Public Lab Wiki documentation



Papercraft Spectrometer Kit

This is a revision from November 30, 2017 19:56. View all revisions
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« Back to Spectrometry

After a few years, we're returning to one of our oldest kits to update and improve it, building on lots of community-contributed ideas, improvements, and refinements. This page collects resources, questions and activities related to the design.

Quick start

To get started assembling your spectrometer, try:

Assemble your spectrometer or Get a kit

The first link also includes the design files for printing. Or,

Design goals

Our goals were:

  • more rigid/robust
  • printable on non-black paper
  • easier to cut out with just scissors
  • put more of the instructions on the object itself, like on the Antikythera Mechanism

Keep in mind -- this is the "introductory" design intended to onboard newcomers to the project, so we're trying to make it as easy as possible to build. Once you've made this, you're ready to move on to more complex projects, like scanning, sample preparation, and more robust designs.

We haven't gotten all the way there on every goal -- we'd hoped to make a version that required no glue -- just locking tabs -- but we just couldn't keep it small enough to be printed on a folded-in-half letter sheet. See this note, this, and some of these photos for my process of integrating all these changes, and see this page for some of the many many people who've contributed.

Screenshot_2017-11-30_at_12.50.12_PM.png


Activities

Purpose Category Status Author Time Difficulty Replications
Calibrate your spectrometer in Spectral Workbench verify review-me @warren 15m easy 5 replications: Try it »
Build a papercraft spectrometer for your phone -- version 2.0 - - @warren - - 2 replications: Try it »
Preparing a DVD-R to act as a diffraction grating - - @MrBumper - - 1 replications: Try it »
Scan and compare different gases (in discharge tubes, like neon) using a DIY spectrometer - - @warren - - 27 replications: Try it »
Make a narrow slit for a DIY spectrometer out of paper - - @warren - - 0 replications: Try it »
See the Fraunhofer absorption lines in sunlight verify draft @warren 1h easy 4 replications: Try it »
Draft: Find the concentration of a liquid with a DIY spectrometer - - @warren - - 0 replications: Try it »

Add an activity  or request an activity guide you don't see listed

Activities should include a materials list, costs and a step-by-step guide to construction with photos. Learn what makes a good activity here.

Questions

This section is for questions about the Papercraft and Foldable Spectrometry Kits, specifically.

For questions about spectrometry in general, see this FAQ.

Title Author Updated Likes Comments
I'm completely confused. I built the papercraft one, but then what do I do? @mactac11 about 2 years ago 1
Split DVD – which part to use for spectrometer @Nelari about 3 years ago 4
Can you give me measure for spectrum? Thank you. @Skorex about 3 years ago 2
Can I get a file of numbers instead of a graph from the foldable spectrometer software? @mountevans over 4 years ago 4
Do I need to use a DVD-R? Will a CD-R work too? @jordankc over 4 years ago 2
Paper for printing @G33K4P00RV4 over 4 years ago 5
Noise when Trying to Analyze Spectrum @matthart610 over 4 years ago 1
Can I use a Diffraction Grating Slide Holographic 1000 lines/mm instead of the CD? @oglezsa over 4 years ago 3
What's an easy way to compare two liquid samples with a spectrometer? @warren over 4 years ago 7

Ask a question  or help answer future questions on this topic


Get involved in the next revision

Have you made improvements to the kit? Share them as an upgrade and we may get in touch to integrate your changes into the kit itself.

Upgrades

Have you added to your starter kit, improved it, or redesigned it? Show others how to take it to the next level by posting a build guide here:

Add your upgrade guide here Request or propose an upgrade

Upgrades should include a parts list and a step-by-step construction guide with photo documentation. See an example.

Limitations and next steps

The resolution and stability (ability to hold a wavelength calibration) of the spectrometer depend on how carefully you construct and store it. This kit is designed to be easy to assemble, and is not focused on precision or highly consistent measurements; it’s made of paper, and will crush if you put it in your pocket -- but it can be made out of easy-to-find materials and assembled in ~15 minutes.

For a more rigid, robust device intended for more advanced work, check out the Desktop Spectrometry Starter Kit.

To improve it, see the related upgrades and feel free to post your own improvements there.

Most digital cameras can record light in the visible range, ~400-700 nanometers, so this determines the range of your device. The resolution is mainly limited by the resolution of the camera (and its focus!) and less by the narrowness of the slit -- but measurements should be possible at better than 3 nanometers per pixel.