Dual power wind/electric greywater evaporator. I built it for my camp, and experimented with it as a tool for algaeculture. The jamming resistance would be good for a small raceway pond, and for the carbon capture aspect of algaeculture, wind power is a plus.

The frame is CNC cut, including a sliding motor mount/chain tensioner, and I used a reed sensor with long debounce logic to detect wind.