Hey I need help figuring out which ports on the 2-axis magnetometer will allow me to connect .to the arduino and access data about the magnetic field level http://www.sparkfun.com/products/243
Did you look at the manual? http://www.sparkfun.com/datasheets/Sensors/CommBoard%20Manual.pdf Pin numbers are shown on page 4.
The User Guide show that the output is RS232 levels (+12/-12V). Do not connect them directly to the Arduino, unless you have a spare Arduino handy.
Well I was wondering whether some one could specify specific ports for using the magnetic field reader and how it attaches to the arduino using the SPI
read this:- http://www.arduino.cc/playground/Code/Spi