Blue TCS230 Color Sensor Module

Technical specifications

• Supply voltages: 3 V - 5 V
• Current consumed: 3 mA
• Frequency response by generating a rectangular signal.
• Dimensions: 32 mm x 25 mm
• Error 0.2% at 50 khz

With the TCS230 we can determine the intensity of light for each color. 

Sensor operation is based on the conversion of the light wavelength into a rectangular signal of a given frequency for each color.

The module has 4 LEDs of different colors that can be used separately. The integrated circuit also has an enable pin. When the circuit is in sleep mode, the power consumption drops to 15 μA.

The TCS230 uses a photodiode matrix. These are circuit elements that allow the current to pass in the presence of a light radiation of a certain frequency (the color is frequency dependent).

The TCS230 contains a 8x8 photodiode array, using 16 diodes that open in the presence of red light, 16 for blue, 16 for green and 16 for white light (white light is obtained by combining all colors).

The module will output a rectangular signal with a color dependent frequency. 

For more details about wavelength conversion, refer to the datasheet attached.

Use with Arduino

Arduino offers the pulseIn function (pin, front). It follows the signal on the input line indicated by the pin argument and measures the signal period. The front argument takes the value HIGH or LOW and indicates it if it has to follow upward (downward from HIGH) or downward (from HIGH in LOW). The function returns the signal period in microseconds. If no signal is detected, the function returns zero.

For code 26.3.0, see the book "Introduction to Arduino" 

https://www.optimusdigital.ro/altele/1676-carte-introducere-in-arduino.html

We will notice that when we approach an object of a certain color, the values ​​corresponding to the object color will be smaller. Combining the three values ​​(red, green, blue) we can determine all the other colors.

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