Are you a big fan of Lego? For those that grown up with Lego, you must very familiar with all the colorful and assorted sizes Lego bricks. To be honest, Lego bricks can be assembled and connected in many ways, such as vehicles, buildings and working robots as well!
As you can see from the above figure, the color sensor that being used is small enough for the project to be housed in a #5391 Lego 9V Battery Box. It’s a handy enclosure with a connector built right into the top. As a result, it is easier to connect the sensors to a short piece of four-conductor wire if you’re using this box.
Technically, the ability of color sensing is depending on measuring the intensity of light at different wavelengths. A spectrometer is required to split the light with a prism or diffraction grating into its component wavelengths.
In this case, you have [...] [Via]
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