#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

byte heart[8] = {
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000
};

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.createChar(0, heart);
  randomSeed(analogRead(0));
}

void loop() {
  int pulseRate = random(60, 100); // Generate a random pulse rate between 60 and 100 bpm
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print((char)0);
  lcd.setCursor(1, 0);
  lcd.print(": ");
  lcd.print(pulseRate);
  lcd.print(" bpm");
  delay(60000);
}