Electronics > Projects, Designs, and Technical Stuff
Ventilator made from car parts
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james_s:

--- Quote from: Circlotron on April 07, 2020, 02:52:19 am ---That's not good of course, but at least better than many people becoming landfill instead.

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Donate them to a developing nation. There are many parts of the world that are not encumbered by the regulations in more "civilized" regions where they are currently getting by with much less.

I don't really understand the attitudes some have about this stuff, companies are stepping up to the plate and taking action that could save thousands of lives and people crap on the whole idea with what-ifs. When there's an adequate supply of certified machines to meet the demand then we can stop building stopgap hardware. Until then you do what you gotta do. Then moaning about a company getting some publicity? So what? If they accomplish anything at all they deserve some publicity, I'd ask of the armchair experts complaining what are *you* doing to increase the supply of needed ventilators?
Simon:

--- Quote from: drussell on April 07, 2020, 02:25:54 am ---
--- Quote from: wraper on April 06, 2020, 03:21:37 pm ---
--- Quote from: SiliconWizard on April 06, 2020, 03:16:28 pm ---Agreed.
Focus on helping existing production units ramp up production, not on reinventing the wheel.

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Spacex produces valve for Medtronic. Also you cannot simply start making components sourced from various manufacturers. You'd need to design an alternative component and build production line first. (Talking about reinventing the wheel).
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There are many components that can be produced reliably on "prototype-style" equipment, like CNC machining individual parts on generic machines instead of on a regular "production line."  If some generic equipment that is sitting idle can be put to use producing parts and pieces, fab some PCBs and assemble them with components, etc. on some additional production line, even if it is small-quantity production, if some auxiliary production lines here and there can produce high quality, repeatable parts, that would probably actually be the most helpful in the end.

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CNC's are not prototype equipment. They are used for production. Their advantage in prototyping is that they do not need part specific tools making but for some items in large volumes there are faster cheaper ways of making them like casting or a combination of casting and finishing on a CNC. My employer has the equivalent of die cast boxes CNC machined all the time as we can achieve shapes and features you can't get on a commercial box and it is still competitive.
bd139:
Indeed. Not only that, CNC machines are used to finish production cast parts for example as well like engine blocks and to mill new parts like crankshafts.
Simon:
Yea, anything needing good torque properties will be lathed from extruded bar, a cast shaft would be more likely to shatter.
Psi:

--- Quote from: SiliconWizard on April 06, 2020, 01:20:45 pm ---
--- Quote from: madires on April 06, 2020, 11:00:27 am ---Unfortunately all those quickly hacked together ventilators will become e-junk after we'll have survived the corona virus, because none of them will get a standard approval. All they get is a temporary emergency permission.

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I'm waiting to see if they'll even get that.

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Even if the DIY stuff never gets temporary approval. The doctors and healthcare staff wont care, they will still use it.
All those DIY home laser cut and 3D printed face shields people are making aren't tested/approved but they're still being used in hospitals all over the place. With medical staff very happy to have something vs nothing.

If no medical ventilators are available but 10 people need one to make it through the night the medical staff will use whatever they can get ahold of. Even if it's not approved or not even medical equipment at all.

The typical rules, where hospitals won't try anything risky for fear of getting sued, are ignored in situations like this.
There's only so many times you can turn up to work and see people die because you don't have the gear to save them before you stop caring about company policy or rules in general.

If anyone from a hospitals legal team turns up in the ER saying.."You can't use that, it's not approved" they're likely to get punched in the face at best, or end up getting drugged, tied up and forgotten about in a utility room at worst.
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