Subject:
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Re: Solar panels, capacitor
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 13 Sep 2001 19:59:49 GMT
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Viewed:
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2253 times
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Thanks for your response, but it really didn't address my questions.
1. How are these things supposed to be connected to an RCX?
2. Assuming that I could get power to it, would the RCX run with a solar
panel (300ma) if I didn't connect any motors?
I just don't understand how these can appear on the Mindstorms page and yet
there is no way to use them with Mindstorms. You would need a switch at
least, but they don't sell that anymore.
--Jack Gregory
Rich Thompson <rich@robotthoughts.com> wrote in message
news:GJKxoH.1Dn@lugnet.com...
> There is hardly enough current to move a motor. You would need about 9-11
> Solar Panels and a bright sunny day to power the RCX. My only attempt at
> working with this solar panel can be seen here:
>
> http://www.robotthoughts.com/article.php?sid=26
>
> Rich Thompson
> http://www.robotthoughts.com
>
> In lugnet.robotics, Jack Gregory writes:
> > In the latest SAH catalog (Fall 2001, rec'd today in Massachusetts), in • the
> > Mindstorms section, there are two "new" parts. One is a solar panel, and
> > the other is a capacitor.
> >
> > I know these are former/current Dacta items. The page also says to go to
> > www.lego.com/dacta for "more information on how to use energy in your
> > creations" (or something like that, I am paraphrasing).
> >
> > But I can't find anything there on this subject, especially about these
> > parts.
> >
> > So, can these really be used in any way? Can the RCX be powered by • either
> > for even a brief or partial time? For example, could I use them for • running
> > the RCX and sensors, but not motors? I can't believe there is even • enough
> > current from either to do much with motors.
> >
> > And the worst thing: how are you supposed to use these things? It seems
> > like a terribly uncoordinated thing for LEGO to do to sell these. Both
> > units appear to have the standard 2x2 connector plate area, but I am not
> > aware of a way to get that into an RCX. Or am I missing something?
> >
> > --Jack Gregory
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Message has 2 Replies:
 | | Re: Solar panels, capacitor
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| I have not run a RCX with the Solar Cells. I would think you would require three cells and three capacitors connected in series to provide 7.5 volts to the RCX. This would require making an adapter from the wire brick to the power input of the RCX. (...) (25 years ago, 13-Sep-01, to lugnet.robotics)
| | | Re: Solar panels, capacitor
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| (...) I have the same thoughts. You can't use them together. Power output/requirements don't match. You could have an RCX driven vehicle pulling a trailer that has a solar-cell and capacitor supplying power to a device that is switched on from (...) (25 years ago, 14-Sep-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: Solar panels, capacitor
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| There is hardly enough current to move a motor. You would need about 9-11 Solar Panels and a bright sunny day to power the RCX. My only attempt at working with this solar panel can be seen here: (...) (25 years ago, 13-Sep-01, to lugnet.robotics)
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