OpenGills is an open source ventilator garage project created when US lockdown due to Covid-19 in April 1st week of 2020. This project was inspired by these three university projects:
1) University of Florida, Gainesville. https://simulation.health.ufl.edu/technology-development/open-source-ventilator-project/
2) MIT E-Vent http://e-vent.mit.edu
3) Rice University ApolloBVM – Emergency Use Ventilator https://youtu.be/1t2t8d8xtD0