Greetings, I am attempting to use the dynamixel_controller stack to control an ax-12 servo. When I attempt to launch the node I get an error stating "Could not open port /dev/ttyUSB0 [Errno 2] no such file or directory: '/dev/ttyUSB0.' Now I've checked to make sure my usb2dynamixel is connected to ttyUSB0 with minicom and it is. After looking at my log I think it may have something to do with use_sim_time? My log file can be seen below, any help would be greatly appreciated.
[rospy.client][INFO] 2011-12-13 17:53:19,667: init_node, name[/dynamixel_manager], pid[2400]
[xmlrpc][INFO] 2011-12-13 17:53:19,668: XML-RPC server binding to 0.0.0.0
[xmlrpc][INFO] 2011-12-13 17:53:19,669: Started XML-RPC server [http://ubuntu:59821/]
[rospy.init][INFO] 2011-12-13 17:53:19,669: ROS Slave URI: [http://ubuntu:59821/]
[rospy.impl.masterslave][INFO] 2011-12-13 17:53:19,669: _ready: http://ubuntu:59821/
[xmlrpc][INFO] 2011-12-13 17:53:19,671: xml rpc node: starting XML-RPC server
[rospy.registration][INFO] 2011-12-13 17:53:19,672: Registering with master node http://localhost:11311
[rospy.init][INFO] 2011-12-13 17:53:19,770: registered with master
[rospy.rosout][INFO] 2011-12-13 17:53:19,849: initializing /rosout core topic
[rospy.rosout][INFO] 2011-12-13 17:53:19,855: connected to core topic /rosout
[rospy.simtime][INFO] 2011-12-13 17:53:19,858: /use_sim_time is not set, will not subscribe to simulated time [/clock] topic
[rospy.core][INFO] 2011-12-13 17:53:19,877: signal_shutdown [atexit]
[rospy.impl.masterslave][INFO] 2011-12-13 17:53:19,883: atexit
[rospy.client][INFO] 2011-12-13 17:53:47,887: init_node, name[/dynamixel_manager], pid[2510]
[xmlrpc][INFO] 2011-12-13 17:53:47,888: XML-RPC server binding to 0.0.0.0
[xmlrpc][INFO] 2011-12-13 17:53:47,889: Started XML-RPC server [http://ubuntu:50528/]
[rospy.init][INFO] 2011-12-13 17:53:47,890: ROS Slave URI: [http://ubuntu:50528/]
[rospy.impl.masterslave][INFO] 2011-12-13 17:53:47,890: _ready: http://ubuntu:50528/
[xmlrpc][INFO] 2011-12-13 17:53:47,891: xml rpc node: starting XML-RPC server
[rospy.registration][INFO] 2011-12-13 17:53:47,892: Registering with master node http://localhost:11311
[rospy.init][INFO] 2011-12-13 17:53:47,990: registered with master
[rospy.rosout][INFO] 2011-12-13 17:53:48,069: initializing /rosout core topic
[rospy.rosout][INFO] 2011-12-13 17:53:48,075: connected to core topic /rosout
[rospy.simtime][INFO] 2011-12-13 17:53:48,078: /use_sim_time is not set, will not subscribe to simulated time [/clock] topic
[rospy.core][INFO] 2011-12-13 17:53:48,097: signal_shutdown [atexit]
[rospy.impl.masterslave][INFO] 2011-12-13 17:53:48,104: atexit
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