The Tamagotchi Paradise runs on a 32-bit ARM microcontroller, and a CH340G USB-to-UART adapter costing a few dollars is enough to crack it open. Builder Squalius wired three pins to nickel strips threaded through a custom 3D-printed enclosure, creating a pogo-style contact that fits the device's proprietary dock port, the same port normally used for Tamagotchi-to-Tamagotchi linking.
That dock port, once spoofed, hands over full control. Squalius demonstrates a live browser-based tool running in Google Chrome talking directly to the hardware over the UART connection. Beyond in-game manipulation, the interface allows complete firmware replacement. The video shows Super Mario and DOOM running on the handheld.
The full build video is worth watching for the wiring detail and the Chrome Web Serial API integration, which makes this accessible without custom software. Tamagotchis have attracted hardware hackers since the late 1990s, but the jump to ARM silicon means the modern versions are a far more capable target. The same dock port is on every Tamagotchi Paradise unit sold.
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