1. Alimentación:
   • Conectar U1:VDD al pin U2:3V3.
   • Conectar U1:GND al pin U2:COM/GND.
   • Conectar U1:VLED+ al pin U2:3V3.
   • Conectar U1:PGND al pin U2:COM/GND.
2. Comunicación I2C:
   • Conectar U1:SCL al pin U2:A5.
   • Conectar U1:SDA al pin U2:A4.
   • Dejar los pines NC del sensor flotantes (sin conexión).

• Conectar LED1:A al pin U2:D6.
• Conectar LED1:K a una resistencia de 500 ohmios (R1) y luego conectar el otro terminal de la resistencia a U2:COM/GND.

• Conectar BZ1:+ al pin U2:D5.
• Conectar BZ1:- a U2:COM/GND.

Cpp
#include <Wire.h>
#include "MAX30105.h"
#include "heartRate.h"

MAX30105 particleSensor;

const int ledPin = 6;
const int buzzerPin = 5;
const int thresholdBPM = 100; // Umbral de frecuencia cardíaca

void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);

  // Inicialización del sensor
  if (!particleSensor.begin(Wire, $I2C_SPEED_FAST$)) {
    Serial.println("MAX30105 was not found. Please check wiring/power.");
    while (1);
  }

  particleSensor.setup();
  particleSensor.setPulseAmplitudeRed(0x0A); // Configuración del sensor
}

void loop() {
  long irValue = particleSensor.getIR();

  if (checkForBeat(irValue)) {
    float beatsPerMinute = getBeatsPerMinute();
    Serial.print("BPM: ");
    Serial.println(beatsPerMinute);

    if (beatsPerMinute > thresholdBPM) {
      digitalWrite(ledPin, HIGH);
      digitalWrite(buzzerPin, HIGH);
    } else {
      digitalWrite(ledPin, LOW);
      digitalWrite(buzzerPin, LOW);
    }
  }

  delay(20);
}

• Conectar U1:VDD a U2:3V3.
• Conectar U1:GND a U2:COM/GND.
• Conectar U1:VLED+ a U2:3V3.
• Conectar U1:PGND a U2:COM/GND.
• Conectar U1:SCL a U2:A5.
• Conectar U1:SDA a U2:A4.
• Conectar LED1:A a U2:D6.
• Conectar LED1:K a R1:1, y R1:2 a U2:COM/GND.
• Conectar BZ1:+ a U2:D5.
• Conectar BZ1:- a U2:COM/GND.