Subject:
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Re: Touch Sensor as a Switch
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 27 Aug 1999 18:55:01 GMT
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Viewed:
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1034 times
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In lugnet.robotics, lego-robotics@crynwr.com (Tilman Sporkert) writes:
> You can't reasonably wire Lego 9V components in series. Even then,
> the resitor values are too close together to produce reliable readings.
Connecting N touch sensors in parallel requires N pieces of wire, while doing
so in series requires N+1 pieces of wire. See? It's not that bad.
Here is my experimenting results of connecting the three Cyber Master touch
sensors to RCX in series: (disregarding bouncing)
yellow red white percent
0 0 0 34%
1 0 0 43%
0 1 0 45%
0 0 1 50%
1 1 0 62%
1 0 1 71%
0 1 1 77%
1 1 1 100%
The values produced by the yellow and the red sensors are dangerously close.
Otherwise it seems ok to me. I get exactly the same readings everytime. I
don't know if battery power or a different RCX will affect the readings.
Cheers,
Hao-yang Wang
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Message is in Reply To:
 | | RE: Touch Sensor as a Switch
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| In response to my own post on the Cybermaster touch sensors: The three different Cybermaster touch sensors have a resistance of 15k, 12k, and 10k when not pressed. The rest of my ramblings were pure fiction. The three Cybermaster inputs are (...) (25 years ago, 26-Aug-99, to lugnet.robotics)
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