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int ledPin=13;
int analogPin=0;
void setup()
{
// The included LED of the Arduino (Digital 13), will be used as output here.
pinMode(ledPin,OUTPUT);
// Serial output initialization
Serial.begin(9600);
Serial.println("Heartbeat detection example code");
}
const int delayMsec = 60; // 100msec per sample
// The main program has two tasks:
// – The LED will light up after detecting a heart beat
// – Calculating of the pulse and outputting of it at the serial out.
void loop()
{
static int beatMsec = 0;
int heartRateBPM = 0;
Serial.println(rawValue);
if (heartbeatDetected(analogPin, delayMsec)) {
heartRateBPM = 60000 / beatMsec;
// LED-output for the heart beat heart beat
digitalWrite(ledPin,1);
// Output of the serial data
Serial.print(rawValue);
Serial.print(", ");
Serial.println(heartRateBPM);
beatMsec = 0;
} else {
digitalWrite(ledPin,0);
}
delay(delayMsec);
beatMsec += delayMsec;
}Рекомендуемые ссылки:
From KY-039 To Heart Rate | Arduino Project Hub
From KY-039 To Heart Rate – Hackster.io
Sensor Wiki: KY-039 Heartbeat Sensor – The Geek Pub
KY-039 Heartbeat sensor – SensorKit
Using the Heart Beat Sensor KY-039 with Arduino – Phipps Electronics