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Chapter 7. Sessionless Networks

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Perform-o-shoes by Andrew Schneider

The shoes exchange messages with a multimedia computer via XBee radio. When you moonwalk in the shoes, your pace and rhythm controls the playback of music from the computer.

So far, the network connections you’ve seen in this book have mostly been dedicated connections between two objects. Serial communications involve the control of a serial port; mail, web, and telnet connections involve a network port. In all these cases, there’s a device that makes the port available (generally a server), and something that requests access to the port (a client). Project 8, Networked Pong, in Chapter 5 was a classic example of this—in that application, the server handled all the communications between the other devices. In this chapter, you’ll learn how to make multiple devices on a network talk to each other directly, or talk to all the other devices at once.

Supplies for Chapter 7

DISTRIBUTOR KEY

BASIC XBEE BREADBOARD CIRCUIT

Several of the projects in this chapter use XBee radios. In each project, ...

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