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Subject: 
Re: multiplexed touch sensors [was: Re ideas for a RIS 2.0]
Newsgroups: 
lugnet.robotics
Date: 
Wed, 25 Aug 1999 22:14:03 GMT
Viewed: 
764 times
  
In lugnet.robotics, Kekoa Proudfoot writes:
[...] Getting back to multiplexed touch sensors, I bet it's possible
to get the Lego touch sensors to work fine with custom firmware and
some sensible and reasonably simple debouncing logic to throw away
readings during transitions. [...]

It sounds like you're saying that the intermediate resistance values happen
only for some period of time (short by human standards) while the touch sensor
"switches" from "on" to "off" or vice versa.

Other people writing in this thread have been saying that the intermediate
resistance values result from intermediate amounts of pressure being applied to
the touch sensor's moving element, which would imply that the intermediate
resistance values could persist for quite a long period of time if the touch
sensor were being affected by a mechanism that could sustain such intermediate
pressure for a long time.

Am I missing something? (I haven't been able to get to my LEGO and try it out
since this discussion started, or else I'd just find out for myself)

- Robert Munafo                           http://www.mrob.com/
  LEGO: TC+++(8480) SW++ #+ S-- LS++ Hsp M+ A@ LM++ YB64m IC13



Message has 1 Reply:
  Re: multiplexed touch sensors [was: Re ideas for a RIS 2.0]
 
(...) I don't doubt that there are reasonable creations that e.g. press a touch sensor button halfway for extended periods of time, but I can't think of any off the top of my head. Can anybody help me out here? My point was that in what I would (...) (25 years ago, 26-Aug-99, to lugnet.robotics)

Message is in Reply To:
  Re: multiplexed touch sensors [was: Re ideas for a RIS 2.0]
 
(...) Having revisited this entire sub-thread, it seems people started rambling on (constructively, I think) about switch times, debouncing, etc. Getting back to multiplexed touch sensors, I bet it's possible to get the Lego touch sensors to work (...) (25 years ago, 25-Aug-99, to lugnet.robotics)

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