Thank you for your reply !
I understand the problem with the activitie of Android. Thanks for the explanations !
In the same time, I already have developped my own Android app... It's very interresting !
Ok it's not as clean as yours (All setings are hardcoded now) but it's under development.
For the timings, I implement them in the arduino and not on Android. it's the testing for each roller blind that fixes the values for 50% close. But the command must exists on the App.
I will continue to have a look on your App, it's useful !
A+