![]() ![]() The Rev C Wind Sensor is now available through our UK-based partner Digital Smarties. If higher levels of precision and stability are required, take a look at the Wind Sensor Rev. The Arduino calibration sketch (link below) is premised on a regulated five volt supply, so the sketch won't work accurately at other voltages. The latest version of the sensor, with a more accurate op amp, runs fine between four and five volts, but it will not work at higher voltages. It has five pins, three signal pins plus power and ground. Possible applications include human breath detection, room occupancy detection, HVAC system monitoring, weather stations and many more. As an experimenters tool, the sensor is exquisitely sensitive, with a small puff of air being sensed at a distance of 18-24". ![]() The hot wire technique excels at low to medium wind speed, and is the preferred technique for sensing indoor air movement, where the spinning cup anemometers typically seen on weather stations are ineffective. The wind velocity is proportional the heat (i.e. It is a thermal anemometer based on a traditional method for measuring wind speed called “hot-wire”. This technique involves heating an element to a constant temperature and then measuring the electrical power that is required to maintain the heated element at temperature as the wind changes. C is a low-cost anemometer with an analog output, designed for use with electronic projects. We are excited to offer the first small, affordable air flow sensor suitable for electronic experiments and integrated applications alike. ![]()
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