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----- Transcript of session follows ----- <<< HELO media.mit.edu <<< MAIL From:<brose@ipa.net> <<< RCPT To:<jwright@seattleu.edu> <<< DATA <<< QUIT mail: /var/spool/mail/jwright: cannot append mail: cannot open dead.letter 554 (...) (28 years ago, 4-Jan-97, to lugnet.robotics.handyboard)
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| | Handyboard Parts
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Well here I am again. I have gotten all my parts except the microprocessor (MC68HC11A1FN), the IR demodulator (IS1U60), and the 32K static CMOS RAM (62256-100LP). I have tried Jameco for the RAM but the Jameco part number 42833 doesn't seem to be (...) (28 years ago, 4-Jan-97, to lugnet.robotics.handyboard)
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| | Got V2X working...!
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Recently I posted a request for help in interfacing the 68HC11 to the Vector 2X, and through the help of readers of these groups, thank you very much, I was able to get it running. It was quite persnickety, with many possible modes of operation, so (...) (28 years ago, 4-Jan-97, to lugnet.robotics.handyboard)
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| | Re: pcode downloading
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(...) Yep, that checks out. (...) I get the correct voltages for the caps. And if the wrappers are on correctly they should all have the correct polarity. I ordered a replacement MAX232CPE (not the high speed "A" version). Hopefully this will either (...) (28 years ago, 3-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Coparison of Sensors
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(...) I agree. You should only have a semi-colon after a while if you dont want that while to loop through any instructions. A semi-colon after a while tells the compiler that all you want to do is continuously test the while condition until it (...) (28 years ago, 3-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Coparison of Sensors
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(...) Looks like you got too many semi-colons. Take out the semi-colons on all the while lines where you want the while to do the following thing. The process is getting to the "while(!start_button());" line and staying there. Also you have too many (...) (28 years ago, 3-Jan-97, to lugnet.robotics.handyboard)
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| | Config 0C / 0D
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Hi, I know this is an old chestnut but believe me I have searched the mail archive and nothing quite matches what I'm seeing. I have a handyboard which I made and which seems to work perfectly. However, I have to download (using hbdl) with the (...) (28 years ago, 3-Jan-97, to lugnet.robotics.handyboard)
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| | Re: pcode downloading
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(...) OK, well I think it is isolated at the pseudo-MAX232 chip. Did you get the +10 v power supply pin on the p-MAX ok? It's at pin 2. Measure it w/r/t ground and you should get +10v. Before you order a real Maxim, check the polarity of your (...) (28 years ago, 3-Jan-97, to lugnet.robotics.handyboard)
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| | Re: pcode downloading
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(...) : (...) I get -8.9v when its not jumped. When jumped I get some floating values in the mV range. I checked all of the solder joints. Changed power supplies. Removed and reseated the chip. Checked power and continuity at various points around (...) (28 years ago, 3-Jan-97, to lugnet.robotics.handyboard)
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| | Re: pcode downloading
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Here is the relevant part of the test instructions: Finally, the MAX232's ability to transmit data to the host computer is tested. Again using pin 7 of J9 as a ground reference, measure the voltage at pin 3 of J9. This is the MAX232's serial output. (...) (28 years ago, 3-Jan-97, to lugnet.robotics.handyboard)
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