Subject:
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Re: motors are stuck...
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sun, 17 Mar 2002 19:23:13 GMT
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Viewed:
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1693 times
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just give Lego a call at 1-800-363-2140
they'll have the new stuff in the mail the next day.
you don't need to send in the broken parts either
...although for the sake of all Lego enthusiasts please don't take advantage
of that.
good luck
"Jeremy Clark" <jerclark@sonic.net> wrote in message
news:Gt4tJ3.2L4@lugnet.com...
> Thanks for the follow-ups.
>
> Well, he's still a "friend" - after all he did give me the stuff for free
> and with no guarantees that it would work. I guess it'll just be a chance • to
> crack open one of these babies!
>
> I think the stuff is pretty old, and I'm quite sure there's no easily
> accessible paper trail as to it origins, etc. I'll crack one open for fun,
> then maybe I'll send the others back, but I don't know if that will fly.
>
> If I find anything out I'll clue you all in!!
>
> Thanks-
> Jeremy
>
> ============
>
>
> In lugnet.robotics.rcx.legos, Andy Gombos writes:
> > You may also be able to return them to Lego for free and get • replacements,
> > it depends on how old they are. I would try before you have to buy a new
> > motor, they aren't the cheapest.
> >
> > Andy
> > ----- Original Message -----
> > From: "Benton Jackson" <goatrider@spambegone.goatrider.com>
> > To: <lugnet.robotics.rcx.legos@lugnet.com>
> > Sent: Sunday, March 17, 2002 8:47 AM
> > Subject: Re: motors are stuck...
> >
> >
> > > Jeremy,
> > >
> > > The motors that come with Mindstorms are geared internally, and it's
> > > probably jammed gears that are causing you woes. Your "friend" gave you • some
> > > broken motors. I've never taken one apart-- it snaps together in a way • that
> > > looks easy to break when you take it apart. So, now is your chance to • see
> > > the inside of one- they are already broken, so the worst that can • happen
> > is
> > > you break it more. In the best case, you might see how its jammed and • can
> > > fix it. You've got 3 tries.
> > >
> > > The only input that a motor takes is voltage of one way or the other. A
> > > motor can also act as a generator, so to "lock" a motor the RCX shorts • it
> > > out, turning it into a brake. But this goes away once you turn the RCX • off
> > > or disconnect it.
> > >
> > > You don't even need an RCX to run a Lego motor. They can also run off • of a
> > > straight battery box. Lego sells two different kinds, a white one with
> > > forward and reverse buttons, and the other with a push button that can • be
> > > operated by lego mechanisms. I sometimes use one of them to test my
> > > mechanisms before hooking up and programming and RCX.
> > >
> > > -Benton
> > > Lugnet #1514
> > > http://www.goatrider.com/lego/lego.html
> > >
> > > In lugnet.robotics.rcx.legos, Jeremy Clark writes:
> > > > I recently inherited an RCX 1.0, a serial IR tower and a few motors • from
> > a
> > > > gracious friend. After many headaches, I finally got legOS 0.2.5 • running
> > on
> > > > RH 7.1 and am able to compile and DL programs to the RCX. There is one • odd
> > > > thing, however - of the four motors that my friend gave me, three of • them
> > > > appear to be completely locked. Not only does the "motor_X_dir(dir)" • command
> > > > not make them spin, they are completely resistant to rotation even by • hand.
> > > > The fourth motor spins freely by hand, and responds properly to the • motor
> > > > control calls in legOS.
> > > >
> > > > Is it possible that the motors were last used with an RCX running the • lego
> > > > firmware or some other OS, and that some lock command, like "off" in • NQC,
> > > > was sent to the motor, and now there is no legOS call that will unlock • it?
> > > > It just seems weird that they don't move at all.
> > > >
> > > > I tried sending motor_X_dir(off) to the motor, but that didn't help.
> > > >
> > > > Any thoughts?
> > > >
> > > > Thanks-
> > > > Jeremy Clark
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Message is in Reply To:
 | | Re: motors are stuck...
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| Thanks for the follow-ups. Well, he's still a "friend" - after all he did give me the stuff for free and with no guarantees that it would work. I guess it'll just be a chance to crack open one of these babies! I think the stuff is pretty old, and (...) (23 years ago, 17-Mar-02, to lugnet.robotics.rcx.legos)
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