Pioneer 3TM Manual Do Utilizador

Página de 85
Quick Start 
 
A Successful Connection 
 Table 2.  ARIA demo operation modes 
MODE
 
HOT 
K
EY
 
DESCRIPTION
 
laser 
Displays the closest and furthest readings 
from the robot’s laser range finder 
io 
Displays the state of the robot’s digital 
and analog-to-digital  I/O ports 
position 
Displays the coordinates of the robot’s 
position relative to its starting location 
bumps 
Displays the status of the robot’s bumpers 
sonar 
Displays the robot’s sonar readings 
camera 
Controls and exercises the robot’s pan-
tilt-zoom robotic camera 
gripper 
Controls, exercises, and displays status of 
the robot’s Gripper 
wander 
Sends the robot to move around at its own 
whim, while avoiding obstacles 
teleop 
Allows the user to drive and steer the 
robot via the keyboard or a joystick 
connected to the computer 
 
ARIA prints out lots of diagnostic text as it negotiates a connection with the robot.  If 
successful, the client requests various AROS servers to start their activities, including sonar 
polling, position integration, and 
so on.   The microcontroller 
sounds an audible connection 
cue, and you should hear the 
robot’s sonar ping with a 
distinctive and repetitive 
clicking.  In addition, the 
motors-associated  STATUS LED 
on the User Control Panel should 
light continuously (was flashing 
slowly while awaiting 
connection).  Note that the 
ARIA demo automatically 
engages your robot’s motors 
though a special client 
command.   Normally, the 
motors are disengaged when 
first connecting. 
The amber SERIAL port 
indicator LEDs on the robot’s 
User Control Panel should blink 
to indicate ARIA-client to AROS-
server communications, too.   
 
 
O
PERATING THE 
ARIA 
D
EMONSTRATION 
C
LIENT
 
 
When connected with the ARIA demo client, your robot becomes responsive and 
intelligent. For example, it moves cautiously.  Although it may drive toward an obstacle, 
your  ActivMedia robot will not crash because the ARIA demo includes obstacle-
avoidance behaviors which enable the robot to detect and actively avoid collisions.  
The  ARIA  demo  displays  a  menu  of  robot 
operation options.  The default mode of 
operation is teleop.  In teleop mode, you 
drive the robot manually, using the arrow 
keys on your keyboard or a joystick 
connected to the client PC’s joystick port 
(as opposed to a joystick port on the 
robot). 
 Table 2.  Keyboard teleoperation 
KEY 
ACTION 
 
Increment forward velocity 
 
Decrement forward velocity 
 
Incremental left turn 
 
Incremental right turn 
 space 
All stop 
 
While driving from the keyboard, each 
keypress speeds the robot forward or 
backward or incrementally changes its 
direction incrementally.   For instance, when turning, it is often useful to press the left- or 
right-turn key rapidly several times in a row, because the turn increment is small. 
The other modes of ARIA demo operation give you access to your robot’s various sensors 
and accessories, including encoders, sonar, laser, Gripper, a pan-tilt-zoom robotic 
camera, I/O port states, bumpers, and more.  Accordingly, use the ARIA demo not only 
 
26