How to make your own raphnet N64 to USB (v3) adapter

Update (2022-10-29): simplified instructions, teensy section, update prices

Update (2021-07-15): removed mention of pullup resistor (internal pullup is sufficient), added mention of screw terminal shields, minor edits


The original raphnet adapter code is designed to run on a custom board based on ATmega32U2. However, a pull request with minor changes made it so it’s possible to compile the code for an ATmega32U4, which is commonplace in many cheap development boards, such as Arduino Leonardo or Pro Micro. This guide will cover the compilation process and hardware setup necessary to turn your board into a fully functional N64 adapter.

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