upontheturtlesback writes "As part of developing the next open source science tricorder model, Dr. Peter Jansen of the Tricorder project has released the source to an inexpensive 3D printable visible spectrometer prototype intended for the next science tricorder, but also suitable for Arduino or other embedded electronics projects for science education. With access to a Makerbot-class 3D printer, the spectrometer can be build for about $20 in materials. The source files including hardware schematics, board layouts, Arduino/Processing sketches and example data are available on Thingiverse, and potential contributors are encouraged to help improve the spectrometer design."
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