Sparkfun Wind Vane

The wind vane is a precise instrument designed to indicate wind direction. It features eight internal switches, each paired with a unique resistor. As the vane rotates, a magnet activates these reed switches, sometimes closing two simultaneously due to their proximity. By incorporating an external resistor, users can create a voltage divider that, when paired with an analog-to-digital converter on a microcontroller, determines the wind direction. The output will vary depending on the external resistor, allowing for customizable direction readings.

The wind vane's versatility makes it ideal for various applications, from hobbyist weather stations to educational projects. By integrating it with a microcontroller, users can monitor wind direction in real-time, making it a valuable tool for environmental data collection and analysis.

A notable benefit of this wind vane is its adaptability. Users can assign any value to represent any direction, though it is recommended to set degree 0 as North for simplicity. This flexibility allows for tailored setups that fit specific needs or preferences.

The device includes subtle directional markers on all four sides, aiding in accurate installation and positioning. Ensure these markers are correctly oriented to ensure precise readings. Remember, the vane points in the direction from which the wind originates, offering clear insights into wind patterns.