THIS BATCH HAS A MANUFACTURING ERROR THAT AFFECTS FIT ALONE. FUNCTION IS 100% CONFIRMED OPERATIONAL. PURCHASING THIS KIT WILL REQUIRE MINIMAL SHELL MODIFICATION AND PART REMOVAL. PLEASE BE ADVISED. INSTRUCTIONS TO FOLLOW.

Nature of Error: Unfortunately, there was an issue with manufacturing resulting in the boards being thicker than our requested specification. 1.35mm instead of the 1.15mm required of the design. Plastic surrounding the USB-C port will need to be filed and header pins desoldered. 

For more information regarding fixing your kit check out our YouTube Video or fix guide.

For competitive play, just one moment of wireless lag or interference can mean losing the match. The most competitive players will use GameCube controllers because of its reliability in the heat of the moment. On the other hand, the ergonomics of the Nintendo Switch Pro Controller are unmatched and offer a huge advantage in comfort.

This kit has been updated as of September 22nd, 2022. 

Changes made:

• Added software adjustable snapback setting (left stick only)
• Added on the fly Dpad adjustment
• Changed ribbon cable connector for reliability
• Adjusted screw positions on stick PCB
• Improved compatibility with GameCube and Wii hardware for more obscure titles.

This controller is only compatible with GameCube, Wii, and GameCube USB adapters (for Wii U, Nintendo Switch, and PC).

Meet the ProGCC Kit: a drop-in PCB conversion kit which converts the Nintendo Switch Pro Controller to a wired-only GameCube controller.

Features

• Software adjustable snapback (no soldering required!)
• Detachable USB-C to GameCube cable (Included).
• Drop-in installation, no soldering required.
• Supports rumble (use the original Pro Controller rumble or supply your own, soldering required). Enabled by holding "+" and plugging in the USB cable simultaneously.
• Built-in snapback module. Enable this by soldering the appropriate snapback values.
• Breakout pads to solder your own snapback module.
• Compatible with GameCube, Wii, and Nintendo Switch GameCube adapters.
• 4 trigger modes to increase compatibility with GameCube games requiring analog triggers.
• Smash Ultimate Mode - Maps the L button to 'D-Pad left' which allows rebinding in Super Smash Bros Ultimate.
  
• Switch between Nintendo and Xbox 'ABXY' layouts.
• Easily recalibrate sticks and adjust deadzone with built in macros (See user guide).

Included with Purchase

• Button board (white color)
• Main board (red color)
• 2x ribbon cables (one extra in case of damage)
• 1x USB-C to GameCube controller cable (Compatible with other box-style controllers featuring USB-C to GameCube)

Snapback Module

As mentioned, this controller has a built in snapback module, adjustable using some solder jumpers. If you prefer using switches to quickly adjust your snapback values, we have an optional Snapback board which is designed to fit in the battery compartment. See the store link below:

Pro Controller Snapback Module

Build Your ProGCC
We have a small collection of generic Pro Controller parts to get you started.
See our shopping guide for all the parts you'll need to build a controller!

Documentation

• GitHub page with schematics for repairs and source code
• Install Guide
• User Guide

Thanks to @iamyan688 on Twitter for allowing us to use his image. 

Thanks to @ShinyMark1 on Twitter for allowing us to use his video.