[vc_row][vc_column][vc_column_text][/vc_column_text][vc_tour][vc_tab title=”Interface” tab_id=”1396976781-1-44″][vc_column_text]Wire the signal to one of the ADC pin of Arduino.

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// Pulse Monitor Test Script

int ledPin = 13;

int sensorPin = 0;

double alpha = 0.75;

int period = 20;

double change = 0.0;

void setup()                   

{

  pinMode(ledPin, OUTPUT);

  Serial.begin(115200);

}

void loop()                    

{

    static double oldValue = 0;

    static double oldChange = 0;

    int rawValue = analogRead(sensorPin);

    double value = alpha * oldValue + (1 - alpha) * rawValue;

    Serial.print(rawValue);

    Serial.print(",");

    Serial.println(value);

    oldValue = value;

    delay(period);

}

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