RCX programmable brick : 2202


Robotics / RCX / 2202	2201 \| 2203

Subject:	Re: Multiplexing 4 touch sensors on an RCX input port
Newsgroups:	lugnet.robotics.rcx
Date:	Thu, 11 Sep 2003 16:03:39 GMT
Viewed:	3776 times

"Steve Hassenplug" <Hassenplug@mail.com> wrote: [snip] > The biggest problem will be that the standard touch sensors may not be 100% on > when you press it. This means the sensor itself can provide some resistance, > depending on how hard you press it. > > You can test this by hooking up a touch sensor (configured to display raw > values) and softly press it. You'll notice, the harder you press it (to a > point) the more the number changes. (I forget if they go up or down, using the > standard software/firmware). Then, as you release the button (VERY slowly) you > see the numbers change, again. This has always annoyed me about the Lego touch sensors. Has anyone ever made or seen a contraption that uses the variable pressure sensitivity of the Lego touch sensors? Tim

Message has 1 Reply:

		Re: Multiplexing 4 touch sensors on an RCX input port
(...) I've made one. A wall follower. I set the sensor to raw mode and looked at three ranges. It tried to stay in the middle range, which for this 'bot meant lightly touching the wall. The wall follower had a bumper analogous to a highly curved (...) (21 years ago, 12-Sep-03, to lugnet.robotics.rcx)

Message is in Reply To:

		Re: Multiplexing 4 touch sensors on an RCX input port
(...) While in theory, this sounds very cool, in pratice, I doubt it will work quite that well. The biggest problem will be that the standard touch sensors may not be 100% on when you press it. This means the sensor itself can provide some (...) (21 years ago, 9-Sep-03, to lugnet.robotics.rcx)

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