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NMEA from Garmin to BS2 — Parallax Forums

NMEA from Garmin to BS2

ArchiverArchiver Posts: 46,084
edited 2002-09-10 20:20 in General Discussion
I am trying to connect a Garmin 12 to a BS2 via a 4N25 opto-
isolator. I can not seem to obtain a baud rate higher than 300. I
can send 9600 from a pc via the same setup. Has anyone connected a
Garmin GPS to a BS2? How did you do it?

Thanks for any ideas...
Philip Kubat

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2002-09-08 19:34
    Inside Parallax, we routinely connect the Garmin eTrex to BASIC Stamps. We
    especially like to use our BS2p since it allows us to capture the entire
    $GPRMC string to the scratchpad RAM. If you're concerned about RS-232 levels
    into your Stamp, you can protect the Stamp SERIN pin with a 22K resistor.

    -- Jon Williams
    -- Applications Engineer, Parallax


    In a message dated 9/8/02 1:16:16 PM Central Daylight Time,
    pkubat@s... writes:


    > I am trying to connect a Garmin 12 to a BS2 via a 4N25 opto-
    > isolator. I can not seem to obtain a baud rate higher than 300. I
    > can send 9600 from a pc via the same setup. Has anyone connected a
    > Garmin GPS to a BS2? How did you do it?
    >
    > Thanks for any ideas...
    >




    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2002-09-10 20:20
    Hi:

    I have used the Garmin GPS45XL with the Stamp no problem. You don't need
    the opto isolator as the serial data from the GPS is already TTL level.
    Just hook 'em up and you're good to go.

    Mike B.
    Original Message
    From: "pkubat" <pkubat@s...>
    To: <basicstamps@yahoogroups.com>
    Sent: Sunday, September 08, 2002 11:04 AM
    Subject: [noparse][[/noparse]basicstamps] NMEA from Garmin to BS2


    > I am trying to connect a Garmin 12 to a BS2 via a 4N25 opto-
    > isolator. I can not seem to obtain a baud rate higher than 300. I
    > can send 9600 from a pc via the same setup. Has anyone connected a
    > Garmin GPS to a BS2? How did you do it?
    >
    > Thanks for any ideas...
    > Philip Kubat
    >
    >
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