In fact, LGDXRobot Cloud is a web service that relays messages between the user and a robot running ROS 2. The LGDXRobot Agent Node acts as the intermediary between the cloud system and the robot, collecting data from the robot and sending commands back to it.
LGDXRobot Cloud displays the robot’s status, including navigation data, location, and battery level. These data originate from the Sensor and Nav2 / ROS 2 nodes. The Agent node collects the data and sends it to the API, which then forwards it to the front-end. Data requiring real-time delivery is pushed to a Redis queue. The front-end subscribes to this queue and updates the UI in real time.
When a user wants to command a robot, they create a Task on the front end. A Task consists of waypoints that specify the positions the robot must reach. The request is sent to the API and then forwarded to the Agent node. The Agent node sends the waypoints as navigation goals to Nav2. Nav2 plans the path, generates the appropriate velocity commands, and returns them to the Agent node, which then sends the velocity commands to the robot. The robot moves accordingly. For the third-party system, it sends the commands directly to the API.