Measuring distance/proximity

SHARP 2Y0A02, IR sensor (λ = 850 ± 70nm)

At-a-glance useful details:

• Sensing range: 20 - 150 cm
• Power requirements: 4.5 - 5.5 V (typ current consumption = 33mA)

• link to datasheet

• Output voltage is not linear with distance; see plot below (from datasheet, linked above)

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