Subject:
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Re: 6293 rc receiver Auxiliary output possible?
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Newsgroups:
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lugnet.technic, lugnet.robotics
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Date:
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Thu, 15 Apr 2004 16:11:04 GMT
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Viewed:
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2632 times
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thanks for checking Mark! that is more help than i expected. too bad it's
not going to work. guess i'm going to have to buy another receiver from
bricklink if i really want the extra output.
bob
At 10:22 PM 4/14/2004 +0000, you wrote:
> In lugnet.technic, Bob Kojima wrote:
> > i picked up several 8376 Hot flame RC cars at my local radio shack
> > yesterday. (they were on sale for $40) and immediately opened one of the
> > rc receiver units. i have posted pictures in my bricklink
> > directory: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=79385
> >
> > does anyone have pictures of the inside of the 6272 so i can compare it to
> > the 6292? i'm wondering if it is possible to add the auxiliary output to
> > the 6292.
> >
> > what is the missing chip in this picture? an h-bridge of some sort?
> > http://www.brickshelf.com/gallery/bobko/6293/img_5514.jpg
> >
> > should it be the chip in the bottom left corner of this picture?
> > http://www.brickshelf.com/gallery/bobko/6293/img_5518.jpg the chip is
> > marked 1930 306.
> >
> > i'm guessing that the rc controller would need to be modified so that the
> > paddles do not reverse the motors when pressed.
> >
> > i know that it is a far stretch but is it possible that all you would need
> > to do is add the missing chip to add the auxiliary output?
>
> Hi Bob,
>
> I opened two of my receivers, one was from set 8376 Hot Flame and the
> other was
> from set 8475 RC Buggy (I actually purchased this second receiver from
> BrickLink
> just to get the third output).
>
> The first thing I noticed is that the motor control daughter boards differ by
> more than just the missing chip on the Hot Flame version. On the RC Buggy
> board, most of the H-bridge components are on the other side of the board
> (using
> thru-hole components - the Hot Flame using surface mount components for the
> H-bridge).
>
> However, your hunch about the 1930 chip is correct as the RC Buggy has one of
> these chips in the same location as the empty chip pad on the Hot Flame
> version.
> The differences in the boards could be that Lego decided to switch from
> thru-hole to surface mount components at some point and there very well
> could be
> RC Buggy receivers with a daughter board similar to the Hot Flame (but
> with the
> addition of the 1930 chip).
>
> Now for the not so encouraging news: I tested the signals going to the
> daughter
> boards. On the RC Buggy version, the center two pins on the connector are
> controlled by the two paddles on the transmitter - they change between 0V
> and 5V
> as each paddle is pressed. On the Hot Flame version, these pins just
> remain at
> 0V and the pins that control forward/reverse change when the paddles are
> pressed.
>
> So, I'm thinking that if there isn't something simple like a jumper on the
> main
> board to change the paddle behaviour (a slim possibility - and I haven't
> noticed
> it yet myself), there may not be an easy way to add the third output.
>
> Mark
Bob Kojima
ko@fial.com
Fial Incorporated
Telecom Monitoring Solutions
4343 SW Corbett Ave
Portland, OR 97239
503.227.7083
http://www.fial.com
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Message is in Reply To:
 | | 6293 rc receiver Auxiliary output possible?
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| i picked up several 8376 Hot flame RC cars at my local radio shack yesterday. (they were on sale for $40) and immediately opened one of the rc receiver units. i have posted pictures in my bricklink directory: (URL) anyone have pictures of the inside (...) (21 years ago, 14-Apr-04, to lugnet.technic, lugnet.robotics)
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