Subject:
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Re: Wireless RCX Communication.
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 11 Feb 2007 11:10:26 GMT
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Viewed:
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3318 times
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In lugnet.robotics, Chris Malton wrote:
> Hello,
> This may seem a little odd, but I want to get the RCX talking to the
> PC wirelessly without compromising the infrared sensors! This may seem
> a little odd, but it is because I need line of sight between the two
> robots, but communication from anywhere with the PC. I don't need this
> to be secured or anything fancy, just plain communication, as the RCX
> would do through the IR port, only wirelessly. I'd also prefer not to
> have to use custom firmware.
>
> Any ideas how to do it?
>
> Bluetooth isn't an option unless you can have up to 50 or so devices
> paired at once!
>
> Chris
"little odd" ? This is totally odd.
1. Possible wireless channels are : infrared or visible light, modulated
ultrasonic/sound or radio
2. You don't want to compromise infrared sensors, so there only remains
modulated acoustics/ultrasonics or radio.
3. Anyway, using Bluetooth with the RCX is absolutely reserved for extreeeeeme
advanced people who are not afraid of opening the RCX and hacking it and using
replacement firmware that they must write themselves. There is only one guy who
has done this, a student at Paderborn (Ge) University. So Bluetooth is not only
a matter of price with the RCX. (cf
http://www.convict.lu/Jeunes/Mars_Mission_B/Mars_mission_III.htm)
4. We have built a secure bidriectional infrared/RF repeater system for our
Mars-project. This was odd but works without fail:
http://www.convict.lu/Jeunes/Mars_Mission_B/Mars_Mission_B_Main.htm.
5. I think the European electronics journal Elektor presented another less
complex non-secure IR/RF repeater system.
6. Why not use sound? You would build 2 Mike Gasperi's sound detectors, directly
connect a loudspeaker to each RCX (as has done Prof Ole Caprani at Aarhus (Dk)
University) in order to obtain enough intensity and try a kind of acoustic Morse
or FSK.
7. Modulating ultrasonics is odd too, but also interesting.
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Message has 1 Reply:
 | | Re: Wireless RCX Communication.
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| Allow me to re-state what I am trying to achieve: I have however many RCX bricks, for which I want line of sight communication between ONLY. For the RCX to PC comms, I would like to use some other method that is not limited to line of sight, but I (...) (18 years ago, 11-Feb-07, to lugnet.robotics)
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Message is in Reply To:
| | Wireless RCX Communication.
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| Hello, This may seem a little odd, but I want to get the RCX talking to the PC wirelessly without compromising the infrared sensors! This may seem a little odd, but it is because I need line of sight between the two robots, but communication from (...) (18 years ago, 11-Feb-07, to lugnet.robotics)
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