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Are there any devices for telling what HDMI or copper cables go together when running them through a wall? (self.nostupidquestions)

submitted 3 months ago by CanadianCabbage to c/nostupidquestions

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I know I can use an HDMI source like a Raspberry Pi and a small screen for HDMI and could twist copper cable together and measure continuity through them to narrow down which is which but I'm wondering if there is an easier way. Maybe something I connect to either end?

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[–] [email protected] 2 points 3 months ago

I'd just get a couple colors of electrical tape and wrap it around the ends