[porlw]

There is an interesting series of videos on Youtube about harvesting energy from gutter flow: https://www.youtube.com/watch?v=S6oNxckjEiE

[dalemyers]

I've been watching this and I'm quite impressed at the lengths he has gone through to make this work. Designing and creating a custom alternator is definitely one of the more impressive things I've seen in engineering videos on YouTube.

[TamDenholm]

ive been enjoying this video series, i especially liked the video where he built his own alternator from scratch, i found it extremely educational.