Subject:
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Re: Power Usage of RCX
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 12 Aug 1999 00:51:06 GMT
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Viewed:
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474 times
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James Pritchard <lego-robotics@crynwr.com> wrote in message
news:01BEE41B.A7DED0C0.pritchard.james@virgin.net...
> I was astonished to find that when the RCX is just on (NOT running a task)
> with the light sensor, both switches, and both motors connected that the
> Battery voltage drops very quickly. 12 mV a second or more. Is this to be
> expected.
0.012V/second would be 0.72V/minute at that rate you would be to 0v in 12
minutes. My RCX runs for several hours on a set of new alkaline batteries.
What type of batteries are you using?
> Is the RCX watch sposed to reset to 00:00 after turning on and off (red
> button)?
That is what mine does. It reads mission time not absolute time.
> I've also noticed that when a touch/switch is activated on port 3, a
> increase of 2% occurs on the reflection/light sensor on port 2. Is this
> leakage?
I don't see anything like this with my RCX. It does make sense that the
light reading would go up if the voltage went down, but the light sensor has
a pretty complex circuit to compensate for this kind of thing.
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Message is in Reply To:
 | | Power Usage of RCX
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| I was astonished to find that when the RCX is just on (NOT running a task) with the light sensor, both switches, and both motors connected that the Battery voltage drops very quickly. 12 mV a second or more. Is this to be expected. Is the RCX watch (...) (25 years ago, 11-Aug-99, to lugnet.robotics)
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