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Teensy (ATmega32u4 USB dev board) 2.0 [ATmega32u4] (Adafr... | Little Bird
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I am working on a USB c powered atmega32u4 based macropad. Will this work? : r/avr
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hardware - Programming a Atmega32U4 via USBASP - Stack Overflow
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USB Serial firmware for ATmega32U4 | A Mutable Log
