Infrared sensors are commonly used to measure distance and proximity of objects. As there is no contact and no visible light these sensors are an unobtrusive way to detect obstacles.
Range finding sensors use a beam of infrared light to determine the distance from the sensor to the object. Ideally suited to indoor use these sensors often include compensation for infrared interference from other sources like the sun and indoor lights although direct sun outdoors can be a challenge.
Proximity infrared sensors also emit a beam of infrared light but use the level of reflected light to determine if an object is within a range or not. They indicate yes or no, rather than how far.
Other infrared sensors can detect infrared light as a measure of temperature, PIR sensors include extra logic to detect motion and infrared signal receivers know what your television remote is up to.
Code: SKU-005312
pitch × sensors size (mm) output max current optimal range LED board 8 mm × 16 125.0 × 16.5 RC (digital) 30 mA 250 mA 5 mm This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). More Details...
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Code: SKU-004919
sensors size (mm) output max current optimal range LED board 1 5.0 × 20.0 analogue 30 mA 32 mA 20 mm This IR LED/phototransistor pair is great for precisely identifying changes in reflectance (like line detection). More Details...
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Code: SKU-005314
pitch × sensors size (mm) output max current optimal range LED board 8 mm × 16 125.0 × 16.5 RC (digital) 3.5 mA 34 mA 10 mm This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). More Details...
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Code: SEN-10018
This small digital distance sensor detects objects between 0.5 and 5 cm away. With its quick response time, small size, and low current draw, this sensor is a good choice for non-contact, close-proximity object detection, and Pololu's compact carrier PCB makes it easy to integrate into your proje... More Details...
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Code: SEN-10002
The GP2Y0A02 is the longest-range optical distance sensor we carry, featuring a detection range of 8″ to 60″ (20 cm to 150 cm). The high maximum detection distance makes this sensor a viable alternative to sonar in some applications. More Details...
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Code: SEN-10003
The GP2Y0A21 Sharp distance sensor is a great way to add obstacle avoidance or motion sensing to your robot or any other project. With a detection range of 4″ to 32″ (10 cm to 80 cm) and an analogue voltage indicating the distance, this sensor is very easy to use. More Details...
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Code: SEN-10057
The GP2Y0A41SK0F Sharp analogue distance sensor features a detection range of 1.5″ to 12″ (4 cm to 30 cm). The shorter range gives you higher resolution measurements, and the lower minimum detection distance makes this sensor great for detecting very close objects. More Details...
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Code: SKU-004669
The SparkFun Grid-EYE Infrared Array Breakout board is an 8x8 thermopile array, giving you a square of 64 pixels capable of independent temp detection. More Details...
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Code: SKU-005004
The MLX90640 SparkFun IR Array Breakout is equipped with a 55° FOV, 32x24 array of thermopile sensors creating a low resolution thermal imaging camera. More Details...
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Code: SKU-000423
This version of the QRE1113 breakout board features a digital output using a capacitor discharge circuit to measure the amount of reflection. More Details...
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