Open source coded Ventilation Device

Hello my friends,
I have done an open source coded arduino based ventilation device.The parts of this project is made at home by hands because I don't have 3D printer so sorry for it.I upload all the things that I handle when I was doing this project very detail.Please comment.

This is the GitHub link GitHub - guneykunt1904/Open-Source-Ventilation-Device: The open coded ventilation device project against the COVİD-19 threat and extreme situtations.

And this is the working video of the project https://www.youtube.com/watch?v=26Hov5GSZLI&feature=youtu.be