Subject:
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Re: ReMix of LEGO NXT Starter Robot
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Mon, 15 Jan 2007 22:14:02 GMT
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Viewed:
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11602 times
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In lugnet.robotics.nxt, Juergen Stuber wrote:
> Hi Chris,
>
> "Chris Phillips" <drvegetable@comcast.net> writes:
> >
> > It would seem that the motors are controlled using digital
> > command packets sent over an I2C interface, and the actual
> > motor control waveforms are generated internally to the
> > servo motor unit itself.
>
> that is not quite right, there is an ATMEGA48 microcontroller
> insider the NXT Brick which generates the waveforms.
> It is connected to the main processor via an I2C-style interface.
>
> Besides that it also controls power to the NXT, legacy sensors
> and firmware reset.
Ah, thanks for the correction. I've only studied portions of the hardware docs
so far, mostly regarding the sensor ports. I realized after I posted that I
hadn't completely checked my facts. (I hate when that happens!)
So does this mean that the motor multiplexer that LEGO has hinted about would
have to be connected to a sensor port? Or is there some way to reconfigure the
ATMEGA micro to pass the I2C through to a motor port?
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Message has 1 Reply:
Message is in Reply To:
 | | Re: ReMix of LEGO NXT Starter Robot
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| Hi Chris, (...) that is not quite right, there is an ATMEGA48 microcontroller insider the NXT Brick which generates the waveforms. It is connected to the main processor via an I2C-style interface. Besides that it also controls power to the NXT, (...) (18 years ago, 15-Jan-07, to lugnet.robotics.nxt)
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