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BlueCubeMod

ESP32 based GameCube Controller Bluetooth conversion for Nintendo Switch

v1: Mac/PC/PS4 supported (tested using Dolphin Emulator on Mac, for Switch/RaspberryPi, use an 8Bitdo USB adapter)

v2: Switch support only - no adapter required

Wiring:

Connect pins 23 and 18 to GameCube controller's data pin (Red)
Connect GND to controller's ground pin (Black)

Build instructions(v2):

Use this esp-idf fork here: https://github.com/NathanReeves/esp-idf
Set up the esp-idf environment: https://docs.espressif.com/projects/esp-idf/en/latest/get-started/
Get the BlueCubeModv2 firmware
If you haven’t flashed an ESP32 project before, you need the port name of ESP32 for the config file. If using unix system, to get the port name of a USB device run:

ls /dev

Find your device on the list and copy it. It should look something like: /dev/cu.usbserial-DO01EXOV or /dev/cu.SLAB_USBtoUART
cd into project folder and run:

make menuconfig

Paste your port name into Serial Flasher Config -> Default Serial Port
Compile and flash the program, run:

make flash monitor

Resources used:

http://www.int03.co.uk/crema/hardware/gamecube/gc-control.htm

https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering

https://github.com/timmeh87/switchnotes

Thank you to @Molorius for implementing the bluedroid Classic stack for esp