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mathew commented on Airpup: designing a kite balloon about 1 month 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? about 1 month 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? about 1 month 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? about 1 month 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 about 1 month 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 about 1 month ago

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

mblumhar commented on Can anyone provide direction for technical problems using the lego spectrometer thanks about 1 month 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? about 1 month 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? about 1 month ago

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

Ag8n commented on Airpup: designing a kite balloon about 1 month 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 about 1 month 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 about 1 month 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 about 1 month 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? about 1 month 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? about 1 month 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 about 1 month ago

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

MarkE commented on Does the spectrometer webcam have an IR filter? about 1 month 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? about 1 month 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 about 1 month ago

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

warren commented on Does the spectrometer webcam have an IR filter? about 1 month 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 about 1 month 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 about 1 month ago

Thank you!!

MarkE commented on Does the spectrometer webcam have an IR filter? about 1 month 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 about 1 month ago

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

mathew commented on Airpup: designing a kite balloon about 1 month ago

As a system, the balloon and kite parts are definitely lifting more than dragging-- Airpup climbs...

cfastie commented on Airpup: designing a kite balloon about 1 month ago

That sounds like a lot of lift in a good wind. Does that come mostly from the kite part or from t...

mathew commented on Airpup: designing a kite balloon about 1 month ago

I should clarify that air adds mass not weight-- but a massive balloon is sluggish.

mathew commented on Airpup: designing a kite balloon about 1 month ago

@cfastie Yes, Airpup's lift increases with the wind. I didn't measure the pull in 20mph winds, bu...

warren commented on Microscope Webcam Conversion about 1 month ago

Hi! It's this one or one very like it! Awesome!

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cfastie commented on Airpup: designing a kite balloon about 1 month ago

Mathew, The Airpup can lift a payload of 500 grams when there is no wind. Will it lift more when...

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infrapi

about 2 months ago | 0 | | 0

Creating Public Lab's Logic Model

by liz 3 months ago | 0 | | 0

MapKnitter map of Collado Villalba

by imvec 3 months ago | 2 | | 1

NDVI Numerical Values

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Question by AgtechMan 3 months ago | 1 | | 0

Software Freedom Day in NIT Hamirpur

RSVP

Event by souravirus 3 months ago | 9 | | 4

MapKnitter map of Local Area

by lakehavasu 3 months ago | 0 | | 0

Mesh PCB making workshop by Reacción

RSVP

Event by dbsnp 3 months ago | 1 | | 2

Cintia's Spectrum

by blas0145 3 months ago | 0 | | 0

build of the microscope kit

by luglimbe 3 months ago | 1 | | 5




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