Subject:
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Re: Sensor monitoring
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 22 Jan 1999 18:41:30 GMT
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Viewed:
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1063 times
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I'm new here and don't have much experience yet with the RCX, but I was
just wondering... Is it possible to attach both sensors to a single input
using one of the multi-input multiplexers (voltage divider arrangements) that
I've read about on here? If so, you could read both sensors at precisely the
same time by reading a single input port and then examine the value seen to
determine which sensor was activated.
Mark Dollar
lego-robotics@crynwr.com (Bible, Bryan) writes:
> I have a project that I am building, it is a finish line monitor for a
> pinewood derby track. What I am doing is putting two light sensors above the
> track pointing down so the ambient light will change when the car crosses
> the finish line. One sensor for each track. I am using NQC to monitor the
> sensors, so my question is can I monitor both the sensors in parallel so
> neither one has an advantage? Which ever sensor changes first then it will
> flag that lane as the winner.
>
> Any ideas?
>
> Thanks,
>
> Bryan Bible ---
> __o --- __o
> Tandem Computers --- _ \<,_
> --- _ \<,_
> Austin Texas --- (*) /
> (*) --- (*) / (*)
> bryan.bible@compaq.com
>
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Re: Sensor monitoring
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| (...) You can multiplex simple switchs that way, but not the light sensor. I requires power and outputs an analog value. (25 years ago, 22-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | Sensor monitoring
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| I have a project that I am building, it is a finish line monitor for a pinewood derby track. What I am doing is putting two light sensors above the track pointing down so the ambient light will change when the car crosses the finish line. One sensor (...) (25 years ago, 20-Jan-99, to lugnet.robotics)
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