First of all thanks for reply,
My hardware parts are :
1-) Waveshare brand 1.3 inch oled screen
2-)Pulse sensor, here is the link : Pulse Nabız Ölçer Satın Al | Robotistan
3-)Arduino nano, atmega 328
I want to transfer the heartbeat diagram to the oled screen.
I can print the serial plot heartbeat diagram but I can not reflect it on the oled screen.
Thats my problem,i hope i can explain my problem