Sorry about the ridiculous thumbnail - I assumed it would be reduced!
I used the instructions provided for the build phase.I raided the (grown-up)
kids Lego(tm) trove for the pieces and now have a tasteful red and black
Lego(tm) spectrometer.
- I have a set of Publiclab acetate collimation slits, and I'm currently using a 0.12mm slit which is the second narrowest in the set.
- I had a mini/phone paper spectrometer, so I cannibalised that for a Grating mount and liner. The liner is a necessary part, as I noticed a good deal of flare when testing (with an LED torch).
Hardware: Raspberry pi zero wifi version and the v2 (8M pixel) picamera.
Software:
Raspbian Stretch - updated regularly - using the Core-electronics and
Publiclab install notes, and RPi Cam Control v6.4.21, via a direct HTML
interface. I have changed the default settings very little - just a
90degree rotation and turning on titles. I will try out the cedarlodge
GUI when I organise a usb mouse/keyboard combo.
Below is an image for the CFL calibration test. I'm reasonably pleased at this result.
However, the image looks a little out of focus, and I would like to improve this - would a longer body (more Lego(TM)) help?
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This is the best. Thanks for posting, and great documentation!!! 🎉 😀 👍
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I think you can use a very fine pair of tweezers to slightly rotate the Pi Camera lens for a focus change. Do post if that works for you! But yes, a longer lego case may also work. I would like to know if focus changes are needed, though, as we can modify the kit or instructions. Thanks!
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