Ros communicate via rs232

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Worth looking at this QA thread http://answers.ros.org/question/84821...

Thanks! I was looking at the rosserial_python package, that just might do what I want if I use some rs232 to usb converters. I can specify the ports in the launch file.

@jbrown: rosserial_python is actually a pkg that implements a bridge over a RS232 link that allows embedded devices to use the ROS pub/sub and svc model to communicate with a full ROS system without having to install full ROS on the embedded device. It is not a generic RS232 library for Python&ROS

Thanks! That does help me understand the python library better. I guess there isn't a generic rs232 library then. At one time, ros communicated with these servos via usb to rs232 converters.

Hi jbrown, I want to use ROS to control a robot arm by RS232C. Did you find out how to communicate via rs232? thank you

@yuanye: The previous comment from gvdhoorn is pretty good advice, it can communicate with a device over RS232 without ROS being installed on the device (Thanks gvdhoorn!). I like using rosserial_python myself. It may take some reading and trail and error, but there are tutorials and code samples.

There is a ROS Wiki page for rosserial if you google it, it is informative and helpful. I would also recommend that you look for sample code that uses rosserial as well as the Wiki page, the sample code will show you how to use rosserial_python in your code. What kind of robot arm are you using?