Turn on LCD

Hello everyone. I have a problem with this project … the display does not turn on … what link I wrong?

RenzoDP: Hello everyone. I have a problem with this project ... the display does not turn on ... what link I wrong? https://www.dropbox.com/s/sahmakorr35guxp/electrocardiographe_bb.png?dl=0

Do you really expect us to join Dropbox in order to look at your code?

Take a look at this --> How to use this forum - please read and then try rephrasing your question.

Don