The current device can easily be carried around and used in conjuction with a netbook/laptop. The body features some hole patterns for connecting it to a separate stand with integrated light source. When the design for this will be finished, it should be possible to use the spectrometer for analysing samples in standard cuvettes (square 10x10x45mm).
Step 1: Existing Kit
- a DVD-R, from which a piece is to be cut as diffraction grating
- a piece of black card paper from which to cut an aperture slit
- a small HD webcam and USB cable
- an aluminum Type LB conduit enclosure
- double-sided foam adhesive
- instructions and a copy of the CERN Open Hardware License
Step 2: New Design
- The 3D printed body contains an integrated, flexible clamp for securing the USB cable
- The camera strip alligns in a slot and attaches with three very small, self tapping screws
- The card insert fits into the printed body, without gaps
- Several holes are present in the main body, for future use. They can be tapped to M4 size, using a manual tap. I am planning to design a separate stand, for using the spectrometer to analyse samples in standard cuvettes (square 10x10x45mm)
Step 3: 3D Printed Part
Use an M4 tap to create the required threads. The flexible tab for securing the USB cable, can be held in place by temporarily inserting a 1.5mm drill bit (see last photo).