Subject:
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Re: Mini Rebound RC
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 26 Mar 1997 22:11:06 GMT
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Original-From:
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Ken McHugh <mchughk@idirect.comNOSPAM>
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Viewed:
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1637 times
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At 03:45 PM 3/26/97 -0600, you wrote:
> check out www.robotstore.com and look under kits. There are gear kits and
> a bulldozer kit that I used two of for a robot. It is not too fast and it
> pulls a big load, doesn't pull much current (small motors). You might also
> try the manufacturers page at www.tamiya.com or something like that. They
> make lots of stuff.
>
> jm
Just because the motors are small dosn't mean they don't pull a big load.
Both Adam Cox and myself have been working with the bulldozer kit (from the
robot store) and have found they really heat up the motor driver chips (TI
SN754410NE). We do not any specs on the motors in the kit, but beleive they
are 3V, anyone planning on using this kit should be careful about cooking
the motor driver chips.
Some solutions :
1. Piggyback the motor driver chips, this increases the current handling
capabilities.
2. Use additional diodes between the motor port and the motor. We are
using six diodes, three in series in one direction paralelled with three
in series in the other direction. This takes some of the abuse of the
motor driver chips.
3. Use an external (separate) power source with a lower voltage.
> On Tue, 25 Mar 1997, victor w clark wrote:
>
> > I have seen alot of talk in the mail archives on converting RC cars
> > (motors) and the jist i get is that they just draw two much current and
> > are to fast.
> >
> > There is a smaller version of the Rebound RC car called the Mini rebound
> > has anyone had any luck with this setup. (probably still to fast)
> >
> > Never looked inside one, would there be any chance of lowering the
> > gearing.
> >
> > I cannot decide on a base whether RC car or modified servos.
> >
> > any suggestions.
> >
> > thanks
> > victor
>
>
>
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Message is in Reply To:
 | | Mini Rebound RC
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| I have seen alot of talk in the mail archives on converting RC cars (motors) and the jist i get is that they just draw two much current and are to fast. There is a smaller version of the Rebound RC car called the Mini rebound has anyone had any luck (...) (28 years ago, 26-Mar-97, to lugnet.robotics.handyboard)
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