Subject:
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Re: Two NXT Back2Back
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Tue, 7 Aug 2007 13:09:12 GMT
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Viewed:
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21782 times
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In lugnet.robotics.nxt, Pavel Petrovic wrote:
> > can direct connection of two NXTs (port4) with normal Lego-cables damage any
> > parts or drivers ?
>
> I do not see how you could burn any parts or drivers. Even if both ports
> would be in active sensor mode and (obviously) out-of sync, the electronics that
> connects the port to ADC should handle that as normally the same pin
> is used to power up the sensor, which may be disconnected.
>
> Also LEGO would probably put different connectors at the two ends of the cable,
> if one could easily burn the brick by connecting two sensor ports (even motors
> supposedly have thermal protection when the current is too high - Philo says at
> his page that the motors can drive up to 2A
> (http://www.philohome.com/motors/motorcomp.htm), but the drivers handle only up
> to 1A (Mindstorms HDK), but I would not try too much...and do not quote me
> please if you burn your NXT...)
>
> > p.s.: pbLua works fine with bitrates from 9k6 to 921k
>
> Wow. Are there also some devices that connect to the fast port already available
> or coming?
ReHi,
I'm building an external SD-Card-Interface for storing data, using RS485...
NXT-->RS485-->AtMega48-->SPI-->SD
Next project is AVRCAM via RS485 :D
Thanks for your response
Bye
Christian
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Message is in Reply To:
 | | Re: Two NXT Back2Back
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| (...) I do not see how you could burn any parts or drivers. Even if both ports would be in active sensor mode and (obviously) out-of sync, the electronics that connects the port to ADC should handle that as normally the same pin is used to power up (...) (17 years ago, 7-Aug-07, to lugnet.robotics.nxt)
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