Sensors of light and color

On offer are Botland sensors, performing the measurement of light and measurement of the spectrum for color recognition, allow you to build a variety of interesting diagnostic devices (such as, for example, weather station) and lighting control systems depending on the optical conditions of the environment. In our offer you will find also sensors UV radiation. Sensor modules of the lighting and colors are present in the I2C bus, which allows them to cooperate with platforms such as BeagleBone, Raspberry Pi or Arduino.

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How does the color sensor?

A color sensor determines color of a surface by its exposure, often by using RGB LEDs. Let the color of the object that you see is the result of interaction between the incident on the object light and you, as an observer. In the case of reflected light, the light falling on the object will be totally reflected or partially absorbed, depending on the optical characteristics of the object-for example, the surface is green in color, will absorb a large portion of blue and red, contained in the spectrum, resulting in obserwatorowi will seem greener than it really is. Recognition of colours by their extraction of their constituent colors most often carried out by a method which uses a light source with adjustable color sensor and supply measurement information on the light intensity. Most industrial color sensors, has a built-in white light source and three LEDs, emitting host of the light wave length 580 nm, 540 nm and 450 nm, respectively red, green and blue. This method allows to distinguish full spectrum of colors created from different amounts of these three colors. Color sensors have many uses, including in the definition of environmental parameters, as well as to sort products within their visual identity based on non-ferrous parts.

High quality sensors of light and color compatible with Arduino

The store Botland, you will find functional modules from vendors like SparkFun if Adafruit, with which you will be able to build, in particular, the street lighting, which turn on and off can be realized by an analog ambient light sensor TEMT6000, which in case of detection of correspondingly pre-set threshold in the dark”, sends the necessary control signal for the Arduino to run the lighting with a relay of a mediator between the digital output of the microcontroller, and network elektroenergetyczną. In turn, the color sensor TCS34725, based on the classical indicators RGB with IR-cut filter that will allow You to create a smart robot that supports a wide range of colors. The sensor module requires only four wires to connect to Arduino and successfully as well as measuring the color temperature.