As I am old enough to remember hard disk access lights on everything, having a heartbeat indicator like this makes me feel warm and cuddly when working on a headless application. Sometimes you just need to know the project is doing something before you start looking for or firing bugs in your program. — Douglas
A simple way and example of how you are able to add a visible heart beat indicator into your sketches to show they are alive & kicking.
An interesting link found among my daily reading