Infrared

Infrared

Infrared

Infrared Sensors

Infrared Sensors (IR) are electronic photocell devices that can detect and measure IR radiation in the surrounding environment.  Active IR sensors both emit and detect IR radiation and require two parts: a light-emitting diode (LED) and a corresponding receiver. Passive IR (PIR) sensors only detect infrared radiation and do not emit it from an LED.

Passive IR sensors are most commonly used in motion-based detection, such as in-home security systems. When a moving object that generates IR radiation enters the sensing range of the detector, the difference in IR levels between the two pyroelectric elements is measured.

IR detectors are filtered to detect Infrared light and aren't good at detecting visible light. If you want to sense visible light, you want to look at photocells.

We stock a range of Infrared sensors, components, remote controls, line sensors, breakout boards, proximity sensors, IR transmitters/receivers, and photo interrupters.

IR radiation was discovered by an Astronomer named William Herchel in 1800!  

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  • PPKIT-14677_main PPKIT-14677_main1

    Infrared Remote Control Kit (KIT-14677)

    Sparkfun

    £9.18
    Infrared Remote Control Kit - SparkFun KIT-14677Have you ever needed an easy and effective way to activate electronics from across the room? Infrared remotes are still the cheapest way to wirelessly control a device. We have designed the remote in this...
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  • interupter

    Photo Interrupter GP1A57HRJ00F Infrared kit

    Proto-PIC

    £5.00
      Photo Interrupter GP1A57HRJ00F Infrared kit This sensor is composed of an infrared emitter on one upright and a shielded infrared detector on the other. By emitting a beam of infrared light from one upright to the other, the sensor can detect...
    £5.00
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  • PPADA389_1 PPADA389_11

    Adafruit 389 Mini Infrared Remote Control

    AdaFruit

    £5.71
    Adafruit 389 Mini Remote ControlThis little remote control would be handy for controlling a robot or other project from across the room. It has 21 buttons and a layout we thought was handy: directional buttons and number entry buttons. The remote uses...
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  • 09454-01__26599__84670 09454-01__26599__846701

    SparkFun ROB-09454 QRE1113 Line Sensor Breakout - Digital

    Sparkfun

    £3.00
      SparkFun ROB-09454 QRE1113 Line Sensor Breakout - Digital This version of the QRE1113 breakout board features a digital output, using a capacitor discharge circuit to measure the amount of reflection. This tiny board is perfect for line sensing...
    £3.00
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  • IREmitter-0_i_ma__08131__35668 IREmitter-0_i_ma__08131__356681

    SparkFun SEN-00241 Infrared Emitters and Detectors Pair

    Sparkfun

    £1.69
    SparkFun SEN-00241 Infrared Emitters and Detectors PairSide-looking Infrared Emitters and IR Detectors. These simple devices operate at 940nm and work well for generic IR systems including remote control and touch-less object sensing. Using a simple ADC...
    £1.69
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  • QRD1114__12031__39342

    Optical Detector / Phototransistor - QRD1114

    Sparkfun

    £1.50
    Optical Detector / Phototransistor - QRD1114 This sensor uses an infrared emitted diode combined with an infrared phototransistor to detect the reflected infrared signal. Ideal for sensing black-to-white transitions or can be used to detect nearby...
    £1.50
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  • 09299-3__99431__25936 09299-3__99431__259361

    Photo Interrupter, Infrared Emitter - Detector, GP1A57HRJ00F

    Sparkfun

    £3.42
    Photo Interrupter, Infrared Emitter - Detector, GP1A57HRJ00F This sensor is composed of an infrared emitter on one upright and a shielded infrared detector on the other. By emitting a beam of infrared light from one upright to the other, the sensor can...
    £3.42
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  • 10266-01__44659__89444 10266-01__44659__894441

    IR Receiver Diode, TSOP38238

    Sparkfun

    £1.42
    IR Receiver Diode, TSOP38238 Use this simple IR receiver for infrared remote control of your next project. With low power consumption and an easy-to-use package, it mates well with embedded electronics and can be used with common IR remotes.The TSOP382...
    £1.42
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  • photo-int-bb

    Photo Interrupter GP1A57HRJ00F Breakout Board

    Proto-PIC

    £1.60
    A simple breakout PCB for the GP1A57HR photo interrupter. This PCB has three connections for PWR, GND, and Signal.Now with added M3 Mounting holes and in a fetching black with gold pads!When the gate is clear, SIG will be high (>4.9V). When the gate is...
    £1.60
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  • GP2DY0A21__37971__88451

    InfraRed Ranger GP2Y0A21

    Proto-PIC

    £9.60
    The GP2D120 is an easy to use IR range sensor that outputs an analog voltage relative to the distance. This sensor can detect ranges from as close up as 10cm through to 80cm.
    £9.60
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  • 08733-03-L__89546__82025

    JST Jumper Wire - 3-Pin

    Sparkfun

    £1.08
    JST Jumper Wire - 3-Pin Three pin JST connector with red, black, and yellow colors. 130mm (5") wire outs. This cable comes fully assembled as shown and connects directly to many different Sharp sensors. Quick and easy, this cable will save you 15-20...
    £1.08
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  • 09453-01__78794__34680 09453-01__78794__346801

    Line Sensor Breakout - QRE1113 - Analogue (ROB-09453)

    Sparkfun

    £3.40
    Line Sensor Breakout - QRE1113 - Analogue - Sparkfun (ROB-09453) This version of the QRE1113 breakout board features an easy-to-use analog output, which will vary depending on the amount of IR light reflected back to the sensor. This tiny board is...
    £3.40
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