Subject:
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Re: A neat idea for touch sensors
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 5 Oct 2000 13:17:19 GMT
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Viewed:
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780 times
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lego-robotics@crynwr.com (Tilman Sporkert) writes:
> >
> > There are the Cybermaster touch sensors with resistors,
> > but that's a rather expensive solution.
>
> Some time ago somebody came up with a complicated wiring
> scheme to connect multiple Cybermaster touch sensors in
> series to a single input port.
That probably was me
(http://www.mpi-sb.mpg.de/~juergen/lego/cybermaster-touchsensors.html).
> That required a lot of Lego wires, put together in funny
> ways (only partially overlapping etc.)
I used five wires for convenience, since I have enough of them.
But you can get by with just three wires if you connect them
directly to the sensors and the input port in a loop (this is
somebody else's idea, unfortunately I forgot whose and where I
saw it). If I remember correctly you have to half-overlap the
cables with the sensors, i.e. connectors side by side with the
sensor in the middle below and both wires pointing sideways in
the same direction. On the input port put them on top of each
other, with the wires in the same direction.
Jürgen
--
Jürgen Stuber <stuber@loria.fr>
http://www.loria.fr/~stuber/
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Message has 1 Reply:
 | | Re: A neat idea for touch sensors
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| (...) make that four, one more than the number of sensors (...) It's on Michael Gasperi's site ((URL) Schumm has figured out how to orient the wires to allow two or more Touch sensors to be hooked in series to create the AND function. Here is his (...) (24 years ago, 6-Oct-00, to lugnet.robotics)
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Message is in Reply To:
| | Re: A neat idea for touch sensors
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| (...) Those resistors in the Cybermaster touch sensors are in parallel to the sensor. You can read its value when the sensor is not pressed. Cybermaster uses it to figure out which sensor is connected to what port before starting the actual program. (...) (24 years ago, 4-Oct-00, to lugnet.robotics)
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