In order to build a spectrometer, we need something to illuminate the object under analysis, and something capable of catching the reflected light from the object. It's not mandatory to have a collimated ray of light, like a laser, but a normal. In order to build a spectrometer, we need something to illuminate the object under analysis, and something capable of catching the reflected light from the object. It's not mandatory to have a collimated ray of light, like a laser, but a normal beam works fine, even with a certain angular opening. Producing this kind of light is easy enough: a LED. Before getting to the heart of the project it is appropriate to explain what spectrometry is. Let's start saying that the light that our eyes see (the one our brain is able to interpret) is, actually, a portion of what the sun sends and it travels within a wide range of frequency called spectrum. Our eyes sense only a small portion of the solar spe. Schematics are provided to understand how AMS sensors are integrated. In it, we can see the 3 sensors that are very different because each covers a different range of the light spectrum. Specifically it has AS72651 (labeled U1), AS72652 (U2), AS72653 (U3), a Flash Eprom AT25SF041 (U4) by Atmel with 4Megabit of memory, and dual I/O that mount the Mo. Now we will explain how to assemble this project with an understanding that the breakout board has to be self-made and has to be connected to an Arduino Uno board using the wiring drawing. For the breakout board, a double-sided printed circuit board is needed that can be done with photogravure starting with the copper side tracks downloadable from. The library is able to read all 18 channels in one step and save them in the 3 arrays, each one representative of one AMS sensor. Each value is assigned to a name, or better a letter has shown inFig.4 (that also indicates how to call the parameter from the library), but you need all 18 values in order to make a spectrum sufficient to make the acqui.