cannot connect on indigo about turtlebot_create

[PaulBouchier]

vliedel,
Edit <path_to_turtlebot_source>/turtlebot_create/create_node/nodes/turtlebot_node.py, and change the line (approx line 128) that says "msg = "Failed to open port...." to the following:

msg = "Failed to open port %s, Error: %s Please make sure the Create cable is plugged into the computer. \n"%((self.port), ex.message)

Save the file and launch the minimal.launch. Report the exact error message, which will now contain enough information to know the exact error. We can go from there.

[vliedel]

Hey, thanks for the quick reply :)
Here's the error message I got:

[ERROR] [WallTime: 1406030305.159096] Failed to open port /dev/ttyUSB0. Error: Port is already open. Please make sure the Create cable is plugged into the computer.

This is next to some rocon_app_manager errors, which i ignored for now.

And just to be sure I added some extra info about the device:
$ dmesg | grep tty
[ 0.000000] console [tty0] enabled
[ 274.003694] usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0
$ ls -l /dev/ttyUSB0
crw-rw-rw- 1 root dialout 188, 0 jul 22 13:57 /dev/ttyUSB0
$ grep dialout /etc/group
dialout: x:20:vliedel

[PaulBouchier]

This is issue #17
Here's a workaround until Daniel & his merry band update their repo. Edit the following file:
turtlebot/src/turtlebot_create/create_driver/src/create_driver/create_driver.py
Around line 213 you'll find two lines:
self.ser = serial.Serial(tty, baudrate=baudrate, timeout=SERIAL_TIMEOUT)
self.ser.open()

Delete the second line - it's trying to open the serial port a second time.

This should enable turtlebot_teleop keyboard_teleop.launch to work.

[kentsommer]

@PaulBouchier @vliedel

The fix for this (thanks @PaulBouchier) has been merged into the repo. See #18

[jlzizmor]

i'm having the same issue, however I checked the turtlebot dir and I don't have any further directories, just a package.xml.

I started installing all the software for the turtlebot and the steps instructed me to launch minimal.launch. Did I miss a step to fill out the turtlebot directory?

[trainman419]

@jlzizmor if you installed from binaries, this bug should be fixed in the version that you have.

If you installed from source, you would have the source, but this bug should still be fixed.

I suspect your problem isn't related to this; rather you probably don't have the permissions on your serial port set correctly.

[lucbettaieb]

Wait a sec- does turtlebot_create work on more than just the iRobot create 1?

I was planning on writing drivers eventually for the create 2 but was looking at a bunch of the serial commands and they seemed to be the same.

Any idea on how to run the drivers to get them working with indigo+create 2?