Community research

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...

shanlter commented on Microscope Webcam Conversion over 5 years ago

Thanks @warren, finally I bought at taobao with the price of 1.7USD each. I think you have a pret...

mathew commented on Airpup: designing a kite balloon over 5 years ago

@Ag8n Yes, the Jalbert Kytoons! I covered them and a few other historical kite balloons here: htt...

Ag8n commented on What type of aerosol was used for the calibration of the purpleair lasers? over 5 years ago

The purple air monitors have a low r2 value for the pm10 testing. This may lead to the skewing t...

guolivar commented on Does particle composition that the purple air monitors measure greatly skew the data output? over 5 years ago

Following on @jeffalk answer, please expand on your question. In my opinion (and I've worked in a...

guolivar commented on What type of aerosol was used for the calibration of the purpleair lasers? over 5 years ago

As far as I know Plantower hasn't disclosed that (to be fair, I don't think any of the low-cost m...

exekutive commented on UV measurements over 5 years ago

Are there any materials which fluoresce only under a fairly narrow band around 365nm?

kramadan commented on Outreachy proposal: Planning for expanded community stats system over 5 years ago

Hello! https://github.com/publiclab/plots2/issues/3893

mblumhar commented on Can anyone provide direction for technical problems using the lego spectrometer thanks over 5 years ago

Regular USB webcam works with the raspberry pi so that is another work around. I will find anothe...

jeffalk commented on Why are the PM10 particles of the Purpleair monitor biased so high? over 5 years ago

I'd appreciate learning what in the document you referenced indicates to you that the PM10 is "bi...

jeffalk commented on Does particle composition that the purple air monitors measure greatly skew the data output? over 5 years ago

Hi. Given that you mention "silica" and you are at UW Eau Claire ( western wisconsin sand mining...

jeffalk commented on What type of aerosol was used for the calibration of the purpleair lasers? over 5 years ago

I could be wrong but I do not believe optical particle counters use spectroscopy as the method i...

Cbarnes9 commented on an answer about Why are the PM10 particles of the Purpleair monitor biased so high? over 5 years ago

I found the information about the 640 nm wavelength lasers quite interesting, thank you. I have b...

kelv commented on an answer about What are your thoughts on this initial sketch for a Tag page on PublicLab.org? over 5 years ago

Hey Warren, been working on some stuff for fetching data from your database and placing it on the...

Ag8n commented on Airpup: designing a kite balloon over 5 years ago

In wwii, they had a kytoon ( a mixture kite and balloon for lifting emergency antennas)for downed...

nedhorning commented on Improved DIY NIR camera calibration over 5 years ago

It's worth testing but those cards you link to look promising. From my experience it's the bright...

vanirishdelapena commented on CCD Photodiode Array Spectrometer over 5 years ago

@ddnoob hello sir I was wondering how did you connect the ccd sensor to the arduino uno? any resp...

warren commented on Only seeing part of color spectrum over 5 years ago

Awesome! -- Post to this group at plots-spectometry@googlegroups.com   Public Lab mailing...

warren commented on Does the spectrometer webcam have an IR filter? over 5 years ago

oh super. Keep us updated! On Fri, Nov 9, 2018 at 4:45 PM \<notifications@publiclab.org> w...

MarkE commented on Does the spectrometer webcam have an IR filter? over 5 years ago

Warren, Bronwen, Amanda at publiclab sales has indicated she will send me a replacement webcam, ...

msolomon commented on Only seeing part of color spectrum over 5 years ago

Thank you both for your suggestions! I have it working now.

MarkE commented on Does the spectrometer webcam have an IR filter? over 5 years ago

Warren, I really appreciate your offer to provide a replacement lens! If you do have a spare, my...

Bronwen commented on Does the spectrometer webcam have an IR filter? over 5 years ago

Ooh, I'm just catching up on this thread, but this is really interesting! I have a bunch of the w...

warren commented on Improved DIY NIR camera calibration over 5 years ago

ah, good point. I guess both are relevant. We could distribute them in a dark envelope or folder,...

warren commented on Only seeing part of color spectrum over 5 years ago

Hi, I believe this relates to the angle of your camera in the box. If you try to point it further...

warren commented on Does the spectrometer webcam have an IR filter? over 5 years ago

Whoa! So what is your next step? We might have an extra webcam lens (the type that shipped with i...

warren commented on Outreachy proposal: Planning for expanded community stats system over 5 years ago

Hi, thanks for your proposal!!! Can you link us to some of your initial contributions? Thanks a l...

warren commented on [Outreachy Proposal] Expanding Community Stats System over 5 years ago

Thank you!!

MarkE commented on Does the spectrometer webcam have an IR filter? over 5 years ago

I just received the 4.5mm lens. Unfortunately, it appears that the webcam lens is NOT the standa...

nedhorning commented on Improved DIY NIR camera calibration over 5 years ago

Hi Jeff - I wasn't sure if you mean varying over time or over the surface. Over time both will va...