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A proximity sensor detects the presence of another object without physical contact. There are many different kinds, examples include capacitive, inductive and others using various wavelengths including ultrasonic, visible and non-visible light and RF.

2 votes
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Adequate way to connect sensors far away from arduino

I have a simple setup when I have to read analog values from a light sensor, and I need to put it far away from the arduino (several meters away). I want to know how can I create a wired reliable conn …
IAmJulianAcosta's user avatar