We are pleased to share with you the details of our innovative engineering project that combines technology and vital medical services, designed to provide smart and accessible healthcare: (Heart Rate & Blood Oxygen Sensor) This project was completed by a distinguished engineering team under the supervision of Dr. Amir Najah Saud. Based on the Arduino system, the device measures two vital indicators crucial to human health: 1. Heart Rate (BPM): to monitor the efficiency and activity of the heart. 2. Blood Oxygen Saturation (SpO2): to ensure the proper functioning of respiratory systems. How does the device work? The device utilizes optical sensing technology. A finger is placed on the sensor, which emits infrared light. By analyzing the light absorbed and reflected by red blood cells, a microcontroller processes the data and displays the results accurately and quickly on a digital screen.