The module is a microcontroller board based on the controller ATmega32U4 with 32k flash. Board can be powered either from the USB connection or a Lithium battery(80mA output current). And the board can charge for the Lithium battery through the USB port. The USB port on the board can be also used for upload program.When you upload program to the Xadow Main Board as you do with other Arduino boards, please select "Seeeduino Xadow" from the Tools > Board menu. It is a indispensable part in the Xadow Kit.
Note: This module is not compatible with any other Xadow version 2 or RePhone modules.
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