| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| winksaville | "The following links appear to be broken: https://www.maxmax.com/images/Cameras/Technical/Canon_40D_Response_CurveB.jpg http://www.khufkens.com/wp..." | Read more » | over 1 year ago | |||
| ramprasadraju1998 | "Model Papers 2020 " | Read more » | about 5 years ago | |||
| phibli | "@jenjimah I also struggled with this and give your workaround using OBS a go. Let's see...keep you posted! :) @warren has anyone tried to use the ..." | Read more » | over 5 years ago | |||
| jenjimah | "Yes when you see the live webcam feed on pi.local, you're basically just accessing a website which is streaming the pi camera video, so it doesn't ..." | Read more » | over 5 years ago | |||
| warren | "Hi, i think your message somehow got deleted? But i got it by email. Actually the Pi camera doesn't connect to a computer by USB as a webcam in ge..." | Read more » | over 5 years ago | |||
| warren | "Hi, thanks for posting your question. There are some answers here: https://publiclab.org/questions/cedarlodge/02-27-2018/uploading-images-from-rasp..." | Read more » | over 5 years ago | |||
| jpschaaf | "I never really knew much about spectrometers (and still don't) but I happened on an article about green laser pointers which mentioned that a numbe..." | Read more » | almost 7 years ago | |||
| Swede2 | "Oh, that's great. I'm glad the comment was useful. If you are satisfied with your hand built version, I'd recommend ordering the desktop version. I..." | Read more » | almost 7 years ago | |||
| warren | "Ooh, good question on the camera! Post a question at #spectrometry and i know people have tried a lot of cameras! " | Read more » | almost 7 years ago | |||
| jpschaaf | "By the way, thanks for mentioning the use of electrical tape. Applying that suggestion took my attempt to build one from nearly worthless to vague..." | Read more » | almost 7 years ago | |||
| warren | "There may also be some mis-auto-focusing by the smartphone camera. Over-exposure too, but also try getting the focus to lock on the more detailed l..." | Read more » | almost 7 years ago | |||
| stef | "Your image is way over exposed. You should be aware that this is an entry level project. The desk top is also used to stimulate discussion. Please..." | Read more » | almost 7 years ago | |||
| Swede2 | "I'm adding one more discovery. I had been using a CD-R for the window because I have plenty of scrap versions of them. I decided to sacrifice a DV..." | Read more » | almost 7 years ago | |||
| warren | "That's so awesome, @sanchittechnogeek -- did it go smoothly for you? any trouble, or improvements you made? " | Read more » | about 7 years ago | |||
| sanchittechnogeek | "Created a spectrometer! :) here are the pics below! " | Read more » | about 8 years ago | |||
| warren | "Ah, i see you've already approached this topic, sorry to repeat! " | Read more » | about 8 years ago | |||
| iamkat | "Ah that's really helpful to know, thank you! " | Read more » | about 8 years ago | |||
| cfastie | "Thanks for the details. After you use a CFL to calibrate the spectrometer, replace the CFL with another light source. If the spectrometer is not d..." | Read more » | about 8 years ago | |||
| iamkat | "Hi Chris, what do you mean by a standard lycopene extraction? The UV spec of lycopene in ether can be found here http://link.springer.com/article/..." | Read more » | about 8 years ago | |||
| cfastie | "Kat, Do you have a standard lycopene extraction? How do know what the spectrum of lycopene should look like? Are you using a fluorescent lamp to ..." | Read more » | about 8 years ago | |||
| warren | "Wow, this is super impressive!!! " | Read more » | over 8 years ago | |||
| khufkens | "There are three variables in this setup: 1) the light source's output, which needs to be characterized or idealized (you could use the sun as a re..." | Read more » | over 9 years ago | |||
| warren | "Uh, perhaps I am not fully understanding on my initial readthrough, but since we have a big need to characterize sensitivity in the webcams we use ..." | Read more » | over 9 years ago | |||
| khufkens | "If I can back out the spectral response I'll post it online for sure. So give it some time. " | Read more » | over 9 years ago |