I'am want to connect long-distance sensors with the Arduino, about 50 meters. I have two options (sceneries): "A" and "B" to choose, especially the "B" -> Scenario "A": Arduino Uno connected to an on-off switch via digital port, diagram below: The blue wire in the figure extends for about 50m. …

Maximum distance from Arduino ports to sensors

ardu_cap November 14, 2021, 2:11pm 14

That's right. If the connection is adequate using ESP/Node will be presumably the best choice.

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