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Thanks @warren, finally I bought at taobao with the price of 1.7USD each. I think you have a pret...
@Ag8n Yes, the Jalbert Kytoons! I covered them and a few other historical kite balloons here: htt...
The purple air monitors have a low r2 value for the pm10 testing. This may lead to the skewing t...
Following on @jeffalk answer, please expand on your question. In my opinion (and I've worked in a...
As far as I know Plantower hasn't disclosed that (to be fair, I don't think any of the low-cost m...
Are there any materials which fluoresce only under a fairly narrow band around 365nm?
Hello! https://github.com/publiclab/plots2/issues/3893
Regular USB webcam works with the raspberry pi so that is another work around. I will find anothe...
I'd appreciate learning what in the document you referenced indicates to you that the PM10 is "bi...
Hi. Given that you mention "silica" and you are at UW Eau Claire ( western wisconsin sand mining...
I could be wrong but I do not believe optical particle counters use spectroscopy as the method i...
I found the information about the 640 nm wavelength lasers quite interesting, thank you. I have b...
Hey Warren, been working on some stuff for fetching data from your database and placing it on the...
In wwii, they had a kytoon ( a mixture kite and balloon for lifting emergency antennas)for downed...
It's worth testing but those cards you link to look promising. From my experience it's the bright...
@ddnoob hello sir I was wondering how did you connect the ccd sensor to the arduino uno? any resp...
Awesome! -- Post to this group at plots-spectometry@googlegroups.com Public Lab mailing...
oh super. Keep us updated! On Fri, Nov 9, 2018 at 4:45 PM \<notifications@publiclab.org> w...
Warren, Bronwen, Amanda at publiclab sales has indicated she will send me a replacement webcam, ...
Thank you both for your suggestions! I have it working now.
Warren, I really appreciate your offer to provide a replacement lens! If you do have a spare, my...
Ooh, I'm just catching up on this thread, but this is really interesting! I have a bunch of the w...
ah, good point. I guess both are relevant. We could distribute them in a dark envelope or folder,...
Hi, I believe this relates to the angle of your camera in the box. If you try to point it further...
Whoa! So what is your next step? We might have an extra webcam lens (the type that shipped with i...
Hi, thanks for your proposal!!! Can you link us to some of your initial contributions? Thanks a l...
Thank you!!
I just received the 4.5mm lens. Unfortunately, it appears that the webcam lens is NOT the standa...
Hi Jeff - I wasn't sure if you mean varying over time or over the surface. Over time both will va...
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edie_blues commented on an answer about What do you think about this new design sketch for a Welcome page? over 5 years ago
Hello again @warren :) Two quick questions: is it possible to upgrade my account to a moderato...