Walker's Easy-Read Anemometer

thingiverse

It took some trial runs to get it up and running smoothly, but I'm pleased with how well it's performing now. After pouring over research papers on anemometer cup shape and design theory, I decided to give the 'wing' type a shot - it's significantly more effective than my previous round-cup setup. This new version also includes mounts for additional cups, although I haven't added those yet, they should really fine-tune things further. The vane fit perfectly, but I ended up ripping mine out and swapping in a bearing from a fidget spinner on the post - it's incredibly sensitive. This anemometer is massive, with a 5-foot circumference, which means the wheel moves slowly enough for elementary and junior high students to easily count the rotations. A helpful chart has been included to translate spins per minute into miles per hour.