You can start from Wiki

Project File Contents

• Codes
  • MEGA
    • MEGA.ino
  • ESP
    • ESP.ino

• Datasheets
  • AD8232.pdf
  • ATMega328P.pdf
  • ArduinoUno.pdf
  • Breadboard.pdf
  • DHT11.pdf
  • ESP8266.pdf
  • LCD.pdf
  • LED.pdf
  • LM35.pdf
  • PulseSensor.pdf
  • Resistor.pdf

• Whitepaper
  • 2019-01-15.jpeg
  • 2019-01-22.jpeg
  • 2019-01-29.jpeg
  • 2019-02-05-1.jpeg
  • 2019-02-05-2.jpeg
  • 2019-03-07-1.jpeg
  • 2019-03-07-2.jpeg
  • 2019-03-07-3.jpeg

• Libraries
  • Adafruit_Sensor-master.zip
  • CH34x_Install_Windows_v3_4.EXE
  • DHT_sensor_library.zip
  • LiquidCrystal_I2C.zip
  • wire.zip

• Links.md

• iot_based_healthcare_system.ino

Project Components:

Components
Arduino UNO Board
ESP8266 Wi-Fi Module
Pulse Sensor
AD8232 Ecg module
LM35 Temperature Sensor
DHT11 Temperature and Humidity Sensor
16x2 LCD Module
Resistor 2K
Resistor 1K
RGB LED
Breadboard
Connecting Wires