Hi, I'm currently setting the parameters for the controllers (PID and so on) via a message (I have a subscriber which updates the values when it receives the corresponding message). It works well, but I wanted to know what was the recommended way of doing that in ROS. Is it better to do it using parameters? (But then how can I change the corresponding values when the parameters are updated?) Cheers, Ugo -- Ugo Cupcic | Shadow Robot Company | ugo@shadowrobot.com Software Engineer 251 Liverpool Road need a Hand? London N1 1LX | +44 20 7700 2487 http://www.shadowrobot.com/hand/ @shadowrobot