This is how my setup looks like

• desktop computer
• odroid xu4 (arm computer)

I tried running the master on both computers and I export the the ROSIP and ROSMASTER_URI like that:

• oroid: export ROSIP=odroidIP and export ROSMASTERURI=http://desktop_IP:11311
• desktop: export ROSIP=desktopIP and export ROSMASTERURI=http://desktop_IP:11311

I publish image data from the odroid and I get the data on the desktop. I process the image data on the desktop computer and publish a std_msg::Float32 (lets call the topic "duration") message with a time stamp. So good so far...

Now here's the problem:

When I try plotting the "duration" topic with rqt or try rostopic echo "duration", I don't get any data. But when I write a small python script and subscribe to the topic "duration" and print the data on the console, it works just fine...

It also works if I run everything on the desktop computer (camera attached to the desktop) and run rqt or rostopic echo.

Any help would be appreciated

Thanks!