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Waterproof USB
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SiliconWizard:

--- Quote from: Bud on July 22, 2019, 03:52:43 am --- Bulgin  Buccaneer IP68 rated connectors are available at Digikey but they are pricey.

--- End quote ---

The PX0843 series: around 10 bucks each. I don't think this is worth fretting over considering the application and the one-off project.
gaminn:

--- Quote from: Ian.M on July 22, 2019, 03:05:16 pm ---5cm untwisted is *FAR* too long - 5mm might be OK.   

--- End quote ---

There was already a cable supplied with the camera with 5 cm untwisted end with custom connector. And it worked... We will see...
ogden:

--- Quote from: gaminn on July 22, 2019, 03:51:43 pm ---There was already a cable supplied with the camera with 5 cm untwisted end with custom connector. And it worked... We will see...

--- End quote ---

"It worked" is relative and depends on many variables. Spread/untwisted data pair leading to improper impedance, thus signal reflections is just one of them. It all adds up: line impedance mismatch, signal loss in long cable and connectors, outside interference sources. When your signal is impaired/weakened *and* there is RF noise nearby - then you may get errors.
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