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Reflection sensors

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KTIR0711S reflective optocoupler sensor - 5pcs

Reflective optocoupler  used, for example, to distinguish the edges. The  system is closed in a small, surface soldered case with dimensions: 2.7 x 3.4 mm. Items are sold in...
Index: UCC-00053
Index: UCC-00053
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Regular price €2.91 Price €2.91

CNY70 reflective optocoupler sensor

Reflective optocoupler used, for example, to distinguish the edges or for line detection. Case dimensions - 7 x 7 x 6 mm,through hole installation.
Index: UCC-00052
Index: UCC-00052
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Regular price €0.69 Price €0.69

TCST1103 photoelectric sensor - optocoupler

Slit width: 3 mm. Maximum voltage - 70 Volts .
Index: UCC-00372
Index: UCC-00372
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Regular price €0.91 Price €0.91

Receiver and IR transmitter LiteOn 940nm (pair) - SparkFun SEN-00241

The IR transmitter, sending the wave with the length of 940 nm together with the receiver in the form of NPN phototransistor, they can be used as a simple, reflective distance...
Index: SPF-01977
Index: SPF-01977
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Regular price €1.22 Price €1.22

Reflectance sensor KTIR0711S

Module with reflective sensor KTIR0711S powered with the voltage of up to 5 V. It is characterized by small dimensions : 9 x 14 mm .
Index: MOD-00918
Index: MOD-00918
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Regular price €1.33 Price €1.33

Distance sensor, reflective 3,3V/5V - 30mm - Waveshare 9523

The reflective module with IR sensor equipped with digital and analog output. It works with a voltage from 3 V to 5.3 V. It enbales the detection of obstacles in the range from...
Index: WSR-04459
Index: WSR-04459
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Regular price €3.60 Price €3.60

Proximity sensor HSDL-9100-021 60mm

Miniature proximity sensor from Avago Technologies to detect objects at a distance from 0 to 60 mm.
Index: SES-01401
Index: SES-01401
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Regular price €1.85 Price €1.85

Reflectance sensor KTIR0711S - with connectors

Module with reflective sensor KTIR0711S powered with the voltage of up to 5 V. It is characterized by small dimensions: 9 x 14 mm. It has soldered goldpin connectors.
Index: MOD-01744
Index: MOD-01744
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Regular price €1.53 Price €1.53

Photo Interrupter Sensor, Speed Measuring - Waveshare 12225

Digital module with optical sensor, with a gap of 6 mm. The module has a built-in comparator, because of this, the output is a digital signal. Supply voltage is from 3.3 V to 5...
Index: WSR-08834
Index: WSR-08834
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Regular price €3.23 Price €3.23

Reflector for photoelectric sensor 6x4cm

Reflector for photoelectric sensors. The size of the refelector - 40 x 60 x 8 mm.
Index: AKS-10611
Index: AKS-10611
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Regular price €2.21 Price €2.21

PNP E3Z-D81 12-24V IP67 - 100mm photoelectric sensor

The photoelectric sensor detects objects using the method of reflections. The detection range is from 5 m to 100 m. It has two modes of operation: Light-ON and Dark-ON. It is...
Index: AKS-10609
Index: AKS-10609
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Regular price €14.88 Price €14.88

Photocell for gates - sensors IR

The kit includes: the transmitter and receiver of infrared radiation. Together they create an invisible barrier, which when crossed by a person, an animal or a vehicle, will...
Index: LED-07174
Index: LED-07174
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Regular price €8.12 Price €8.12

DFRobot Gravity - line tracking sensor - reflector, 433MHz digital receiver

Digital sensor of tracking the line, reflective for Arduino, it can detect the white and black lines. Separate signals provides a stable output signal TTL, so it looks for more...
Index: DFR-11273
Index: DFR-11273
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Regular price €5.70 Price €5.70

LTV-357T optocoupler

Transoptor with transistor output, single channel. Used for optical insulation of systems. The circuit is closed in a small, surface soldered casing.
Index: MOD-15249
Index: MOD-15249
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Regular price €0.44 Price €0.44

QTR-1A reflectance sensor - 2pcs. - Pololu 2458

Two modules with QTR reflective sensors. They have an analog output. The supply voltage is 5 V.
Index: PLL-01842
Index: PLL-01842
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Regular price €3.93 Price €3.93

NPN E3Z-R61 12-24V IP67 - 4m photoelectric sensor - cable length 2m

The photoelectric sensor detects objects using the method of reflections from the reflector, with the function of MSR. The detection range is from 0.1 m to 4 m. It has two...
Index: AKS-10608
Index: AKS-10608
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Regular price €14.88 Price €14.88

VCNL4010 - distance and light sensor 20cm I2C - Adafruit 466

A digital sensor measuring the distance ranging up to 20 cm and the intensity of the incident light. It communicates via the I2C bus (TWi), it works with a voltage of 3.3 V and...
Index: ADA-04969
Index: ADA-04969
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Regular price €9.98 Price €9.98

QTR-8A reflectance sensor array- analog - Pololu 960

Strap of the eight reflecting sensors with analog outputs. It is powered with the voltage of 5 V or 3.3 V.
Index: PLL-00152
Index: PLL-00152
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Regular price €8.81 Price €8.81

Trim with QTR-3A reflective sensors - analog - Pololu 2456

Compact bar with three reflective sensors with the size of 32 x 8 mm. It has analog outputs, it is powered with the voltage of 5 V.
Index: PLL-01730
Index: PLL-01730
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Regular price €4.42 Price €4.42

Slit sensor - GP1A57HRJ00F optocoupler - SparkFun SEN-09299

Sensor with an IR emitter on one side and the screen IR detector on the other. Through the emissions of the beam of infrared light, it can detect when an object passes between...
Index: SPF-11445
Index: SPF-11445
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Regular price €3.23 Price €3.23

Distance sensor, reflective 3,3V/5V - Iduino ST1140

The module is equipped with IR reflective sensor equipped with digital output. It works with a supply voltage from 3.3 V to 5 V. It is applied in the robots tracking the...
Index: OST-14274
Index: OST-14274
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Regular price €1.79 Price €1.79

Grove - RS-06WD reflectance sensor v1.1

Module from the Grove is equipped with the reflective sensor  RS-06WD. It consists of LED emitting the infrared light and phototransistor of high sensitivity. It is supplied...
Index: SEE-11331
Index: SEE-11331
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Regular price €2.21 Price €2.21

Distance sensor, reflective - receiver + transmiter IR - 3.3V / 5V - 40cm - Iduino ST1081

The reflective module with a transmitter and an infrared receiver, equipped with a digital output. It works with a voltage from 3.3 V to 5 V. It enables the detection...
Index: OST-14256
Index: OST-14256
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Regular price €2.30 Price €2.30

Reflectance sensorQTR-L-1A - analog (2 pcs) - Pololu 2454

Module with reflective sensor basing on the transmitting LED and phototransistor operating in the infrared range. The sensor is powered with the 5V voltage. The output is an...
Index: PLL-01406
Index: PLL-01406
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Regular price €4.63 Price €4.63

The reflection sensor is a device that can be found in thousands of robotic projects, especially the more advanced ones. Line followers are a good example. The task of such a robot is to follow a path in accordance with the course of a line drawn on the surface. Typically, line followers fall into two categories: devices that follow a white line on a black background in reverse, i.e. devices that follow a black line on a white background. In order for the robot to be able to properly follow its path, it must be equipped with appropriate equipment. Such a device - apart from power supply and drive, microcontrollers and a processor - is the reflection sensor. Reflective sensors effectively warn of potential obstacles on the track. See all products available in this category. Choose the highest quality sensors that meet your needs now.

The principle of operation of reflection sensors

Reflective sensors can be used both for Internet of Things projects and for building your own robots. There are many types of these devices. How do reflection sensors work?

In general, it can be said that reflection sensors are such elements of industrial automation that work by interrupting the light beam sent from the sensor. This light beam is reflected back from the reflector. So the reflection sensors use visible and invisible light (most often infrared but also ultraviolet), ordinary and laser. One of the simplest variants is an optical reflective sensor that uses an infrared LED. Additionally, they are paired with phototransistors. The phototransistor is connected to the supply voltage source through a resistor forming a voltage divider. It is worth to mention that at the output of this divider a voltage of 0V to typically 5V is obtained as a representation of the IR reflection, with the lower value representing a stronger IR reflection.

In terms of electrical voltage issues, the way the sensors work is easy to understand. The analogue output of the sensor, while supplying the received voltage, can be connected for further reading in various ways. How to do it? The simplest technique is to connect the sensor output to the analog input of the ADC on the microcontroller or to the binary input using a software comparator. The second option is to connect the sensor to a hardware comparator with an adjustable logic change threshold (LM393 integrated circuit). A two-state microcontroller is required for reading. While new reflection sensors now work through infrared and LEDs, there was once an incandescent or discharge (UV) light source.

Types of reflection sensors

There are plenty of reflection sensors that might be used in various projects. Some devices are used to build robots and DIY Internet of Things projects, while others are used in industrial automation (production lines).

Reflective sensors is a name that covers a whole group of different devices. They work similarly, but you can see differences based on how the returned light is used. In this respect, we can distinguish between classic distance sensors, color sensors, contrast sensors and surface smoothness sensors (also known as gloss sensors; gloss meters).

The sensors shown here can be implemented in different places. Due to the small dimensions of the sensors, they can be easily connected in parallel in the form of a bar, which allows easy detection of edges, walls and other obstacles, including the possibility of measuring the distance from them.

Measurement accuracy of reflection sensors

Laser and optoelectronic sensors have very good measurement accuracy and are well suited for many hobby and advanced projects. To get the best possible sensor accuracy, perform a calibration first. Calibrating a proximity sensor is an important process as there are no ideal sensors and, despite the repeatable production technology, two identical sensors can output different voltage values. The method of calibration also affects the accuracy of the measurement. In many cases, it is worth choosing programming. These steps will be very simple if you are also using Arduino. The presented sensors are compatible with various programmable electronics components.

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