Infrared

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.

 

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) .

$ 8.95

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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...

$ 5.95

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Pololu QTR-1RC Reflector Sensor with Digital Output (2-Pack)

Code: SEN-10065

The QTR-1RC 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 output is designed to be measured by a digital I/O line. ** So...

$ 5.95

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Pololu QTR-8RC Reflectance Sensor Array

Code: SEN-10017

Ideally suited to a line following robot, the QTR-8RC Relectance Sensor array from Pololu features 8 Infrared (IR) LED/Phototransistor pairs which can be turned off for power savings. Each sensor provides a separate digital I/O measurable output.

$ 13.95

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QTR-8A Reflectance Sensor Array

Code: SKU-002442

This sensor module has 8 IR LED/phototransistor pairs mounted on a 0.375" pitch, making it a great detector for a line-following robot. Pairs of LEDs are arranged in series to halve current consumption, and a MOSFET allows the LEDs to be turned off for additional sensing or power-savings options.

$ 13.95

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Sharp Analog Distance Sensor 10-150cm GP2Y0A60SZLF, 5V with carrier board

Code: SEN-10073

The GP2Y0A60SZ distance sensor from Sharp offers a wide detection range of 10 cm to 150 cm and a high update rate of 60 Hz. The distance is indicated by an analogue voltage, so only a single analogue input is required to interface with the module.

$ 23.95

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Sharp Analog Distance Sensor 2-15cm GP2Y0A51SK0F

Code: SEN-10074

The GP2Y0A51SK0F is the shortest-range Sharp analogue distance sensor Polou carry, featuring a detection range of 2 cm to 15 cm. The shorter range gives you higher resolution measurements, and the low minimum detection distance makes this sensor great for detecting very close objects.

$ 22.95

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Sharp Analog IR Distance Sensor GP2Y0A02YK0F (20cm-150cm)

Code: SEN-10002

Excellent long range sensing makes the cheap Sharp GP2Y0A02YK0F infrared sensor a suitable alternative to ultrasonic sensors for many applications with its range from 20cm to 150cm (8-59").

$ 25.95

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Sharp Analog IR Distance Sensor GP2Y0A21YK0F (GP2D12) (10-80cm)

Code: SEN-10003

One of the most popular sensors on the market this is the replacement of the Sharp GP2D12. The Sharp GP2Y0A21YK0F infrared (IR) sensor takes a continual distance reading from 10cm to 80cm (4-30") and outputs an analog voltage.

$ 21.95

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Sharp Analog IR Distance Sensor GP2Y0A41SK0F (GP2D120) (4cm-30cm)

Code: SEN-10057

Ideal for accurate short range detection the Sharp GP2Y0A41SK0F infrared (IR) sensor ranges from a close up 4cm through to 30cm. Perfect as a reliable contact free bumper with advanced warning.

$ 23.95

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