...So if anyone know a good way to have time to work on this, please let me know !
The only way I know is using money. That would allow me not to have to work every day of the week and spend this time on my personal projects (I tend to work on them a lot at work, but not as efficiently). So if you know how to get me a good salary (1500€ should do it if I reduce my expenses) to work freely on my projects, please let me know !
I might add a Paypal donation button here, but I doubt it will generate substantial revenue ;)