Subject:
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Re: input used as output
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 9 Dec 2004 04:11:09 GMT
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Original-From:
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dan miller <DANBMIL99@YAHOO.COMavoidspam>
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Viewed:
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1096 times
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well I've decided to go with 2 RCX's anyway. Later I may switch to a non-lego controller ala
handyboard, brainstem, etc.
Anyway, for the record, the current is also pulsed in order to get the reading from the
photoreceptor. I still suspect I could get more juice out of the input, but of course it's a bit
dicey.
Again, anyone know of an actual schematic for the RCX?
ps I tried some stuff with differential gears & brakes, and I also have some dacta thingie which
will reverse the polarity of a contact, but it's all too bulky.
best -nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
--- Philippe Hurbain <philohome@free.fr> wrote:
> > So I'm suspecting that if I get into LegOS internals, I can tweak the low-level code to do
> more.
>
> No, that's an internal limitation of RCX inputs: when configured for active
> sensors, they provide a 14mA current limited supply. This low current is enough
> to light a LED or slowly turn a motor, but don't expect to get any significant
> mechanical power from there.
>
> Have you considered mechanical splitters (such as
> http://www.bricksonthebrain.com/instructions/offsite.cfm?linkID=618) to get two
> actions from one motor ?
>
> Philo
>
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Message is in Reply To:
 | | Re: input used as output
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| (...) No, that's an internal limitation of RCX inputs: when configured for active sensors, they provide a 14mA current limited supply. This low current is enough to light a LED or slowly turn a motor, but don't expect to get any significant (...) (20 years ago, 8-Dec-04, to lugnet.robotics)
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