Raspberry PI do support Python, Node, and most of the programming languages. What you can do is to stream the blockchain.

I do have a sample for that, it is written in TypeScript and Node.js with dsteem library.

https://github.com/superoo7/cn-malaysia

This cn-malaysia bot will comment on post with the tag cn-malaysia but does not contain a minimum threshold of chinese words percentage. You can modify this into upvotes.

I hosted this bot on a 1GB RAM Ubuntu server, and based on PM2 manager, it consume less than 100mb RAM, which should be fine on Raspberry Pi (Pi has 512 mb RAM).