Hacker News Reader

I’m very excited about trying rust on these devices. Are there any examples out there of projects using this in a more or less mature shape?

Yes! The training developed with Ferrous Systems (https://esp-rs.github.io/std-training/) contains several examples, and you can find many community projects in https://github.com/esp-rs/awesome-esp-rust#projects

Afaik there while there are some OSS projects they aren't necessarily mature.

The no_std hal is still a bit of a moving target so it's not as beginner friendly, the most mature here seems to be the SlimeVR firmware: https://github.com/SlimeVR/SlimeVR-Rust/tree/main/firmware

For std hal there are a few more, OFMon being a good one: https://github.com/arashsm79/OFMon