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Infrared (IR) is a form of light which is not visible to the human eye. It can be used in a variety of applications, including remote controls, data transfer, reflectance sensing, and proximity/motion detection.

1 vote
1 answer
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How to wire QRB1114 IR sensor to an Arduino Uno

What's the best way to wire a QRB1114 IR sensor to an Arduino Uno? I'm attempting to use it as a white-line-on-black-background line detector. …
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3 votes
2 answers
3k views

How to wire an analog IR sensor for digital input?

For white, the voltage drops to 0.7V, so that reads perfectly, but black still reflects a lot of IR, so it typically reads 2.3V, which still translates as a LOW value. …
Cerin's user avatar
  • 1,668