If you want to put your robot on the Web I recommend you take a look at some interactive devices on the Internet. A good first stop is the University of Ulm's model railroad. When you visit their Web site, you are entered into a queue of people who may issue a command to one of two Schnell Zugs and / or leave a message to the other operators.
Second, issue your command (by clicking on a train and a destination) and sit back to wait. Eventually, your turn will come, your command will move the train, and your message will be seen by all those in the queue. Be advised that this site easily gets thousands of hits each day, and a new user logs