Now that the XBee connectivity is covered, it is time to actually exchange some data wirelessly between your Arduinos. In the previous chapter, you have already seen the API frames involved in transmitting and receiving data through the network. In this section, you will let the Arduino use those API frames to exchange a simple
Hello, world! message again. For this, the sender will use the XBee module that you configured as a router, while the receiver will use the coordinator XBee.
Remember that sending a message involves a few different API frames: