Pololu 38 kHz IR Proximity Sensor, Fixed Gain, Low Brightness

Pololu item #: 2579
Brand: Pololu
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 6.95
5 6.39
25 5.88


backorders allowed

This module features a fixed-gain, 38 kHz modulated IR sensor and a corresponding IR LED with oscillator circuit to make a tiny proximity sensor. This low-brightness version draws an average of 8 mA at 5 V and has a typical sensing range up to approximately 12 inches (30 cm).

Alternatives available with variations in these parameter(s): maximum range Select variant…

 Description Specs (6) Pictures (11) Resources (5) FAQs (0) On the blog (1) 

Pololu 38 kHz IR proximity sensor.

Pololu 38 kHz IR proximity sensor.

Pololu 38 kHz IR proximity sensor receiver and emitter sides with labeled pinout.

Pololu 38 kHz IR proximity sensor with included header pins.

Pololu 38 kHz IR proximity sensor, receiver side.

Pololu 38 kHz IR proximity sensor (low brightness), emitter side.

Pololu 38 kHz IR proximity sensor (high brightness), emitter side.

You can tell the high- and low-brightness versions of the 38 kHz IR proximity sensor apart using R3 (yellow) and R4 (blue) on the emitter side.

Schematic diagram for the Pololu 38 kHz IR proximity sensor.

Oscilloscope capture of typical Pololu 38 kHz IR proximity sensor output when it is weakly, moderately, and strongly affected by fluorescent lights (top to bottom).

Oscilloscope capture of typical Pololu 38 kHz IR proximity sensor output close to its threshold of detection.


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