How to publish Image and IMU data from Android device ?

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Thanks for your reply. So, should i run "roscore" and "roslaunch rosbridge_server rosbridge_websocket.launch" command in my computer to receive the data from android device ?

roscore will be run automatically for you by roslaunch if you don't do it yourself, but basically: yes.

i opened the html file in my Android Phone and opened the console in it. Then i ran "roscore" and "roslaunch rosbridge_server rosbridge_websocket.launch" in my laptop. But, nothing happens.

First: I think the order should be the other way around: first roslaunchrosbridge, then open the web page. Second: the tutorial states:

make it accessible via a webserver running on the server that is running the rosbridge [..]

Did you do that?

Also: what did you expect to happen? The JS only causes the phone to publish IMU and sensor_msgs/Image msgs. If you don't subscribe to those, you won't see anything.

You can start a 'simple web server' on your ROS pc by running:

python -m SimpleHTTPServer

in the directory containing the html file.