I made an Elixir app[1] that worked on RPi and read various sensors, adjusted lighting and was driving some pumps with PWM. I was trying to grow some exotic plants and wanted to automate as much as possible. It was a fun project, the distributed nature of the language/OTP was really neat and when I bought the second Pi for monitoring the inside of a case it was very easy to hook it up with the former Pi and make it into one system.

Unfortunately, all the plants died after a while - mostly because I didn't finish all the features I wanted to write fast enough... - and I abandoned it. I've been considering doing a write up on it since then, but I'm not sure if that would be interesting to anyone other than me.

I wonder, would that count as creative? Maybe I should do the writeup after all (seeing as simply running some PHP on a few Pis got to the frontpage...)

[1] https://github.com/piotrklibert/planties