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Amazon.com: SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - Compatible with Arduino development board 5V/16MHz microcontroller AP2112 3.3V Voltage Regulator Castellated PTH pin pads Reset button Maximum 6V input : Electronics
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Pro Micro Atmega32u4 5v 16mhz Replace Atmega328 For Arduino Pro Mini With 2 Row Pin Header For Leonardo Mini Usb Interface - Integrated Circuits - AliExpress
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