$8.62
$10.78
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The Cytron Arduino Pro Micro Compatible w/ Pre-soldered Headers is a super tiny, thin, Arduino compatible board with an ATmega32U4 as the main microcontroller.
The USB transceiver inside the 32U4 allows us to add USB connectivity on-board and do away with a bulky external USB interface. There is a voltage regulator on board so it can accept voltage up to 12VDC.
Note: You need a micro USB to program and power the board
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Specifications