If you need to detect colors in your future project, whether that’s for your Lego Mindstorm or whatnot, you might want to take a look at this nifty color sensor circuit and save a lot of headache and time.
Color sensing depends on measuring the intensity of light at different wavelengths. A spectrometer does this by splitting the light with a prism or diffraction grating into its component wavelengths. However, spectrometers are complex and too difficult to build. Another approach measures the