OMYXAir is an extremely simple but sophiticated Respiratory system: An Open Source, Low Tech, Low Cost Ventilator
Picture of the complete system :
The System can be monitor by a PC (Linux-Windows-MAC) or Rpi or any other Linux Board, the interface is shown below:
This project is under [CERN-OHL-S v2 or ater] (https://ohwr.org/cern_ohl_s_v2.txt) for Hardware, [GPL-v3] (http://www.gnu.org/licenses/gpl-3.0.txt) for Software, and [Creative Commons Zero] (https://creativecommons.org/publicdomain/zero/1.0/legalcode.fr) for Documentation