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Need help troubleshooting — Parallax Forums

Need help troubleshooting

TuscTusc Posts: 2
edited 2007-12-31 16:37 in BASIC Stamp
Hello and thanks in advance.

I'm having trouble getting my PC to recognize the Stamp. I use the identify tool in the editor and it comes back with Loopback - Yes, Echo - No. I am using a 9v battery and I have checked to make sure it is 100% charged, it is. Any ideas? I also looked for the FIFO settings but Win XP Pro does not have that as an option. Any suggestions would be great.

Tusc

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2007-12-28 02:08
    When Echo is "No", it means something is wrong with the serial data connection. It might be the cable. The connectors might be wired wrong, the serial port might be defective (or a USB to serial adapter). The Stamp doesn't have to be powered for Loopback and Echo to work, but it has to be powered to respond to the Identify command.
  • TuscTusc Posts: 2
    edited 2007-12-30 21:29
    Thanks Mike for the response. I have tried two different PCs and 3 different USB cables. Same response on both machines no matter which cable I use. This is a brand new, just out of the box Boe-Bot kit that I received as a Christmas gift. I know that electronics can be sensitive and touchy but I hate to think that I got a bad USB connector on the board. In fact I'm pretty sure that is not it because when I attach the cable the LEDs blink just like they should. I have tried this powered on and off, with the on/off switch in positions 0,1, and 2 and nothing is working. If anyone has any other ideas of things I can try I would appreciate it very much.
  • Mike GreenMike Green Posts: 23,101
    edited 2007-12-30 22:02
    Check to make sure you have the latest USB drivers and the latest Stamp Editor. Make sure you've got fresh batteries for the BoeBot and they're installed properly. I've used a variety of USB to serial adapters and different BOE revisions as well as Propeller boards and a Penguin and never had problems with the Stamp Editor recognizing the board, so I don't have much personal experience in fixing this. On the other hand, I use a Mac and run Windows XP under the MacOS, so the USB I/O handling is a little different. Worse comes to worst, call Parallax's tech support people after New Year's and they'll cheerfully help you straighten things out.
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2007-12-30 22:14
    "Loopback" is accomplished on the BOE board without the BASIC Stamp. "Echo" requires that a Stamp be present and powered. Since your PC is detecting the former, but not the latter, you're connecting okay and the USB interface is working, but the Stamp module itself is not responding with an echo.

    1. Is the BASIC Stamp plugged into the 24-pin socket correctly (i.e oriented properly with all pins in their respective holes)?
    2. Is the green LED on the BOE lit up?
    3. Do you have a voltmeter you can use to measure Vdd?
    4. If so is it 5V?

    -Phil
  • David H.David H. Posts: 78
    edited 2007-12-31 16:37
    Tusc,
    In regards to Phil's item #1 to check. I've heard that it's easy to misunderstand which is pin #1, and I've heard of a lot of discussions where the BasicStamp was put in wrong. So make sure it is put in the socket correctly.
    Good luck.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    David


    There are 10 types of people in this world,...
    Those that understand binary numbers, and those that don't!!!
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