| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "This is so exciting to see. @stef, would you be willing to post a response using the "Document your attempt to build this" button above the builds ..." | Read more » | about 7 years ago | |||
| warren | "This could be a few things, but the simplest is that you built a spectrometer with the camera rotated 180 degrees from the way it should be in the ..." | Read more » | about 7 years ago | |||
| warren | "Can you link to your data directly? I think it's possible higher resolution could help, but there may also be other resolution issues such as the ..." | Read more » | about 7 years ago | |||
| warren | "Yes, that sounds right. I think the remaining issue was that unfortunately it wasn't clear if the RPi camera can be accessed via the browser webcam..." | Read more » | over 7 years ago | |||
| warren | "Related question here: https://publiclab.org/notes/warren/09-28-2016/upgrade-a-diy-spectrometer-with-a-raspberry-pi-camera " | Read more » | over 7 years ago | |||
| warren | "Very interested to see this, kudos! We've had some difficulties finding standard ways to disable exposure compensation on webcams, and there's been..." | Read more » | over 7 years ago | |||
| warren | "Oh great! Do check out this node.js lib designed originally for work in a raspberry pi! https://github.com/publiclab/spectral-workbench.js " | Read more » | over 7 years ago | |||
| warren | "Hello @xose! Very glad to meet you over audio today. I came across this: https://quitter.se/notice/8940101 And was very excited to see it -- woul..." | Read more » | over 7 years ago | |||
| warren | "Well, the compensation is based on the sensitivity of the semiconductor, mostly (i believe). I think you could try to block the wavelengths that ar..." | Read more » | over 7 years ago | |||
| warren | "Hi, it looks like your spectrum is quite blurry -- see the examples in the activity here: https://publiclab.org/n/13410 Do you think you need to w..." | Read more » | over 7 years ago | |||
| warren | "I'm sorry - the tag should be #gain-control -- and although I don't have time myself at this point to do a live chat, you could perhaps ask on the ..." | Read more » | over 7 years ago | |||
| warren | "https://github.com/publiclab/spectral-workbench.js is the core JavaScript modules which could be easier to run in isolation as well -- it's used in..." | Read more » | over 7 years ago | |||
| warren | "Yes, there is CSV, XML, and JSON data download for each spectrum. It's on the lower left side of the screen in a grey bar. Hope that helps! " | Read more » | over 7 years ago | |||
| warren | "Hi, there are some steps for intensity calibration outlined in #exposure-calibration, but they're not that easy to follow -- we would love if you'd..." | Read more » | over 7 years ago | |||
| warren | "The raw spectra these DIY devices produce are not absolute calibrated per-color, so they may be more sensitive to blue than red. You could either i..." | Read more » | over 7 years ago | |||
| warren | "There's some guidance here, but it may be out of date: https://publiclab.org/wiki/spectral-workbench-usage#Webcam+configuration -- this'd be a good..." | Read more » | over 7 years ago | |||
| warren | "Ah, Chris reminds me of an additional way to control camera gain control -- use a camera, like the Raspberry Pi camera, where you can more tightly ..." | Read more » | over 7 years ago | |||
| warren | "Oh, interesting -- curious about your lux meter --- cost or link to buy one? You could use it perhaps to confirm that you're reading equal amounts ..." | Read more » | over 7 years ago | |||
| warren | "Hi, I think the spectrum comparisons would be relatively straightforward -- but keep in mind that the kit requires a calibrated reference light to ..." | Read more » | over 7 years ago | |||
| warren | "I believe this is a bug; the JavaScript console shows: application-0add8749179623a04221903b025c601c.js:57 parsing calibrate:92343#25653 applicatio..." | Read more » | over 7 years ago | |||
| warren | "very cool! Also see the newer prototype I did a while back -- high hopes for it to be a bit more robust: https://publiclab.org/wiki/foldable-spec#U..." | Read more » | over 7 years ago | |||
| warren | "That's so cool! Thanks, please do -- " | Read more » | over 7 years ago | |||
| warren | "Oh, interesting -- what types of bulbs were they? " | Read more » | over 7 years ago | |||
| warren | "Great idea to constrain and track this down -- it might make a good new question in its own right, esp. if it's a common issue (which seems likely)..." | Read more » | over 7 years ago |