Recently, I started receiving lot of emails, asking for details about the oxygen concentrator machine. I hope this video will help you to build your own, if you need help, write a comment.

Disclaimer: I take no responsibility for how you use the machine. This is not a machine designed for medical purpose, you do all at your own risk.

Resources:
Principle: https://en.wikipedia.org/wiki/Oxygen_...

Original concentrator: Invacare Platinum

Compressor manufacturer: Thomas

5/3 valve type: Festo MN2H-5/3G-D-01
one-way valve: FESTO H-1/4B NON-RETURN VALVE

Molecular sieves: JLOX-101 from https://www.molecular-sieve.cc/
the humidity of the air during installation should be less than 50%, and the temperature should be 10-40 degrees Celsius

Controllino Mini:
https://www.controllino.com/product/c...

Controllino board setup in Arduino IDE:
https://www.controllino.com/knowledge...

Code for the Controllino:
https://www.dropbox.com/s/9ig02dadi1l...