During the shelter, Professor Dally led the development of an open-source, proportional solenoid valve ventilator – OP-Vent – that can be built for around $400.
Following is a video of the ventilator:
Hoping that this ventilator will be of great use both in poor countries that have no ventilators and rich countries that are in urgent need of more ventilators.
Note: The picture above is the OP-Vent ventilator.
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