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Question:Getting the spectrometer to work with a Raspberry Pi?

anjohn12 is asking a question about spectrometry: Follow this topic

by anjohn12 | April 14, 2016 18:48 | #12978

I am currently working on creating a program that will go to the spectral workbench page, login, take a spectrum reading, and export the data. I want this to run in the background and not open a web browser. I am running this program on a Raspberry PI 2 and am using python as my programming language.

I tried using the requests module to do this, but I ran into problems. Are there any good, easy to use modules that can be used for this, or are there any modules that the spectral workbench team would recommend for this? Thanks!

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6 Comments

  
Comment Author Profile Picture warren commented over 5 years ago

Hi! We just released a Node.js version of the core library here: https://github.com/publiclab/spectral-workbench.js

I think it'd be possible to take the image data and use the node-canvas module to extract data from an image headlessly; and there are node.js ways to capture from a webcam too. So you could try to run the whole thing offline using just Node.js.

I have an open issue for using node-canvas -- https://github.com/publiclab/spectral-workbench.js/issues/2

I don't know if you code any JavaScript but this seems like a good point to start from. Sounds interesting!

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Comment Author Profile Picture warren commented about 5 years ago

There's now been a lot of work on this via WebValley and @cristoforetti -- take a look at #webvalley posts, and we managed to get it working!

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abdul commented about 5 years ago

@warren is there a chance to write a note about using a raspberry pi and post it as a build? I think others have had interest about this. Did we already do that and the fault is mine for not looking before I responded? lol. Forgive if so.

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Comment Author Profile Picture warren commented almost 4 years ago

Yes, I think that's be great. I'm adding this as a "challenge" on the Spectrometry page, hope someone picks it up. Also see related: https://publiclab.org/notes/warren/09-28-2016/upgrade-a-diy-spectrometer-with-a-raspberry-pi-camera


  
Comment Author Profile Picture warren commented almost 4 years ago

We're also now collecting more info on this page: https://publiclab.org/w/raspberry-pi-spectrometer


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Comment Author Profile Picture warren commented almost 4 years ago

Also see this question on getting data off a Raspberry Pi via keyboard emulation: https://publiclab.org/questions/warren/04-29-2017/getting-a-raspberry-pi-to-output-data-by-emulating-a-keyboard

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