Hyperspectral cameras aren’t commonplace objects; they seize spectral information for every of their pixels. Whereas business hyperspectral cameras usually begin within the tens of 1000’s of {dollars}, [anfractuosity] determined to make his personal with the Waverider.
To seize spectral information from each pixel location within the digicam, [anfractuosity] first wanted a technique to accumulate that information — for that, he used an AFBR-S20M2WV, a miniature USB spectrometer he picked up second-hand. This sensor permits for the gathering of knowledge from 225 nm all the best way as much as 1000 nm. In fact, the sensor can solely do this for one single enter, so to show it right into a digicam, [anfractuosity] added a stepper-driven x-y stage managed by a Raspberry Pi Pico and a few TMC2130 stepper drivers.
With some 3D-printed elements to carry issues collectively and a fiber-optic cable, [anfractuosity] now had a technique to transfer the one-pixel digicam via a variety of areas, turning that one pixel right into a a lot bigger pixel array wanted to get a recognizable picture out. It’s not the quickest digicam we’ve seen — with one 400 × 400 array of photos taking nearly 19 hours to seize — however it does produce a picture that has far a couple of RGB worth per pixel.
Head over to [anfractuosity]’s web site to take a look at all the pictures created and to search out out extra about this challenge, and take a look at a few of our different single-pixel digicam tasks we’ve featured previously. Or, possibly you need to use your cellphone.
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