The TCS230 senses color light with the help of an 8 x 8 array of photodiodes. Then using a Current-to-Frequency Converter the readings from the photodiodes are converted into a square wave with a frequency directly proportional to the light intensity. Finally, using the Arduino Board we can read the square wave output and get the results for the color.
Features:

1. high resolution conversion of light intensity to frequency
2. programmable colour and full scale output frequency
3. communicates directly with a microcontroller
4. single supply operation (2.7 V to 5.5 V)
5. power down feature
6. non-linearity error typically 0.2% at 50 kHz
7. stable 200 ppm/°C temperature coefficient

Specifications:

1. S0-S1: output frequency scaling selection inputs
2. S2-S3: photodiode type selection inputs
3. out pin: output frequency
4. OE pin: output frequency enable pin (active low), can be impending when using

wpse325a4v01.pdf

tcs3200_tcs3210_datasheet.pdf

vma325_code.zip

vma325_liquidcrystal.zip

vma325_timerone.zip

vma325_scheme.pdf

ce_rohs_open.pdf