Subject:
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Re: MacNQC and RCX Troubles
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Newsgroups:
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lugnet.robotics.rcx.nqc
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Date:
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Fri, 29 Dec 2000 22:41:08 GMT
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Viewed:
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2232 times
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In lugnet.robotics.rcx.nqc, Bob Pariury writes:
> I have a PowerBook G3 233mhz (I think it's a wallstreet; it's black with the
> big white apple on the front, first generation) with plenty of ram. I'm also
> running system 8.1. The green light on the IR tower comes on when I run
> MacNQC and issue commands from the "test" panel, but I keep getting "RCX not
> responding" errors. The lighting in the room is not too bright, the RCX is
> plugged in with an adapter and pointed right at the IR tower. Check my other
> posts for more details (I'm kind of desperate). Thanks!
Yep. Thats the exact same PowerBook that I have, even down to the speed. I
never could get it to talk to the IR Tower. The same IR Tower would talk to the
older SE/30 with no problems. It may be a volage problem, or it may have
something to do with 'floating ground' state of the PB. Keep in mind that the
serial port on all Macs is RS-422, not RS-232. Connecting it to an RS-232 device
is a bit of a hack. I believe that RS-422 is a differential voltage standard,
while RS-232 is a single-ended standard.
My only suggestion would be to look into an external serial port on a PC card.
It *might* solve your problem.
Ray
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Message has 1 Reply:
 | | Re: MacNQC and RCX Troubles
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| (...) Actually, I think Bob's problems came from not having firmware installed. Hopefully things will start working once he gets firmware loaded. But there *are* cases of some strange serial behavior between Macs and the IR tower. My 300MHz (...) (24 years ago, 30-Dec-00, to lugnet.robotics.rcx.nqc)
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Message is in Reply To:
| | Re: MacNQC and RCX Troubles
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| I have a PowerBook G3 233mhz (I think it's a wallstreet; it's black with the big white apple on the front, first generation) with plenty of ram. I'm also running system 8.1. The green light on the IR tower comes on when I run MacNQC and issue (...) (24 years ago, 29-Dec-00, to lugnet.robotics.rcx.nqc)
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