##trystart
=== Try it ===
Before diving into nxt and ROS make sure that you can communicate with your brick by running a simple test. 

Start a roscore in a new terminal:
 {{{
roscore 
}}}

Then run one or both of the following tests in another terminal:

Touch sensor, plug the touch sensor into PORT1 and run the following code. It will display the current state of the touch sensor.
 {{{
rosrun nxt_python touch_sensor_test.py 
}}}

Color sensor,plug the color sensor into PORT1 and run the following code. It will cycle the LED colors and display the intensity then the color detected.
 {{{
rosrun nxt_python color_sensor_test.py 
}}}

Your computer is not configured correctly or the brick is off if you see:
 {{{
Traceback (most recent call last):
  File "/u/mwise/external_repos/foote-ros-pkg/nxt/trunk/nxt_python/sensor_tests/touch_sensor_test.py", line 21, in <module>
    sock = nxt.locator.find_one_brick()
  File "/u/mwise/external_repos/foote-ros-pkg/nxt/trunk/nxt_python/src/nxt/locator.py", line 57, in find_one_brick
    raise BrickNotFoundError
nxt.locator.BrickNotFoundError
}}}
##tryend
=== Next step ===
Now check out our starter robots in [[nxt_robots]].

Or, find tutorials and more documentation in [[nxt]].