Subject:
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Re: 9600 Baud / help with pa7
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 5 Feb 1998 13:43:51 GMT
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Original-From:
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Fred G. Martin <fredm@/saynotospam/media.mit.edu>
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Viewed:
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1957 times
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> I'm sure that this has been posted tons of times, but I am trying to use
> the 9600 serial library. I can't seem to get anything to echo on Zterm. I
> used a phone cable and hooked it up to digital port 9, and then to the HB
> serial/charger.
Perhaps you have the RJ11 cable wired wrong. Make sure you have the
ground signal and the data from pa7/digital 9 connected.
see below...
> I recently downloaded the pa7_9600 software that would allow me to use
> pa7 as a ttl level serial port at 9600 baud. My question is, where is pa7
> brought out? The schematics and parts layout drawings have only confused
> me. The crude drawing below is where I think it might be, please
> help me out, my robot is anxious to walk!
Looking at the digital and analog sensor headers:
live signal [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
+5v [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
ground [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
sensor# 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
The whole row labeled "+5v" is a source of +5v power. The whole row
labeled "ground" is a source of ground. The row labeled "live signal"
is 15 different signal pins.
To attach to the 9600 baud output, you must connect from the live
signal line of sensor 9, and any ground. You might as well use the
ground beneath the sensor 9 signal. It would connect to an RJ11 plug
(to go into the HB serial interface) as follows:
RJ11 plug
(metal side up)
+-------------------+
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| ========|#
| ========|#
ground -------------------------+-----------========|#
sensor signal 9 ----------------+-----------========|#
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+-------------------+
Fred
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Message is in Reply To:
 | | 9600 Baud
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| I'm sure that this has been posted tons of times, but I am trying to use the 9600 serial library. I can't seem to get anything to echo on Zterm. I used a phone cable and hooked it up to digital port 9, and then to the HB serial/charger. I get (...) (27 years ago, 4-Feb-98, to lugnet.robotics.handyboard)
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