Subject:
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Re: mindstorms NXT
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 8 Jan 2006 21:41:53 GMT
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Viewed:
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7697 times
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In lugnet.robotics, dan miller <danbmil99@yahoo.com> wrote:
> --- Titus Gabriel Petrut <gpetrut@yahoo.com> wrote:
> >
> > I just saw Lego's definiton of a servo motor. It resembles a industry
> > servo, not
> > a hobby servo. In the hobby servo, the closed loop is done in the servo
> > electronics, but in the industry servo, the closed loop is done in the
> > controller. However, a digital bus would require that some "brain" to be
> > installed in the servos (like it is in the sensors). Also looking at the
> > specs
> > for the NXT brick, one can see there are 2 controllers. A 32 bit ARM7 and
> > a 8
> > bit controller. The latter one is probably the motor control unit.
>
> This all makes some sense, though it seems strange to put a digital board in
> the servos, but not do the control there.
>
> In any case, I think my first project will be to figure out how to use the
> USB port to connect the NXT to a more powerful brain, like my iPaq. I know,
> slave2slave USB is a nono; but I've heard that some low-level hacking can
> turn USB ports into something closer to dumb, point-to-point connections
> (completely non-USB compatible).
>
> Another option would be bluetooth -- in fact that might be much more
> elegant. Obviously in some cases, the computer could be ground-based, but I
> like the iPaq idea because you can get flash-card cameras.
>
> Just daydreaming here...
I was wondering if one could make a two port host device with its own power
source (battries). It could be relatively simple, where one host port polls the
device port of the NXT to find out if there is anything to do, and then the
second host port would drive that to devices that the NXT can use.
Just daydreaming here too.
Kev
>
>
>
> __________________________________________
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Message has 1 Reply:
 | | Re: mindstorms NXT
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| (...) So you are saying you have a sort of mini-host acting as a bridge between connected devices like a NXT and something else. That sounds like an interesting idea ..... I think one of the reasons why hosts are tricky and devices are easier is (...) (19 years ago, 8-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | Re: mindstorms NXT
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| (...) This all makes some sense, though it seems strange to put a digital board in the servos, but not do the control there. In any case, I think my first project will be to figure out how to use the USB port to connect the NXT to a more powerful (...) (19 years ago, 8-Jan-06, to lugnet.robotics)
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