At long last, we've started shipping the Smartphone Spectrometer, formerly called the "Backpack Spectrometer" -- and you can order a kit today (shipping begins by the end of the month):

http://store.publiclab.org/products/smartphone-spectrometer

Read more about the new kit here: http://publiclab.org/notes/warren/11-15-2013/introducing-the-public-lab-smartphone-spectrometer

List of parts

• 3 injection molded plastic (ABS) parts
• 2 short screws
• 2 long screws
• black paper liner
• diffraction grating
• protective film
• precision printed slit
• jewelers screwdriver

Design files

This being open hardware (CERN OHL 1.1), here are the files:

PublicLaboratory_Mobile_Spectrometer_v31.zip

These are also on Thingiverse: http://www.thingiverse.com/thing:116610

And here is a more 3D-printable version by Brad Dudenhoffer:

http://www.thingiverse.com/thing:125428

Order a 3D print on Shapeways here: https://www.shapeways.com/model/976427/public-lab-smartphone-spectrometer.html

Instructions

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Sketchup model: smartphone-spec-overview.skp

Mathew's Assembly Run

• 3 injection molded plastic (ABS) parts
• 2 short screws
• 2 long screws
• 1 short black paper liner (5cm x 4cm)
• 1 long black paper liner (5cm x 8cm)
• 6 5cm lengths of double-sided tape
• 1 5cm black foam tape
• diffraction grating (5cm x 4.4cm) *protective film I did without-- this extra step increases the chances of damaging the grating in order to protect it.
• precision printed slit
• jewelers screwdriver
• razor blade

See full image set here

Adhesive options

Here's a list of other adhesives and tape strips which may be helpful in assembling and mounting the spectrometer. Some may be shipped in the kits:

• Tape strips are sold for costumes and wigs: http://www.amazon.com/Bonding-Double-Tape-Walker-Straight/dp/B00D7LA162/
• 3M's super strong 300LSE in letter sheets, ~$12 each: http://www.amazon.com/9474LE-super-strong-double-sided-adhesive-transfer/dp/B00CCGK31G/ ** these are an excellent option. 3M sells 24x36" sheets somewhere. we can save users any trimming through cutting to 6mm wide-- the width of the edges of the mountplate. one sheet = 300 30cm strips 6mm wide, giving each user 6 5cm pieces they can cut to length with their razor. Then there's no tape trimming to do when attaching.
• Scrapbooking tape strips: http://www.amazon.com/Double-sided-adhesive-mounts-12-pack/dp/B00D5WDZXO/ (hard to find but good size -- big lots available on ebay: http://www.ebay.com/itm/New-72-Packs-Scrapbook-Double-Sided-Adhesive-Strips-/321157403796 is 3600 strips for $65, or 2c per strip)

Photos

Photos of the assembly process.