Modder integrates Switch 2 Joy-Con internals into original Wii Remote shells

Custom Controller Creation

YouTuber Kouzex has created custom controllers by integrating the internal components of Switch 2 Joy-Cons into original Wii Remote shells. These modified controllers are capable of motion sensing, magnetically attach to a Switch 2 console, and are fully functional across various games, including Mario Kart World, Super Mario Galaxy, and Nintendo Switch Sports.

Technical Modifications

The build retained only five key parts from each Joy-Con 2: the motherboard, thumbstick, magnetic rail, battery, and HD rumble motor. The Wii Remote's original circuit board was kept to manage its buttons. Significant modifications were required, including extending ribbon cables for the thumbsticks and battery, and removing internal screw posts from the Wii Remote shells to accommodate the new components. The magnetic rails now also serve to hold the modified cases together.

Button Mapping and Functionality

Button mapping was reconfigured to align with the new setup. The D-pad and minus button connect directly to their Wii Remote equivalents, while the Home button maps to Capture, Plus to a shoulder button, and the rear B trigger to R. Buttons 1 and 2 function as B and A when the unit is held sideways. An attempt to power the Wii Remote's blue player LEDs from the Joy-Con 2's power circuit was unsuccessful due to voltage requirements.

Addressing Thumbstick Drift

The thumbsticks are epoxied only around their outer frames, allowing for easier replacement if drift occurs. This design choice acknowledges that the Joy-Con 2 uses the same potentiometer design as the original Switch, which is susceptible to drift, as confirmed by Nintendo and iFixit teardowns. The 18mm Joy-Con 2 sticks and magnetic attachment were notable changes observed during console testing.