Hello World Arduino Sketch vs Atmel Studio IDE Many people want start to learn the hardware programming and actually there are many way for do it. This post was designed for that students than only know Arduino as the their maximum tool and this limit their perception about that. It's probably because Arduino give more easily the programming possibility with its libraries and its own sketch. But it also avoid the knowledge about the micro-controller function. Surely if one student take one micro-controller datasheet he don't have an easy understanding about its peripherals and how each register works in its settings. Arduino isn't completely bad, one student can to start his learning with this development platform (currently an editor code) and after understand how it works and consequently he will wish programming in an other and more professional development platform. Normally, many website and blogs you can to find many "Hello world" tutorials, but this