When working with rosserial on Arduino, you are able to publish and subscribe to ROS subjects, letting sensor knowledge to circulation through the Arduino to the ROS ecosystem and instructions from ROS to reach the actuators controlled with the Arduino. The Makeblock Supreme, the Makeblock mBot, along with the Elegoo https://robot-arm84051.tinyblogging.com/the-smart-trick-of-robot-arm-that-no-one-is-discussing-70217215