@Natan said in LED - with peak line - and red warnings...vector version.:
And Dont Want To Screw The Code Up :)
You have to. You will only learn by experimenting, breaking things, and fixing them.
Make a new project, add in the LED meter code, and play with it. When you get stuck, ask for help and show us what you've tried - and I don't expect you to figure it out quickly, it takes time.