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2015-06-09 09:10:11 -0500 asked a question Arduino rosserial - Unable to sync with device

Hi,

I have been using the rosserial_arduino in order to run a ROS node on arduino.

I have the following error:

[ERROR] [WallTime: 1433855869.447165] Unable to sync with device; possible link problem or link software version mismatch such as hydro rosserial_python with groovy Arduino

But, If I use the Arduino IDE before run the node it works fine.

[INFO] [WallTime: 1433858173.848825] Note: publish buffer size is 512 bytes
[INFO] [WallTime: 1433858173.849108] Setup publisher on /joystick_raw [lhd_msgs/Joystick]
[INFO] [WallTime: 1433858173.855225] Note: subscribe buffer size is 512 bytes
[INFO] [WallTime: 1433858173.855483] Setup subscriber on /leds_ocu [lhd_msgs/Leds]

If I disconnect the arduino, and I connect it again doesn't work again.

Is not a problem with the permissions of the USB.

Thanks

Can you help me out?

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2013-04-11 11:57:11 -0500 answered a question Unable to use the pr2 navigation stack tutorial on ros groovy

Hello, I had the same problem with that tutorial. Groove has many changes, so the tutorial will not work unless someone update it.

Best.

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2012-12-14 13:04:02 -0500 commented answer Move a P3AT robot with ROSARIA

Thanks. But I already check the serial port permission .... :-)

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2012-11-19 07:07:20 -0500 asked a question Move a P3AT robot with ROSARIA

Hello.

I got a problem moving the Pioneer 3-AT. Please help me. I installed a package ROSARIA but I can't move the robot. I'm using Ubuntu 12.04 asn ROS fuerte.

To install ROSARIA I used :

roslocate info ROSARIA | rosws merge - rosws update The RosMake was OK.

If I run : rosrun ROSARIA RosAria, the computers connected with the robot.

NonCritical Error: ARIA could not find where it is located. ArLog::init: File(aria.log) Verbose Logging Time Not also printing ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable ArSerialConnection::write:: Resource temporarily unavailable but If I publish some data to move the robot doesn't work !!

rostopic pub -r 10 /RosAria/cmd_vel geometry_msgs/Twist '[5,0,0]' '[0,0,0]'

Thanks

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2012-10-05 04:36:41 -0500 answered a question SMACH tutorial: ImportError: No module named msg

Hi ..

I had the same problem when I try to run the ./examples/state_machine.py in smach_tutorials package ...

There is a file called examples/actionlib.py in the same folder. Rename the file actionlib.py to actionlib1.py and delete the file actionlib.pyc.

With that change I could run all the tutorial examples.