Subject:
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Re: Surveying MTBF of Edu NXTs
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Fri, 23 Feb 2007 21:58:17 GMT
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Viewed:
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13947 times
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gypsy_fly wrote:
> By comparison, 1 of the 25E NXTs is now dead after less than 10 minutes of
> run-time. Another is showing signs of senility out of the box. I suspect that
> NXT will die soon.
Hi Fly,
I suspect that your NXTs are fine. On the other hand, I suspect your
rechargeables are toast; there is a big difference between those two
things. An underpowered NXT will behave erratically, and therefore, as
the battery looses its ability to hold a charge, it will (as you say,
"out of the box") behave poorly.
So, like others, I'd like to hear more; we're considering making a
purchase of several of the NXTs, and it would be nice to know whether
you're actually seeing a failure of educational NXTs (which, to be
honest, doesn't make a lot of sense to me), or if you're seeing a
degradation of the rechargeable batteries (which strikes me as more
likely). For example, do you have an NXT that dies rapidly regardless of
what battery pack it is plugged into? What if you run it on AAs---does
it still "die" in minutes? If so, has it always behaved that way, or did
someone play football with it?
Those are, I suppose, some of the questions I'm curious about.
Cheers,
Matt
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Message is in Reply To:
 | | Surveying MTBF of Edu NXTs
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| I have 11 commercial (C) and 25 educational (E) NXT sets. The 11Cs are doing fine after about 4 battery changes. They have been in use since July 2006 for about 60 class hours. I'm sure there's a more empirical way to calculate how much run-time 4 (...) (18 years ago, 23-Feb-07, to lugnet.robotics.nxt)
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