Subject:
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Re: Sensor port cross talk
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Newsgroups:
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lugnet.robotics.rcx.java
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Date:
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Thu, 1 Aug 2002 17:48:39 GMT
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Viewed:
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4585 times
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In lugnet.robotics.rcx.java, John Barnes writes:
> ...SNIP...
> JB
>
> In lugnet.robotics.rcx, Roger Glassey writes:
> > ... SNIP...
> > This caused a problem because I was using port 1 to multiplex several touch
> > sensors, so S1 was in raw mode. A light sensor was connected to port 2 but
> > was not activated. The SensorListener monitoring S1 suffered repeated
> > calls to its stateChanged() method before any touch sensor was bumped.
> > ... SNIP...
> > Roger
Yes. I avoid using raw mode whenever possible because of the background
fluctuations I see in sensor values. These could quite easily swamp the VM
making the robot appear unresponsive. Whereever possible I use percentage
values if I need continuous readings.
- Paul.
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Message is in Reply To:
 | | Re: Sensor port cross talk
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| This is certainly a known defect in the input circuitry in the RCX. I know nothing about other kernels apart from the standard Lego one (via NQC) but the results of my examining the problem indicated that the ports are scanned in reverse order, 3 - (...) (22 years ago, 1-Aug-02, to lugnet.robotics.rcx.java)
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