Public Lab has developed multiple open source Do-It-Yourself spectrometer designs. Choose between the following:

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  <a href="/wiki/dsk"><img class="img-rounded" src="https://i.publiclab.org/system/images/photos/000/005/496/original/spec-dsk.jpeg" /></a>
  <h3>USB Desktop Spectrometry Kit</h3>
  <p>a precise and inexpensive webcam-based design built in a conduit box</p>
  <p>
    <a class="btn btn-primary" href="http://store.publiclab.org/products/desktop-spectrometry-kit"><i class="icon-white icon-shopping-cart"></i> Buy one</a>
    <a class="btn btn-primary" href="/wiki/dsk"><i class="icon-white icon-wrench"></i> Build one</a>
  </p>
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  <a href="/wiki/smartphone-spectrometer"><img class="img-rounded" src="https://i.publiclab.org/system/images/photos/000/005/495/original/spec-smart.jpeg" /></a>
  <h3>Smartphone Spectrometer</h3>
  <p>rigid plastic spectrometer attachment for your smartphone -- robust and very high precision</p>
  <p>
    <a class="btn btn-primary" href="http://store.publiclab.org/products/smartphone-spectrometer"><i class="icon-white icon-shopping-cart"></i> Buy one</a>
    <a class="btn btn-primary" href="/wiki/smartphone-spec"><i class="icon-white icon-wrench"></i> Build one</a>
  </p>
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  <a href="/wiki/foldable-spec"><img class="img-rounded" src="https://i.publiclab.org/system/images/photos/000/005/497/original/spec-fold.jpeg" /></a>
  <h3>Foldable Mini-Spectrometer</h3>
  <p>a small paper model which attaches to a smartphone</p>
  <p>
    <a class="btn btn-primary" href="http://store.publiclab.org/products/foldable-mini-spectrometer"><i class="icon-white icon-shopping-cart"></i> Buy one</a>
    <a class="btn btn-primary" href="/wiki/foldable-spec"><i class="icon-white icon-wrench"></i> Build one</a>
  </p>
</div>
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All of Public Lab's kits are open source - you can always make your own using the listed parts. The store and the Kits Initiative are intended to help community members cheaply and easily get started.