Now we had the principal mechanism of our project, we have to think about how to manage the opening of the box, the outside part. The first idea we had was to open it thanks to a key or un button but we realised that it was too ambitious for the two of us. We don't know anything about mechanic and we judge that it would take too much time to try something like that.

We ask some advices to our teacher and he encourages us to use another servo for the rotation of the top.  So we go through this idea.

We think a lot of how we can succed on this task and it was more difficult than the first monture. One of our mate of the class uses a sensor to make an automatic trash can so we got inspired thank to him to use a sensor (but he changed his project after that) . 

After coding and assembly the Arduino thanks to our new skills,

the servo was spinning even if we didn't activte the captor. 

we fixe this problem by changing the arduino card which was defaulter.