Spectrometer Version 3 Continued

Figure 1

I have been continuing the build for version 3 which holds the sample inside the container. In figure 1 you see the 3D printed sample holder, here I have a test tube but it does hold cuvettes as well. Next to the holder on the right you can see an LED. This one is a bright white LED. I intend to use a RGB LED so I can choice different colours or wavelengths. It will also be removable so I can use IR and UV LEDs.

Figure 2

Figure 3

In figure 2, I use a 3D printed slit holder and then mount 2 single edge razor blades which are adjustable. With the other 3D printed parts I hold the slit mechanism in place within the spectrometer. This allows for removal of the slit so it can be adjusted. In Figure 3 you can see the unit put together.

Figure 4

And in figure 4 you see allthe components put together with the sample and slit holder, LED source, diffraction grading and web cam all in one box.

This is all put together in a wooden box I found at a dollar store. I still intend to make this smaller so I can easily carry with me. I do have access to a 3D printer so it was easier for me to print the parts I needed. But all the parts could be very easily cut from foamboard.