Serial Communication Between two Arduino Boards - UART Interfacing
![Serial Communications - Arduino Cookbook, 3rd Edition [Book]](https://www.oreilly.com/api/v2/epubs/9781491903513/files/assets/acb3_0406.png "Serial Communications - Arduino Cookbook, 3rd Edition [Book]")
Serial Communications - Arduino Cookbook, 3rd Edition [Book]
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AltSoftSerial Library, for an extra serial port
