The Vaavud wireless wind meter is used with an iOS device or Samsung smartphone. It uses two small magnets in the rotor to connect to the device — no electronics. The phone’s built-in magnetic field sensor detects when the magnets rotate and converts the rotations to wind speeds using algorithms. Vaavud is compatible with all iOS devices and Samsung Galaxy SII, SIII and S4 phones. It retails for $50 at www.vaavud.com.
November 2013 issue