In recent years, wearable health monitoring devices have gained significant popularity due to their potential to continuously track vital signs and provide real-time feedback to users and healthcare professionals. This project proposes a Smart Blood Oxygen and Heart Rate Monitoring System using Arduino Uno, MAX30100 sensor, LCD display, and Bluetooth module.

The MAX30100 sensor is utilized for its ability to non-invasively measure blood oxygen saturation (SpO2) and heart rate (HR) through photoplethysmography (PPG). An Arduino Uno microcontroller processes the sensor data, which is then displayed on a LCD screen in a user-friendly format. Additionally, a Bluetooth module enables wireless communication between the device and a mobile application, allowing for remote monitoring and data logging.

The main objectives of this project are to design a compact and efficient monitoring system that can accurately measure vital signs, display them in real-time, and facilitate data transmission for further analysis. The system is designed to be low-cost, making it accessible for personal health monitoring applications.

This abstract outline the methodology, components used, and the expected outcomes of implementing such a system. The prototype demonstrates the feasibility of creating a portable and effective health monitoring solution using readily available components and open-source hardware and software platforms.

          The main objectives of the project are:  

1. Designing a system for patients of respiratory problems.
2. Monitoring heartbeat, spo2 on LCD.

          The main building blocks of the project are:  

1. Power supply.
2. Bluetooth module
3.  Arduino UNO
4. MAX 30100
5. LCD display.

        Software’s used:  

1. Arduino IDE studio compiler for dumping program.
2. Express SCH for Circuit design.

          Block Diagram:  

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