Public Lab Wiki documentation



Spectral Workbench



What is Spectral Workbench?

SpectralWorkbench.org is a web based application to collect, archive, share, and analyze spectral data, for Public Lab DIY spectrometers and other spectrometers.

With it, you can:

  • connect your USB Desktop Spectrometry Kit
  • scan and save samples
  • wavelength calibrate your spectrometer
  • plot light intensity as a function of wavelength (average digital consumer cameras have a range of 400 to 700 nm)
  • create sets of multiple spectra to visually compare and analyze scans
  • download CSV data for offline analysis
  • view others' data and discuss
  • find similar data in a database of over 60k spectra

No download is required -- just a web connection. The Chrome browser works best, but most standard-compliant browsers are supported. It is possible to use from an Android smartphone, preferably with the Firefox browser which allows you to specify which camera to look through.


Contents


Intro video


Development

Do you code? The codebase of Spectral Workbench is available at https://github.com/publiclab/spectral-workbench. The server is written in Ruby on Rails, with a lot of client side code in JavaScript. You can read about the JavaScript API here.

We really need more developers, so if you are interested, please get involved! A great place to start is the "plots-dev" mailing list for software developers: http://publiclab.org/wiki/developers


FAQ

We're collecting and working our way through a range of questions about Spectral Workbench -- if you can contribute your own questions, or answer others', please do!

Title Author Updated Likes
comparison betweeen spectra made by manufacturer and spectralbench? @miramon 2 months ago
How do I use SpectralWorkbench.js to auto-calibrate? @shenzj1994 3 months ago
Can you get color temperature from spectra @miramon 3 months ago
Can I get a file of numbers instead of a graph from the foldable spectrometer software? @mountevans 3 months ago
I can't enter a password when I try to login to Spectral Workbench. So I can't log in at all. @storacremu 4 months ago
CSV files from spectra @Dr_Z 4 months ago
I want to know a method to quantify milk proteins using the foldable mini spectrometer, Is this possible? @julsmill 4 months ago
I want to know a method to quantify milk proteins (cow milk, almond milk, coconut milk, oat milk) using the foldable mini spectrometer, Is this possible? @julsmill 4 months ago
How to use the API to export a constant stream of data? @Reallygeek 4 months ago
How do we confirm the current version of the software? @quencher 5 months ago
How should i go about converting svgs to jpgs or pngs @Flameytail 5 months ago
Does anyone know what image processing spectral workbench does to find intensity at wavelength/ where to find the coding for that? @Reallygeek 5 months ago
Calibaration or switching scale? @jayjay70 8 months ago
Delete my profile? @MEC08 9 months ago
Starlight Recorder KIC8462852 @LightWaveResearch8000 9 months ago
How To Make Time Lapse Spectrometer @LightWaveResearch8000 9 months ago
"Use or calibrate calibration" dont show my reference CFL already calibrated @JSAENZ 9 months ago
Image is blue - First time @LightWaveResearch8000 9 months ago
Copying Calibration @Ridwane 11 months ago
Suppression of background light @saeed957 12 months ago
Cannot find colour spectrum @SpencerH about 1 year ago
Fraunhofer Lines at higher resolutions? @stef about 1 year ago
What are the units on the X axis for the spectrum capture for the Desktop Spectrometry Kit 3.0 @Schoster about 1 year ago
Save and Download buttons -where does the file save or download to? @testtube about 1 year ago
How to get spectral data in excel or other formats @suha about 1 year ago
orientation of slit vs that of diffraction grating @wlkwong over 1 year ago
Spectral Workbench recording time? @dhale2 over 1 year ago
Calibration of spectra fails @Paul_P over 1 year ago
Why copy calibration does not apply? @aelobo over 1 year ago
Intensity for spectra too low? @chuynh451 over 1 year ago
Error on calibrating uploaded spectrum @sarahcm over 1 year ago
how to delete my spectra on Spectral Workbench @redleon over 1 year ago
Calibration Issues with larger images @Anmar over 1 year ago
Can i upload csv files on spectralworkbench for calibration and other purposes? @shubham over 1 year ago
Question: Is Global Warming primarily man-made or a natural occurring phenomena? @dhaffnersr over 1 year ago
Question: Using a webcam with a image resolution of 1920x1020 @seko almost 2 years ago
How to rename a set on Spectral Workbench? @AndrewJamesLaplante almost 2 years ago
Question: How do I get the calibration user interface? @PeterDH almost 2 years ago
Question: Why average? And what happens to the second Green? @viechdokter almost 2 years ago
Difference CFL and Tube light? @Joris almost 2 years ago
Question: desktop spectrometer 3.0 light sensitivity @Joris almost 2 years ago
Question: Why won't the spectrum plot show once the image has been uploaded? @litar almost 2 years ago
Question: Focus on mobile phone @clownfish almost 2 years ago
Question: ccd camera on metascop @leanr about 2 years ago
Getting the spectrometer to work with a Raspberry Pi? @anjohn12 about 2 years ago
Automated captures? @viechdokter about 2 years ago
Question: total beginner problems @viechdokter about 2 years ago
Question: Spectrometer using photosensor @Abhay7417 about 2 years ago
Question: How do I save the calibration data? @mokeymark about 2 years ago
Question: Micro volume spectrometer using arduino and light detecting resistor. @Abhay7417 about 2 years ago
Question: can't save spectrum anymore @eigentuininhuis about 2 years ago
can't get the calibration right @eigentuininhuis about 2 years ago
What size (width and height) of the image to vertical upload (blue top) in SpectralWorkbench? @asasergio about 2 years ago
Question: How do I measure the absorption spectrum of a sample? @lucca_fabani over 2 years ago
Calibrating @daniel94 over 2 years ago
Question: What does the vertical scale mean? @someHerrings over 2 years ago
Question: Is there a way to delete a set of spectra from the spectral work bench? @ethanbass over 2 years ago
Question: Help @porbe over 2 years ago
Question: Why I can not upload images to calibrate @congminhqt over 2 years ago
Question: downloading spectrum @mebaumga almost 3 years ago
Question: Stray light correction @SIMJEDI almost 3 years ago
Question: Colorimetry using the desktop spectrometer @mattiecaroline1991 almost 3 years ago
Question: deep UV @mebaumga almost 3 years ago
Question: @edilberto about 3 years ago
Question: "live" compare to camera feed @wecapa about 3 years ago
Show 55 more

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Troubleshooting

If you feel you've encountered a bug with the software -- very possible! Please look through existing issues listed here, file a new one if you don't see something similar, and help to add any observations to existing issues shown here.

Thanks for helping improve this open source software!

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