I’ve built a few things like this using Nerves / Elixir on a pi. It’s got a really nice dev experience through to useful deployment and over-the-air updates. I

I’ve built a few things like this using Nerves / Elixir on a pi. It’s got a really nice dev experience through to useful deployment and over-the-air updates. I highly recommend it to anyone building little functional prototypes of this sort.