The Macgyvilator disaster ventilator Mk2! (3/25/2020) Now with validated respiratory parameters.

In response to feedback and suggestions from Mk1 (thanks everyone!), I made some changes and threw together the Macgyvilator disaster "ventilator" Mk2. It's more capable than Mk1, and more importantly, I've validated its output with a respiratory flow meter. As built, it delivers a max tidal volume of ~460 mL and an I:E ratio of ~1:2.7, which is a helpful output according to my respiratory and critical care colleagues. To be clear, this is not a substitute for a real ventilator! This is mandatory ventilation only; the lack of a breath trigger is probably its biggest weakness. It's one step above prolonged hand-bagging, and it's meant to be a base for further tweaking/building. Parts list is here: https://docs.google.com/document/d/1P... Assembly video is here:    • Macgyvilator disaster "ventilator" assembl...   Please help me spread this project to those who have interest and/or need. Those of you affiliated with healthcare, especially outside of the USA, this means you! This is open source and free for use, but please do not try to profit from this design if you use it. My email address is [email protected]. You can also find me on LinkedIn and Twitter. Please feel free to reach out with questions; I'll do my best to keep up. Stay safe and be well! #macgyvilator #ventilator #covid19 #coronavirus