Google Code-in

OBJECTIVE

Learn how to build a low cost spectrometre with paper and an old CD/DVD that you can attach to a mobile phone and share it online.

REQUIREMENTS

You need:

• Print out a letter sized pdf from this link
• Page 1: the first page has build instructions
• Page 2: the second page should be printed onto sturdy paper. The paper should be black if possible)
• You'll also need scissors to cut out the pattern
• An old CD or DVD, that you can cut

Step by Step:

• Follow the instructions on the PDF here (letter sized).
• You can also see a how to with more photos here.
• When you finished attach the spectrometre to a mobile phone and test it. Make a screenshot of the test.
• Finally post a photo of the spectrometre and the screenshot on the FOSSASIA GCI channel

EXPECTED OUTCOME

• Finished the spectrometre and attached it to a phone cam
• Shared a screenshot of tests on social media
• Shared a photo with the spectrometre and yourself in it on social media

LINKS

• How does spectrometry work: https://publiclab.org/wiki/spectrometry
• Build a spectrometre instructions: https://publiclab.org/notes/abdul/10-19-2016/foldable-paper-spectrometer-instructions
• PDF for print out: https://publiclab.org/sites/default/files/8.5x11mini-spec3.8.pdf