it really depends on what you wanna do with ur automation. RPi is better for complex tasks coz it runs a full OS and you can use python which is super handy🐍. If ur just looking to control some lights or other simple on/off devices, Arduino might be the better …
For those asking about risks, as long as you follow guides to the letter, you're unlikely to brick your Wii. Just like HomebrewHero64 said, backup your NAND. There's a big community here and on forums if you need help, so don't worry too much. Homebrewing opens up a whole new …