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Arduino Leonardo Pinout, ATmega 32U4 Pin Mapping, Schematics, EAGLE Files, and More! - Documents - Arduino - element14 Community
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Pinout Reference for Adafruit ATMega32u4 Breakout « Adafruit Industries – Makers, hackers, artists, designers and engineers!
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Amazon.com: OSOYOO Pro Micro ATmega32U4 5V/16MHz Module Board with 2 Row pin Header Replace with ATmega328 Pro Mini for Arduino : Electronics
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