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Why don't smart watches use USB-C to recharge? (shkspr.mobi)
submitted 1 year ago by to c/technology@lemmy.world
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[–] 20 points 1 year ago* (6 children)

As I understand it you can do USB-C at a basic 5V level with 2 resistors, and for a watch that would be plenty of power.

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  • [+] -8 points 1 year ago (5 children)

    yeah but that wouldnt be USB C because usb C is a standard that requires a ton of different things like double way data and power rails and handle 60watts etc. If you just need 5v then you can do it in a much smaller way via another connector or even wirelessly.

    I'm gonna assume you know more about this and I do because i cant even light up an LED in a circuit.

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  • [–] 24 points 1 year ago (1 child)

    USB C does not require all applications use all aspects available in the current spec (USB 3), that’s just silly. Take the latest iPhone for example (not the pro series,) they are all essentially running USB 2 through a USB C cable. And that’s perfectly fine.

    The real problem is when a company uses USB C but follows none of the wiring or standards requirements for any standard. Such as running power over data pins making the charger some proprietary Frankenstein of bullshit.

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  • [–] 11 points 1 year ago

    USB C is only the plug… USB 3.2 is the specification

    USB power delivery is part of the specification that you can support without support for the other parts and is incredibly simple to implement by itself

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  • [–] 8 points 1 year ago*

    You don't need to follow the entire spec for a usb c. Usb c has a display port mode, but most laptops that have this won't have it on every port. Most usb c cables also don't support display port mode, which is annoying because they usually won't say if it supports it.

    Usb c extension cords are not allowed and yet they exist

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