Wind Direction Sensor FX-100

FX-100 is a high strength carbon fiber based industrial quality wind direction sensor also called as wind vane.

The wind direction sensor has high quality light metal body which responds to even the slightest wind the sensor has high resolution and accuracy.

The sensing element of the FX-100 wind direction (magneto-resistive) sensor consists of a  rotating magnet shaft and a magnetically sensitive sensor. When the wind vane rotates due to wind it is rotated on a magnetically sensitive core by the magnetic shaft and this produces a linear output voltage.

The output of this sensor is analog voltage from 0 to 2.5 volts depending on the wind direction. This voltage can directly be measured using Analog pins of Arduino or any Micro-controller with internal ADC. You can also interface it to Raspberry Pi using External ADC.

Formula for Wind direction:

                                         D=359° ×(V /2.5)

Where D is the wind direction in Degrees

and V is the output voltage in volts of the sensor

This wind direction sensor can be used with wind speed sensor to make your own Weather Station.

Features of FX-100 Wind Direction Sensor

• Measuring range : 0 to 359°

• Accuracy : ±1.5°

• Resolution : 1°

• Starting wind speed : =0.5 m/s (meters per

• Power supply : DC 5 Volts

• Output Voltage : 0 to 2.5 Volts

• Instrument line length : Standard : 2.5 meters 

• Working environment : Temperature -40 °C ~ 50 °C Humidity = 100% RH

• Protection level : IP65

• Product material : ABS plastic with anti-flame retardant material

• Power Consumption : 2.5-3 mWatt

The Sensor has a 3-core aviation plug at the bottom, and the output is three-wire

1. Red wire : Power

1. yellow wire : Output signal

1. Black wire : Ground

The sensor has good linearity and lightning resistance.It is stable and reliable and can be widely used in meteorology, oceans, environment, airports, ports, Laboratory, industry and in agriculture field.

NOTE : this is not a plastic body wind vane for your hobby/academic project this is a Industrial Grade carbon fiber based wind sensor which and can be used for practical application to make your own weather station.