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Subject: 
RE: pwering the NXT
Newsgroups: 
lugnet.robotics
Date: 
Tue, 10 Jan 2006 03:46:46 GMT
Original-From: 
Sattler Chris-QA1406 <christopher.sattler@motorola.STOPSPAMMERScom>
Viewed: 
1587 times
  
The Q&A for FLL coaches says it comes with a rechargeable battery
system. I think I heard that it was Lithium-Ion in the shape of 6 AAs,
but you can use regular AAs. Whether it comes with a rechargeable
battery system might depend on which system you buy. There is to be a
retail version and an educational version.

Chris

-----Original Message-----
From: news-gateway@lugnet.com [mailto:news-gateway@lugnet.com] On Behalf
Of Chris Magno
Sent: Monday, January 09, 2006 7:00 PM
To: lego-robotics@crynwr.com
Subject: Re: pwering the NXT

danny staple wrote:
On 08/01/06, Chris Magno <cmagno@rogers.com> wrote:

Brian Davis wrote:
We dont know if it was taken out due to cost, OR due to the number of
problems it had caused there customer service dept.


I recall several posts from people claiming to have fried there units
because they had plugged some non-acceptable power source into the • rcx.


There is soemthing about that seems very, very likely. What they could

do is a moulded, polarised connector, something that is their own, but

not too hard for a real tinkerer to copy if they wanted to, and make
sure the spec is well known. That way, those who have tinkered and
broken it have gone out on enough of a limb that they are aware of the

possible risk.

I like the idea of the possibility that the NXT could be powered
through the USB port. I dont know that it is, but that really would be

a great feature. A feature which a hacker might also be able to use to

supply power via batteries if need be. I have a USB spec book
somewhere - I will have to check, I know that it has something about
the initial host supplying low current until negotiation has occured,
and then allowing higher current draw.
--
Danny Staple MBCS
OrionRobots
http://orionrobots.co.uk
(Full contact details available through website)

Oddly enough, have you seen this:


http://www.firstlegoleague.org/default.aspx?pid=21400


Half way down it says that the NXT will have a:

          Rechargeable battery system

Will the "battery system" be a preshrunk battery pack with some
connector on it to plug into the NXT?  Could a hacker then find that
plug and plug a wal wart INTO the nxt?

Chris

YA, and while I'm wishing, maybe I can get  the NXT to generate next
weeks lotto numbers.



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