[Fab] went with a simple butterfly valve design, similar to the throttle valve in most gasoline-powered cars. The butterfly vane rotates to vary the flow, turned by a small SG90 servo. A Wemos D1 ...

Finally, the butterfly design makes it easy for the roof to accumulate ... Opting for a mono-pitched roof is a simple ...

Section III explains the design methodology. The implementation results will be presented in the ... However, the logarithmic diameters and simple routing of the butterfly network made it and its ...