Keyes Heartbeat

內容

  1. 1 Keyes Heartbeat
    1. 1.1 Hardware and Software
    2. 1.2 Sanki Notes
  2. 2 Examples

    This page is to Setup and Config Keyes Heartbeat
 

Hardware and Software

Hardware 
    Keyes Heartbeat 

Software 
    Arduino IDE


Sanki Notes

  • Keyes Heartbeat; unplug and plug again when pload by Arduino IDE (For Reset) 

Examples

          This example is  Work and Fine
  1. /*
    This example will show you how to use the KY-039 heart bear sensor.
    Its a simple basic heart beat monitor with a LCD1602A. In this example i did not use a I2C for those who dont have it.
     */

       double alpha=0.75;
       int period=20;
       double refresh=0.0;
       
    void setup(void)
    {
      Serial.begin(9600);
       pinMode(A0,INPUT);

    }

    void loop(void)
    {
       static double oldValue=0;
       static double oldrefresh=0;
     
       int beat=analogRead(A0);
      
       double value=alpha*oldValue+(0-alpha)*beat;
       refresh=value-oldValue;
      

       Serial.print(" Heart Monitor "); 
       Serial.print("          ");
       Serial.println(beat/10);
       oldValue=value;
       oldrefresh=refresh;
       delay(period*10);

      
    }