Subject:
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Re: Basement water alarm
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 3 Feb 2000 03:56:34 GMT
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Original-From:
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Russell Nelson <nelson@crynwrANTISPAM.com>
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Viewed:
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1667 times
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Brian B. Alano writes:
>
> > 2. The RCX clock seems to lose time, roughly
> > (very roughly) a half hour per week. Anyone
> > else noticed this?
> >
> >
> PC clocks tend to lose time as well. 10 minutes a day isn't unheard of.
> 1/2 hour per week is better than I expected: 99.7% accurate. On the
> other hand, my $15 alarm clock keeps good time. Why the difference?
Because your alarm clock is counting 60Hz cycles. The power company
keeps the number of 60Hz cycles to precisely 60Hz over the long run.
If you want your PC clock to be accurate, run Dan Bernstein's
clockspeed package (http://cr.yp.to/clockspeed.html). First, install
Linux....
--
-russ nelson <sig@russnelson.com> http://russnelson.com
Crynwr sells support for free software | PGPok | "Ask not what your country
521 Pleasant Valley Rd. | +1 315 268 1925 voice | can force other people to
Potsdam, NY 13676-3213 | +1 315 268 9201 FAX | do for you..." -Perry M.
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Message is in Reply To:
 | | Basement water alarm
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| Hi everyone, I made my first practical Mindstorms invention a couple of weeks ago. It's a water sensor for my basement. There's a water pump on the side of my furnace that takes condensed water and spits it out the back of my house. In very cold (...) (25 years ago, 2-Feb-00, to lugnet.robotics)
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