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  • Yes, that looks about right. Sadly the nRF52 doesn't seem to have any 5v tolerant IO pins.

    Personally I wouldn't change the HC-SR04 page - there's no particular reason that should have a note when every other page on hardware doesn't.

    I'll add something to the Puck.js page to make it more obvious that it only has 3.3v IO.

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