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RUN&USB Config xbee/bluetooth/wifi bee setting via PC using AT commands

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RUN&Xbee Drive the xbee module via Arduino TTL pins for sending commands

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PROG Turn to "PROG" when programming Arduino processors(UNO/Mega/ADK).

The PROG function is useless for Arduino Leonardo,because its programming interface is

isolated from D0&D1 pins. And if using Arduino Leonardo,need to program a simple Serial to

Serial1 transparent communication code to configure Xbee setting directly.

https://www.dfrobot.com/wiki/index.php/Xbee_Shield_For_Arduino_(no_Xbee)_(SKU:DFR0015) 5-2-17