[Gumstix-users] Gumstix Serial Connection Problems

[David F. <fre...@pr...>]

Hi,
I am working on a project involving Gumstix and was wondering if you could
help me out.  I currently have 5 sets of the following: 1 connex 400xm-bt, 1
wifistix fcc, and 1 robostix.  My goal for now is just to talk to the
gumstix via serial from either my linux- or windows-based laptops.  I set it
up as follows: The three boards are connected, with the motherboard in the
middle.  I then use the series of connections shown
here<http://roboticsprimer.sourceforge.net/workbook/Image:UART_Brain_Null.jpg>(the
first piece can be found
here <http://www.acroname.com/robotics/parts/S13-SERIAL-INT-CONN.html>) and
a standard serial cable which connects the null modem and the laptop.  I
follow the minicom instructions found
here<http://www.gumstix.net/Software/view/Getting-started/Setting-up-a-serial-connection/111.html>
and
power the robot with a 4 AA battery pack converter, but nothing comes up on
the screen.  A red and yellow light each appear on the serial interface and
one green light appears on both the wifistix and robostix.  I feel like I
should at least see the gumstix booting up on minicom, but I see nothing.
Any help or advice would be greatly appreciated.

Thank You,

David Freifeld