Alguém já saiu na frente e montou instância própria usando raspberry pi 4.
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I'm running my own Mastodon server on a Raspberry Pi. Here's what I've learned | ZDNET
https://www.zdnet.com/google-amp/article/im-running-my-own-mastodon-server-on-a-raspberry-pi-heres-what-ive-learned/