Subject:
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Re: sensor input mux calculations
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 30 Dec 1998 01:52:35 GMT
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Viewed:
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1404 times
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The lego touch sensors are not simple on/off switches like you guys show.
There is at least 500 ohms in series with them when they are closed. They
also seem to be slightly touch sensitive. A light touch will read 1.5K while
a hard push is close to 500. It is hard to get more than 4 touch switches
with either series or parallel resistors.
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Message is in Reply To:
 | | Re: sensor input mux calculations
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| (...) Thanks, I didn't think of that. Since it is a linear function to convert the measured resistance to the switch values, this is much faster and also has better spacing between the values. Using 300, 600, 1.2k, 2.4k, and 4.8k ohm resistors, you (...) (26 years ago, 29-Dec-98, to lugnet.robotics)
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