Subject:
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Re: Any substitute to the default lego serial cable!
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Newsgroups:
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lugnet.robotics.rcx.java
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Date:
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Wed, 24 Jul 2002 16:22:07 GMT
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Viewed:
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4479 times
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Hi! Paul,
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|Thanks for your help first. I didnt' test it using lejos! I just used
|the default LEGO RIS UI in win98 to try to download the lego default firmware
|to RCX brick!
|When the dialog box under the hardware setting option informed me the firmware
|was ready, the green LED of the tower was on!
|I think the serial RS-232 cable I chosen was wrong!
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|More, sorry for a stupid question but I'd like to ask is 'null modem cable' ?=
|'laplink cable', will their pin assignments be equal or not?
Is the pin assignment indicated in the RCX internal universal or just
specified for lego serial tower?
|Finally, I'm interested in making the mindstorms robot as telerobot using
lejos
|on linux, I want to ask whether using IR serial tower is the only way to run
lejos on
|linux? (I hope this question won't make you get confused!)
|
|Laurence
Paul Andrews wrote:
> The cable is wired as a null modem cable (see
> http://graphics.stanford.edu/~kekoa/rcx/). If that's what you have, then it
> should work.
>
> A couple of other questions:
>
> 1. When you try to download the firmware does the green light on the tower
> come on?
> 2. Have you set RCXTTY to the correct value (it defaults to COM1)?
> 3. What error does lejosfirmdl report?
> 4. What error doe sit report if you use the -v flag?
> 5. Are you using the -f flag? If so try it without that flag.
> 4. Have you put the battery in the tower?
>
> Sorry if these are dumb questions, but you never know ;-)
>
> In lugnet.robotics.rcx.java, Laurence K.W. Yip writes:
> > Hi, all!
> >
> > I've just bought and got a IR serial tower from bricklink but I haven't
> > a default lego serial cable. Originally, I think ordinary RS-232 DB-9F
> > to DB-9F cable can be used instead, but I fail to do the firmware
> > downloading under Win98 RIS UI interface. Can anyone tell me is it
> > necessary to use the default LEGO serial cable without any
> > substitiution?
> >
> > Rgds,
> >
> > Laurence
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