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atmega328 - Using usb port to communicate with standalone atmega328p circuit - Arduino Stack Exchange
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Problem uploading to standalone ATMega328P by serial/usb - Avrdude, stk500, Bootloader issues - Arduino Forum
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avr - I can't flash my new ATMega328p with PL2303 USB-TTL converter - Electrical Engineering Stack Exchange
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OPEN-SMART DIY ATmega328P Development Board + CH340 Module + Cable USB to TTL Programmer Compatible for Arduino
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How to interface USB to custom Arduino Uno Schematic and programming atmega? - Arduino Stack Exchange
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