Building electronic projects that interact with the physical world is good fun. But when the devices you’ve built start to talk to each other, things really get interesting. The workbenches of hobbyists, hackers, and makers have become overrun with microcontrollers — computers-on-a-chip that power homebrewed video games, robots, toys, and more. In Making Things Talk, author Tom Igoe shows how to make these gadgets communicate. Whether you need to plug some home sensors to the Internet or creat


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