Here is a prototype medical ventilator i built , in 1st 2 weeks of april 2020

https://www.youtube.com/watch?v=2TprOgkN1Dk&t=0s

Part of the display screen was based on my Vipertune since i already wrote the serial data logging and display for my viper servos

Larry Kenny
Viper Servo motor products
Larken Automation