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From the picture (d1_p31) it looks as though all 4 RCXs can see the
tower. I don't know anything about pcrcxcomm.jar or rcxf7port; and not
much about lejos, however, if all 4 RCXs try to respond to the tower,
you will have collisions.
Try covering 3 of the RCXs so they cannot see the tower.
I am fairly sure you could use BrickOS with LNP in addressing mode; such
that each RCX has its own host address and the PC sends a message to the
appropriate RCX via the host address (and port number).
... now back to looking at the pictures ...
// Joe
http://www.calledtoconstruct.net
Gaasedal wrote:
> Hi everyone,
>
> Im working on a project with controlling a large Container Crane by 4 RCXs.
> I have implementet some controlling and a lot of functions in the model,
> including a userinterface made in Java for a laptop. The crane is controlled by
> a Joystick through the PC.
> <<http://www.gaasedal.dk/Images/Container_Crane/d1_p31.jpg>>
>
> My problem is the communication speed from the PC to RCX, it takes about 0.5 sec
> before the IR tower sends the message (1 byte) to the RCX. I use the lejos
> software and the pcrcxcomm.jar and I use the RCXF7PORT for communication.
>
> Are there any other method I can use which do not includes 0.5 waiting time, or
> do you know how to get around the problem?
>
> Please visit my homepage to see the project, I have put a lot of pictures in
> there. <http://www.gaasedal.dk>
>
> Thank you for your help.
>
>
>
> Best regards
>
> Anders Gaasedal
>
> LEGO Mobile Cranes
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Message has 1 Reply:
 | | Re: Communication Speed, PC -> RCX, LEJOS!
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| (...) Hi Joe, Thank you for your fast reply, you are right, alle the 4 RCXs can see the tower, but I dont think thats the problem, since the problem also is present when only one RCX is turned on, or the other 3 are removed from the place. I only (...) (20 years ago, 7-Jul-04, to lugnet.robotics.rcx, FTX)
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