Wind Speed Sensor 0-5V Transmitter Anemometer

Connection Diagram:

Please make the external power (DC 9-24V) and the wiring to Arduino in the same ground, i.e. connect GND to Arduino as well as to external power’s GND. In the diagram, it was not indicated out.

Sample Code:

/*
Connect the voltage signal wire to Arduino analog interface:
Yellow Cable<---->A0
*/

 void setup()
 {
   Serial.begin(9600);
 }

 void loop()
 {
   int sensorValue = analogRead(A0);
   float outvoltage = sensorValue * (5.0 / 1023.0);
   Serial.print("outvoltage = ");
   Serial.print(outvoltage);
   Serial.println("V");
   int Level = 6*outvoltage;//The level of wind speed is proportional to the output voltage.
   Serial.print("wind speed is ");
   Serial.print(Level);
   Serial.println(" level now");
   Serial.println();
   delay(500);
 }