Quoted from ForceFlow:MIT's plans for a $100 ventilator:
https://scitechdaily.com/mit-posts-free-plans-online-for-an-emergency-ventilator-that-can-be-built-for-100/
That would be awesome. Here’s an interesting article on why the US never built the ventilators we’d planned to:
The U.S. Tried to Build a New Fleet of Ventilators. The Mission Failed.
https://www.nytimes.com/2020/03/29/business/coronavirus-us-ventilator-shortage.html?referringSource=articleShare