The Arduino-Powered Breath Control Machine

Important: I will not provide detailed instruction on how to build a breath control machine. This page has a diagram and some parts, and if you have enough knowledge to build one, go for it. If you don’t, please don’t.

I have constructed my own electronically powered breath control machine, based on the open Arduino microprocessor family.

Basic structure of the machine?

The following is a diagram of the structure of the machine:

The machine has two valves.

Valve #1 has two positions: 1) Passthrough, air is coming through the rebreathing/fresh air circuit; 2) Poppers, fresh air is coming directly through the poppers container, no air is going through the rebreathing/fresh air

If Valve #1 is in the “poppers” mode, position of Valve #2 is meaningless since air is not going through it.

Valve #2 has two positions: 1) Fresh air, user is getting fresh air from valve #2; 2) Rebreathing, user is getting used air from the rebreathing bag.

Regardless of the positions of the valves, all used air from the user goes to the rebreathing bag. Overflow of used air leaks out through the regulation valve.

The valves are controlled with 12 v direct current, by a relay board attached to the Arduino.

What electrical components do I need?

Amongh others, the following are the components used:

What gas mask should I use?

Any gas mask with separate intake and outlet valves will do. For example this one:,showdetail,1496682195-15855,e,1496682202-16008,masken.masken_gasmasken,41019,,Tshowrub–masken.masken_gasmasken,.htm

How can I make it safe?

You can’t. First of all, Arduino is not a suitable platform for life critical applications. Second, if you leave anyone alone with a breath control machine, expect a homicide charge.

2 replies on “The Arduino-Powered Breath Control Machine”

Hey Trikoot!
Thanks for the great writing and schematics on the breathplay machine!
I have to say I’m very interested to build one myself. I have experience in the software programming part and a bit in the electronics part but I have to say I don’t know anything about the tubing part.
What did you use for that, and which diameter is best in your opinion?
Furthermore, how did you connect tubes to the valves and the gasmask in/outputs?
Thanks for the help, it’s very much appreciated!

Hi Trikoot. Nice site. I can’t find a gasmask with an inlet and outlet connector for hoses. Can you suggest a gas mask type which would work? The blackstyle site you link to doesn’t seem to have one any more

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