Show HN: Raspberry Pi WiFi password updater (with QR code)

It's not perfect, but this was a project of mine that I create a while back to share guest wifi with friends who come over and visit. Long story short, a QR code allows a guest to log into wifi. The QR code and password are changed weekly via a cron job, and the whole thing runs on a Raspberry Pi nano.

This setup would only work out-of-the-box on a Ubiquity network as that's what I have, but I tried to document the basic steps it would take if an interested party wanted to replicate this on other hardware. I hope you enjoy!

Note: I don't intend to steal any thunder from the [recent Show HN](https://news.ycombinator.com/item?id=27803146) where a website was created to turn a wifi password to a QR code; I think it's a great project! I just never thought anyone would be interested in this until I saw all the comments on it so now I'd like to share my version :)