Lego Spectrometer (2017)(publiclab.org)

65 pointsby matthberg4 yıl önce6 comments

Lego Spectrometer (2017)

https://publiclab.org/notes/warren/12-13-2017/assembling-the-public-lab-lego-spectrometer

6 comments

Found this after looking into cheaper alternatives to yesterday's post on a DIY spectrometer with a raspberry pi [0].

Also interesting, and even cheaper, is a paper spectrometer which attaches to a phone camera by the same designer as this Lego one [1].

0: https://news.ycombinator.com/item?id=30027804

1: https://publiclab.org/wiki/papercraft-spectrometer

jcun41284 yıl önce

That DVD film part is neat

devbas4 yıl önce

Beginners question but what is its purpose?

Metacelsus4 yıl önce

Diffraction grating (separates light by wavelength)

hawtkey4 yıl önce

This guy Les put together a piece of software to view/calibrate a spectrum[0]. He also has a YT channel[1] where he builds a couple RasPi spectrometers using pre-made spectroscopes that run $50-100, but the whole package is a lot more compact.

There are also a number of spectroscope enclosures on thingiverse, but it's always so hard to gauge if any of the projects are actually worth printing. The most dead-simple and cheap example I found used the same slit/CD plastic combo capped onto the ends of a paper towel tube.

Some other stuff[2,3,4]

https://github.com/leswright1977/PySpectrometer

https://www.youtube.com/watch?v=jAV7bnNrE-M

https://physicsopenlab.org/2021/06/19/absorption-spectroscop...

https://www.effemm2.de/spectragryph/about.html

https://en.wikipedia.org/wiki/Absorption_spectroscopy

patcon4 yıl önce

Generally, Public Lab builds and 3d print plans are worth your time. Everything they list is well-considered and well-maintained. When the stodgy old magazine The Economist wrote a "Punk Science" article about DIY science, they actually got them include a cut-out page to build a spectrometer :)

https://publiclab.org/wiki/economist