Three Corroded, Bug-Infested WiiMotes Yield One Working Controller — Here's How

A time-honored tradition in electronics repair is turning a pile of broken devices into one working unit, and enthusiast eWastelander has applied this approach to three heavily corroded and bug-infested WiiMote controllers salvaged from a box of e-waste. The controllers had suffered from leaking alkaline batteries, insect infestation, and general corrosion, leaving the question of whether at least one functional unit could be assembled from the wreckage.

The task was complicated by the fact that the printed circuit boards in these WiiMotes spanned at least two hardware revisions. On one board, the battery corrosion had been so severe that an integrated circuit had literally fallen off. After an initial assessment, the first step was neutralizing the battery acid and performing a deep clean of all disassembled components. Only then could the attempt at reassembly into something resembling a usable Wii controller begin.

The goal was not just functionality but also hygiene — a controller you could actually use and want to touch without washing your hands afterwards. The process involved careful selection of the best-preserved components from the three units, accounting for the hardware revision differences and the missing IC on one board.

Ultimately, at least one working WiiMote was successfully assembled. The remaining two controllers, in significantly worse condition, present an open question about whether they can be revived in some form. One interesting idea proposed by the repairer is to repurpose the WiiMote shells for a custom OpenMote board, replacing the original internals with an ESP32-S3-based system for more general non-Wii applications around the house. This would give the corroded shells a second life as smart home controllers or other DIY projects, far removed from their original console duties.