Park's profile - activity

Hi all.

I'd like to translate /cmd_vel(geometry_msgs::Twist) to ackermann_msgs::ackermannDrive.

Linear speed is same in two msgs.(linear.x = speed)

How can I covert angular velocity to steering angle?(angular.z --> steering_angle)

Are there nodes for it? I couldn't find to translate from angular velocity to steering angle.

Could you please let me know equation and necessary parameters?

Thanks.

Thanks Skiesel. Now the website works.

Hi.

Is Gazebo site down?

I can't enter the site.

www.gazebosim.org

Thanks you Pablo!!!

You're right. It was topic connection problem.

I added remap command in "teleop_joy.launch".

remap from="/p2os_teleop/cmd_vel" to="/cmd_vel"

remap from="/p2os_teleop/joy" to ="/joy"

I works well..The robot moves now..

Thanks for your help..

I found that beep means not to receive command from user in two second..so I've revised pulse time(-1.0 --> 1). There are no beep now. but teleop_joy & keyboard don't work..as before. However, "$ rostopic pub /cmd_vel ...(I'm forget..)" works well..finally, pioneer moves..

There is one problem to solve teleop...I think teleop_joy.launch file has something wrong.....

anyone else give me a help?

Could you solve this problem? I have the same problems with you. I have Pioneer 3-at without built in computer and notebook connected with pioneer using serial to usb cable.

I run the program (roscore, run p2os_dashboard, run p2os_drive, roslaunch telop_joy) and then enable the motor on the dashboard. rostopic lists are the same as you.

"rostopic echo /joy" works well...but pioneer doesn't work..and "rostopic echo /cmd_vel" are blank when I push the joystick buttons.The robot just beeped at fixed times.

I'd like to know ..what the problem is?

Could you solve this problem? I have the same problems with you. I have Pioneer 3-at without built in computer and notebook connected with pioneer using serial to usb cable.

I run the program (roscore, run p2os_dashboard, run p2os_drive, roslaunch telop_joy) and then enable the motor on the dashboard. rostopic lists are the same as you.

"rostopic echo /joy" works well...but pioneer doesn't work..and "rostopic echo /cmd_vel" are blank when I push the joystick buttons. The robot just beeped at regular time period.

I'd like to know ..what the problem is?

I have pioneer 3-AT robot. It connected my notebook with serial to usb cable. ROS fuerte has installed in my notebook with Ubutu 11.10. I installed p2os referred to p2os_tutorial.

When I launch the p2os teleop_keyboard, it works well, but pioneer doesn't move. The motor is fully enabled with p2os_dashboard. p2os teleop_joy has the same problem. The pioneer beeps only..in regularly.

Could you give me a help?

• roscore

jhp@ubuntu:~$ roscore
... logging to /home/jhp/.ros/log/5d906d6c-d7c3-11e1-9b40-001d728c5b11/roslaunch-ubuntu-19950.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://ubuntu:47612/
ros_comm version 1.8.10

SUMMARY
========

PARAMETERS
 * /rosdistro
 * /rosversion

NODES

auto-starting new master
process[master]: started with pid [19966]
ROS_MASTER_URI=http://ubuntu:11311/

setting /run_id to 5d906d6c-d7c3-11e1-9b40-001d728c5b11
process[rosout-1]: started with pid [19979]
started core service [/rosout]

• Run the p2os_driver

jhp@ubuntu:~$ rosrun p2os_driver p2os 
[ INFO] [1343377049.882478998]: using serial port: [/dev/ttyUSB0]
[ INFO] [1343377049.904677981]: P2OS connection opening serial port /dev/ttyUSB0...
[ INFO] [1343377050.313218974]: SYNC0
[ INFO] [1343377050.513818710]: turning off NONBLOCK mode...
[ INFO] [1343377050.714331842]: SYNC1
[ INFO] [1343377051.114779904]: SYNC2
[ INFO] [1343377051.715227279]: Done: Connected to Samtronics3233, a Pioneer p3at-sh
[ INFO] [1343377054.118100925]: resetting raw positions

• Run teleop_keyboard

jhp@ubuntu:~$ roslaunch p2os_launch teleop_keyboard.launch 
... logging to /home/jhp/.ros/log/5d906d6c-d7c3-11e1-9b40-001d728c5b11/roslaunch-ubuntu-21208.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://ubuntu:55497/

SUMMARY
========

PARAMETERS
 * /p2os_teleop/axis_vw
 * /p2os_teleop/axis_vx
 * /p2os_teleop/deadman_button
 * /p2os_teleop/run_button
 * /rosdistro
 * /rosversion
 * /spawn_teleop_keyboard/run_vel
 * /spawn_teleop_keyboard/walk_vel
 * /spawn_teleop_keyboard/yaw_rate
 * /spawn_teleop_keyboard/yaw_run_rate

NODES
  /
    p2os_teleop (p2os_teleop/p2os_teleop)
    pioneer_joy_controller (joy/joy_node)
    spawn_teleop_keyboard (pr2_teleop/teleop_pr2_keyboard)

ROS_MASTER_URI=http://localhost:11311

core service [/rosout] found
process[spawn_teleop_keyboard-1]: started with pid [21230]
Reading from keyboard
---------------------------
Use 'WASD' to translate
Use 'QE' to yaw
Press 'Shift' to run
process[p2os_teleop-2]: started with pid [21249]
process[pioneer_joy_controller-3]: started with pid [21278]
[ERROR] [1343377381.019514449]: Couldn't open joystick /dev/input/js0. Will retry every second.

-rostopic list

jhp@ubuntu:~$ rostopic list
/aio
/base_controller/command
/battery_state
/cmd_motor_state
/cmd_vel
/diagnostics
/diagnostics_agg
/dio
/gripper_control
/gripper_state
/joy
/motor_state
/p2os_teleop/cmd_vel
/p2os_teleop/des_vel
/p2os_teleop/joy
/pose
/ptz_control
/ptz_state
/rosout
/rosout_agg
/sonar
/tf