A completed spectrometer ##Specs## (these are approximated but we should soon post a page with calibration information) * ~400-900nm, maybe wider * 5-10nm spectral resolution * ~20-30 samples per second * ~$30 in materials, drops to ~$10 if you use a non-HD webcam * approx. 1 hour construction time * Mac and Linux compatible, should work on Windows but untested * open-source software at: http://github.com/jywarren/spectral-workbench Line up the camera lens with your drawn guideline ##Materials## * Everything necessary to make a DIY Spectrometer (let's try to reduce this list!): * a black VHS case * a straight-edge * scissors * X-acto knife * a pen * black tape (gaffe or electrical) * white glue * hot glue and a hot glue gun * a letter or A4-sized sheet of stiff black card paper * a DVD-R * and a USB webcam * a computer Everything necessary (more or less) to make a DIY Spectrometer ##Construction## A full step-by-step tutorial can be found in this gallery: https://www.flickr.com/photos/jeffreywarren/sets/72157627998033468/detail/ A more complete tutorial, videos, and a downloadable illustrated guide are coming soon. Get in touch if you want to help out!