This wokshop was organised for The ATAST association (Association Tunisienne pour l’avenir des sciences et Technologie). This association is participating in a lot of international competition in STEM field and there is a need to know to program mobile devices. Although I was very sick, we made it. The workshop started at 10PM et finished the next day at 1:30. The cool thing about ATAST member is that they learn very quickly and eager to spread what they learn.