propeller / anemometer

thingiverse

An anemometer or propeller can be mounted on an axis to measure wind speed and other related parameters, or simply used for educational purposes. To print this device, use a 20-30% infill and attach it to an axis before placing it in a windy environment. The OpenScad file is included, allowing you to customize the number of arms by changing the value of "N=3; // number of blades" at the top of the code. Note that the file is annotated in French.