一、器材

MAX30102

arduino uno

二、接线

MAX30102	arduino uno
VCC	5V
GND	GND
SCL	A5
SDA	A4

三、程序

mixly程序

mixly第三方库瑞龙创客工厂的块

arduino代码

 #include <Wire.h> #include "MAX30105.h" #include "heartRate.h"  MAX30105 particleSensor; const byte RATE_SIZE = 4; //Increase this for more averaging. 4 is good.  byte rates[RATE_SIZE]; //Array of heart rates  byte rateSpot = 0;  long lastBeat = 0; //Time at which the last beat occurred  float beatsPerMinute;  int Bpm_value;  void setup(){   Serial.begin(9600);   particleSensor.begin(Wire, I2C_SPEED_FAST);   particleSensor.setup(); //Configure sensor with default settings   particleSensor.setPulseAmplitudeRed(0x0A); //Turn Red LED to low to indicate sensor is running   particleSensor.setPulseAmplitudeGreen(0); //Turn off Green LED  }  void loop(){   long irValue = particleSensor.getIR();   if (checkForBeat(irValue) == true)     {       //We sensed a beat!       long delta = millis() - lastBeat;       lastBeat = millis();       beatsPerMinute = 60 / (delta / 1000.0);       if (beatsPerMinute < 255 && beatsPerMinute > 20)       {         rates[rateSpot  ] = (byte)beatsPerMinute; //Store this reading in the array         rateSpot %= RATE_SIZE; //Wrap variable         //Take average of readings   Bpm_value = 0;         for (byte x = 0 ; x < RATE_SIZE ; x  )   Bpm_value  = rates[x];   Bpm_value /= RATE_SIZE;       }     }     Serial.print("Bpm_value = ");     Serial.print(Bpm_value);     Serial.println(" bpm");  }

四、效果

打印串口心率