip
> > >
> > > "Ivan W. Sjafarij" wrote:
> > >
> > > > standard 4 Nv microcore ( 7414) with ( 'auto' ? ) PNC...
> > > SNIP
> > > > perfectly. What is wrong ? I have tried both the 74139 or 74245
> motor
> > > > driver and I've got same result... I've also tried to built the
> > > microcore
> > > SNIP
> > > > current from the power supply? I used two aaa size batery ( about 2,8
> > > v)..
> > > SNIP
> > > --
> > > Pl. remove *s from the e-mail address to reply
> >
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