Hi, I'm making a heart rates in arduino UNO R3, with a MAX30102 to measure heartbeat and blood oxygen level, a display LCD, and HC-05 (bluetooth) to transfer data to app. I want the measurements to apper in the app and store them every time I measure, like a database. But I don't know how to make the code, and I could't find it.
Can someone help me please.
thats the screen of the app, I'm brazilian, that's why it's in portuguese.
and thats the code I've already made