Mahdi Hajebi
Published

Prevention of heart attack

Heart attack is killing over 375,000 Americans every year. and this project wants to stop this.

IntermediateFull instructions provided10 hours15,591
Prevention of heart attack

Things used in this project

Hardware components

Arduino 101 & Genuino 101
Arduino 101 & Genuino 101
×1
SparkFun Logic Level Converter - Bi-Directional
SparkFun Logic Level Converter - Bi-Directional
×1
Grove Starter Kit for Genuino / Arduino 101
×1
Max30100 heart rate sensor
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

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Schematics

llc_MuOqHDsKGL.jpg

Code

Prevention of heart attack

Arduino
#include <Wire.h>
#include <MAX30100_PulseOximeter.h>
#include <rgb_lcd.h>
#include <Stepper.h>

#define REPORTING_PERIOD_MS     1000
#define stepsPerRevolution  200
#define key 8                                          // key digital pin
#define buz 4                                          // buzzer digital pin
#define LHB 30                                         // critical lowest heart rate
#define HHB 100                                         // critical highest heart rate

Stepper myStepper(stepsPerRevolution, 2, 3, 4, 5);
rgb_lcd lcd;
PulseOximeter pox;
uint32_t tsLastReport = 0;

///////////////////////////////////////////////////////

void setup() {
  pinMode(key,INPUT);
  pinMode(buz,OUTPUT);
  myStepper.setSpeed(100);
  lcd.begin(16,2);
  pox.begin();
}

///////////////////////////////////////////////////////

void loop() {
  pox.update();                                                  // geting new data from heart rate sensor
  if (millis() - tsLastReport > REPORTING_PERIOD_MS)
  {
    LCDwrite();                                                    // showing data on LCD
    LCDcolor();                                                    // choosing LCD's backlight color
    inject();                                                      // inject drug if situation is dangerous
    tsLastReport = millis();
  }
  buzer();                                                         // sound the alarm if the button is pressed or situation is dangerous
}

///////////////////////////////////////////////////////

void LCDwrite(){
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("HEART:: ");
  lcd.print(pox.getHeartRate());
  lcd.setCursor(0,1);
  lcd.print("SPO2:: ");
  lcd.print(pox.getSpO2());
}

void LCDcolor(){
  if (LHB<pox.getHeartRate() and pox.getHeartRate()<HHB)        // dangerous situation
    {
      lcd.setRGB(0, 0, 255);                           // blue backlight
    }
    
  else
    {
      lcd.setRGB(255, 0, 0);                         // red backlight
    }
}

void buzer(){
  // dangerous situation or pressed button
  if ( digitalRead(key)==HIGH or pox.getHeartRate()<LHB or pox.getHeartRate()>HHB)
    {
      digitalWrite(buz,HIGH);
    }
  else
    {
      digitalWrite(buz,LOW);
    }
}

void inject(){
  if (pox.getHeartRate()>HHB)                          // dangerous high heart rate
    {
      myStepper.step(2075);                              // spin 1 round and inject drug
    }
}

Credits

Mahdi Hajebi

Mahdi Hajebi

3 projects • 17 followers
studying mechanical engineering at hormozgan university.

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