I introduce to you my second project for my university. This project can be used to monitor heart beat rate and oxygen levels using the MAX 30100 module and print them to the Nokia 5110 LCD. It also stores these values in a text files using an SD card module. It also gives a warning buzzer sound in case of the values being off the normal needed values according to your age, Which you can enter using the capacitive TTP 229 16x button pad. It also uses the I2C communication function to send these values from one Arduino to another.”