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Thread: Turtlebot arm servos not being recognized

  1. Turtlebot arm servos not being recognized

    I am using a turtlebot arm and just finished getting the ROS sketch uploaded to the ArbotiX board when I ran into an error. I run the command to search for the servos after having plugged only one into the board and get the following result:
    Code:
    [email protected]:~$ rosrun arbotix_python terminal.py /dev/ttyUSB0
    ArbotiX Terminal --- Version 0.1
    Copyright 2011 Vanadium Labs LLC
    >>  ls
    .... .... .... .... .... .... .... .... .... 
    .... .... .... .... .... .... .... .... .... 
    >>
    I have tried multiple cables and multiple servos to see if either was the problem. Neither of them turned out to be the problem. I have established that the servos do at least move, since I was able to issue them commands using PyPose. The only concern that I have is the the red light on the servos first light up when I plug them in, but do not stay lit for more than a second. I am currently running the arbotix board directly off of a iRobot Create battery (as opposed to going through the power board, since the only port on my power board is being occupied by the create). I don't think that should cause a problem, but figured I would mention it. Does anyone have an idea why my computer cannot read the servos, or any recommendations for other troubleshooting steps to take? Thank you very much!

  2. #2
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    Re: Turtlebot arm servos not being recognized

    I've replied on answers.ros.org. Please don't cross post, the ROS experts here will also be on answers.ros.org.

    -Fergs

  3. Re: Turtlebot arm servos not being recognized

    I apologize, I did not realize that the communities were so closely linked. It shall not happen again.

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