Infrared (IR) Distance and Movement Sensors

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.


Dagu Infrared Compound Eye

Code: SEN-10034

Designed to fit LMR's universal sensor bracket, this sensor works by shinning IR light onto an object and then tracking the reflected IR. This sensor does not work in bright daylight as sunlight has a lot of IR and blinds the sensor.The IR LEDs can be controlled by a digital output so that ambian...


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Infrared Object Detector with 3-80cm digital output

Code: SEN-10051

Infrared object detector with digital output and 3-80cm range. This simple sensor has a normally open output and detects an object within 80cm range. It can be used as a simple proximity sensor in many applications.


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Infrared Optical Detector / Phototransistor - QRD1114

Code: MCU-60220

This infrared sensor detects objects up to 3cm away. With an infrared LED and a phototransistor it detects objects or black-white changes for line following robots or edge detection.


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IR Infrared Receiver Diode - TSOP38238

Code: MCU-60213

TSOP38238 Infrared IR Receiver diode from Vishay Semiconductor interprets infrared signals for microcontroller based projects. It has noise suppression to compensate for fluorescent lights and other interference. It's a mini remote control receiver in a tiny package. Works with Sony, NEC and more.


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MLX90614ESF-AAA Infrared Temperature Sensor 90° FOV

Code: SEN-10027

The Melexis MLX90614ESF-AAA is a high-accuracy, high-resolution, non-contact thermometer with a 90-degree field of view. It has a measurement resolution of 0.02°C and is factory calibrated for a wide -70 to 380°C object temperature range. The sensor uses an SMBus (I²C-compatible) digital interfac...


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Photo Interrupter - GP1A57HRJ00F

Code: SKU-000376

This photo interrupter sensor is triggered when something breaks the beam of infrared light between the two uprights. The sensor has a infrared emitter in one upright and a detector in the other. See the related products below for a matching breakout board.


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PICAXE Infrared LED 5mm (PICAXE LED021)

Code: MCU-60140

Infrared LED 5mm. For use with PICAXE circuits to produce infra-red signals like a TV style remote control. Compatible with the LED020 sensor.


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PIR Passive Infrared Motion Sensor 5-12 Volt

Code: SEN-10082

This Passive Infrared PIR Motion sensor monitors changes in ambient infrared light to detect motion. Ideal as an alarm sensor to monitor rooms where the sensor will detect movement of people into the room.


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

Code: SKU-003795

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 high-brightness version draws an average of 16 mA at 5 V and has a typical sensing range up to approximately 24 inches (60 cm) .


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Pololu QTR-1A Reflector Sensor with Analog Output (2 Pack)

Code: SEN-10061

The QTR-1A reflectance sensor carries a single infrared LED and phototransistor pair in an inexpensive, tiny 0.5" x 0.3" module that can be mounted almost anywhere and is great for edge detection and line following applications. The reflectance measurement is output as an analog voltage. ** sold...


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