Nexus 5 anemometer

thingiverse

Printable Anemometer Clips onto cell phone; designed for Nexus 5 but easily modifiable to fit different phones. Phone detects rotations of added rare earth magnet. Beginnings of an Android app for reading meter can be found here: https://github.com/berkenbu/Anemometer Instructions Print the following: anemometer_phone_mount anemometer_top_rotor anemometer_rotor_bottom anemometer_magnet_holder Also required are: Magnet - used an 8mm diameter cylindrical rare earth magnet from hardware store Ball bearing - used a 6mm OD, 3mm ID one from toy helicopter Axle - used a 3mm dia machine screw with head removed Phone holder has a 6mm diameter hole for installing a small ball bearing. Adjust this if different bearing is being used. Used a 3mm machine screw as axle, and matching nuts and washer to sandwich the bearing in place. The rotor and magnet holder simply screw on. Could be improvised with other materials... Split the main rotor into two parts to print it without supports: top three bottom cup segments are glued onto the top. The app is still a work in progress and can be found on GitHub - at this time, it will display RPMs of the rotor and scrolling recent history graph, but not actual wind speed. Calibrate for accurate measurements using existing, calibrated anemometer or source of known, constant wind speed. App was written in Android Studio and compiles without additional libraries; a pre-compiled APK is also available in 'app' folder.