Hi,
I created a custom message:
SonarDistances.msg
uint8 front_middle
uint8 right_front
uint8 right_middle
uint8 right_rear
uint8 left_front
uint8 left_middle
uint8 left_rear
uint8 rear_middle
Catkin_make install and creation of the ros_lib etc. was done. devel path added to .bashrc.
Baud rate on arduino nano was set.
> Serial.begin(57600)
Upload to arduino was fine.
Now I start roscore and rosserial
> rosrun rosserial_python serial_node.py /dev/ttyUSB0
After this I receive continously the following messages in the terminal:
> [ERROR] [1521061577.369482]: Tried to
> publish before configured, topic id
> 125
>> [ERROR] [1521061577.434796]: Creation
> of publisher failed: need more than 1
> value to unpack
If I just use a simple chatter rosserial example with a string message the connection works an the topic is shown with rostopic echo.
Any advise?
BR
Marco
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