Asynchronous serial communication concepts: packets, signal levels, baud rates, UARTs and more!
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Arduino Shields v2
An update to our classic Arduino Shields Tutorial! All things Arduino shields. What they are and
how to assemble them.
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Hardware Overview
Here's a quick overview of the most components of the XBee Shield:
Below we'll go more in-depth on the most important components of the shield.
UART/Software Serial Switch
One of the most important components on the XBee Shield is the DLINE/UART switch. This switch
controls which Arduino pins interface with the XBee.
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