Excuse me sir, i have a problem with my arduino nano project. i use heart rate sensor (MAX30100) and oled lcd here. But program not work after power on, oled lcd is on but sensor not read. The program will work properly if i reset arduino or open serial monitor. Any solution for this problem?
Something is probably wrong with your program, your wiring, your power supply or the components that you are using.
Do you think that it might help if you gave us details of each of those things ?