When put in, include things like the ros.h library at the beginning of your Arduino sketch to access ROS functions. Initialize a NodeHandle with ros::NodeHandle nh; that will act as the main obtain place to communications with the ROS system. ♦Through the handling and installation, be sure to listen to https://miros39516.bleepblogs.com/27022809/the-fact-about-stem-robot-that-no-one-is-suggesting