Subject:
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Re: failure in communicaton between RCX & IR Tower
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Newsgroups:
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lugnet.robotics.rcx.robolab
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Date:
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Wed, 19 Nov 2003 03:01:29 GMT
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Viewed:
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9120 times
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Hi, Nathan,
I truly suspect that the issue is the Toshiba hardware of this particular
laptop model. I have 3 Dell desktops, 3 laptops. They all have built in
usb ports, either 2.0 or 1.0. They all work fine, with the identical setup
up, even with full power for the laptop ( i.e. hooked up to the wall
outlet). I even tested with different usb 1.0 devices, such as video
camera, printer, etc. They all work fine with my other computers, but not
this toshiba model. Also tested with LEGO original mindstorm rcx sofware.
Same symptom... what makes it really hard is that it crashes my laptop at
the very first attempt for connection between the rcx and the tower.
Due to time restraint, I have not gone through the last alternative yet, ie.
running nqc/windows and/or nqc/linux. That will be my last trial, I presume
before I give up with using this toshiba...!!!
By the way, I recommend not to purchase toshiba if you are a person who is
an even slightly computer handy person (I got this machine as a present). I
opened the back of the laptop to put in a new hard drive, no big deal. I
was told later that Toshiba voids the warranty and provides no support. I
asked them proof from warranty statement, but I got no direct response.
Anyhow, as soon as I get the time to try out the nqc alternative, I'll
update this thread.
--
E
"Elizabeth Mabrey" <emabrey@storming-robots.com> wrote in message
news:HMux2o.19np@lugnet.com...
> PC: toshiba - P25 series model with four usb 2.0 ports, an • bluetooth/wi-fi
> capability, w/ infrared port built in as well.
> IR Tower : usb
> RCX : 1.0
>
> Symptom:
> - communication between the ir tower & laptop is fine... verified with the
> device manager
> - in the administrator/robolab screen, I selected usb#1 and attempted to
> download the firmware. The IR Tower's green light is on for a while; I
> assume it is attempting to communicate with the rcx. But no response.
> - tested the identical tower and rcx with my other 3 boxes (one XP/laptop,
> one XP/desktop, one Win2003/desktop). Communication between the tower and
> rcx works just fine. These boxes have usb1.1 ports and have NO
> bluetooth/wi-fi capability, havce NO infrared port built in.
>
> Trouble Shooting:
> - definitely not the tower, nor the rcx because they work fine with other
> boxes;
> - definitely not the external environment; because I even isolated them in • a
> black box during the test.
> - definitely not power as both my laptop and the rcx connected to AC
> adapter.
> - not the usb compatibility problem because ir tower communicates fine • with
> the laptop, as indicated by the device manager, as well as the green light
> from the tower as it attempted to download firmware.
> - does not seem to be because of the bluetooth because I disabled the
> bluetooth device thru the device manager.
>
> pondered problem:
> - what cause the rcx failing to communicate properly back to the tower?
>
> Comments and suggestions will be greatly appreciated!
>
> --
> thanks
> EM
>
>
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