2020-2021 Detector

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For an added challenge, (eg at nats), you could have two different monochromatic light sources and ask the teams to return two wavelengths. This would kill the filter approach and force people to use diffraction stuff, though.

If you know that you have no more than two monochromatic light sources, you can still do it with multiple filters (it just takes more data analysis).

Fair, but isn't there now a need for more that one sensor output?

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You know what I thought might be cool to make or a detector, a radiation level detector. I mean like this will add some interesting aspects to the detonator, but also be somewhat challenging. I feel a max of ~125 rad should be allowed, but their may be some side effects from the testing of this kind of detector. You would probably use a grainger counter of sorts to get the analog reading you need. Thoughts?