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Mini USB ATmega32U4 Pro Micro 5V 16MHz Board Module - Robotools
ATMEGA32U4-AU Microcontroller: Schematic, Pinout, and Datasheet
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schematics - Connecting USB-C port with ATmega32u4 - Questions - Electrical Engineering Stack Exchange
microcontroller - How can I program an Atmega32u4 over USB with this schematic? - Electrical Engineering Stack Exchange
Elite-C V4 - USB-C Pro Micro Replacement ATmega32u4 – Keebio
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ATmega32u4 usb powered minimal bootloader and test circuit - Microcontrollers - Arduino Forum
SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - DEV-15795 - SparkFun Electronics
ATmega32u4 usb powered minimal bootloader and test circuit - Microcontrollers - Arduino Forum
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ATmega32u4 usb powered minimal bootloader and test circuit - Microcontrollers - Arduino Forum
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ATmega32U4 Pro Micro Controller for Arduino Micro USB or USB-C 5V 16MHz | eBay
