Subject:
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Re: parallel RCX outputs
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Sun, 23 Jul 2006 19:14:19 GMT
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Viewed:
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10664 times
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Hi Mark,
"Mark Bellis" <mark.bellis@tiscali.co.uk> writes:
> In lugnet.robotics.rcx, Juergen Stuber wrote:
> > Chris Magno <cmagno@rogers.com> writes:
> >
> > > Can I put an electric 2x4 plate across output port A and B
> > > to increase the current I can draw from the brick?
> >
> > I think so (warning, this is based only on theoretical knowledge).
> >
> > > 1. when I ran a few tests with a 1x2 lamp, I would get interesting results.
> > >
> > > A and B forward - ON
> > > A and B Reverse - ON
> >
> > That should be ok.
> >
> > Setting the power level might not work correctly,
> > from looking at the ROM code it seems the PWM waveforms
> > are not synchronized.
>
> If all motor ports are started and stopped together, does that synchronise the
> PWM waveforms?
probably, I guess they would be started within the same millisecond,
which would result in synchronized wafeforms.
> If not, then I don't recommend paralleling up.
It's not that bad, when the waveform is off the motor is floating.
So the power control will be ineffective at worst.
Jürgen
--
Jürgen Stuber <juergen@jstuber.net>
http://www.jstuber.net/
gnupg key fingerprint = 2767 CA3C 5680 58BA 9A91 23D9 BED6 9A7A AF9E 68B4
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Message is in Reply To:
 | | Re: parallel RCX outputs
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| (...) If all motor ports are started and stopped together, does that synchronise the PWM waveforms? If not, then I don't recommend paralleling up. If so, then I recommend paralleling up only when motors are started and stopped together and are run (...) (18 years ago, 23-Jul-06, to lugnet.robotics.rcx)
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