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minus-squareCort@lemmy.worldlinkfedilinkEnglisharrow-up3·2 days agoMaybe a refillable liquid nitrogen container so it forces all the oxygen out every time you open it.
minus-squarejet@hackertalks.comlinkfedilinkEnglisharrow-up11·2 days agoNitrogen is denser then air, so you can have a float indicator at the rim of the unit, if the nitrogen dips to low you pump in more until the float… floats. All mechanical, no electronics needed!
Maybe a refillable liquid nitrogen container so it forces all the oxygen out every time you open it.
Nitrogen is denser then air, so you can have a float indicator at the rim of the unit, if the nitrogen dips to low you pump in more until the float… floats. All mechanical, no electronics needed!