How can ı do heartbeat project with a pulse sensor, a buzzer , an arduino nano and lcd. I cannot found any information about this. Please help me
A Google search for "Arduino heartbeat sensor" returns 248,000 hits. Maybe what you need is in there somwhere.
There must be thousands of tutorials for the LCD and buzzer, as well.
The way to approach this project is to get the parts and interface each part, one at a time, to the Nano and write the code necessary to get each part working by itself. Then when you understand how each part works, it will be easier to combine the parts and code together into the finished project.