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Getting rid of Cats-Claw Vines

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Alternative solar materials

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Choosing a method for Particulate Matter Monitoring

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Agrotóxicos en Cosquín - Argentina

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cfastie commented on anyone working on dataloggers for snow depth? 2 months ago

The sunlight is not an issue. For a winter-long monitoring goal, a few measurements every day are...

MadTinker commented on anyone working on dataloggers for snow depth? 2 months ago

Thanks Chris, unfortunately we generally have sunny weather so a laser is generally out. In addi...

cfastie commented on anyone working on dataloggers for snow depth? 2 months ago

I tried one of those little six dollar laser rangefinders (vl53lox) for measuring distance to sno...

bansal_sidharth2996 commented on My upcoming transition 2 months ago

Best of luck

New page by joyofsoy

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2 months ago

stevie commented on Microscope not focusing right 2 months ago

Hi Macapola, thanks for posting. Just adding in the photo of your setup. Can you share a video...

david_uwi commented on Homemade spectrometer 2 months ago

SPEC2018-2-.bmp This is the circuit diagram

warren commented on Exploring with the Simple Air Sensor 2 months ago

OMG this is the best, Scott :-) Hey i'll be in NOLA next friday for a week!  -- ig: @unterbahn...

eustatic commented on Exploring with the Simple Air Sensor 2 months ago

I did this with a Lighter and a Public Lab card, thanks to Stevie. Set the Public Lab card on a ...

warren commented on Microscope not focusing right 2 months ago

Hi, @Meculus and @macapola - the other element that may be causing trouble is the light. If you a...

wln215 commented on anyone working on dataloggers for snow depth? 2 months ago

This post got me thinking weather it's possible to use the kind of technology laser range finders...

lev29 commented on 85 lux 2 months ago

Dear biozanco, I've only just started to review the Public Lab entries on NDVI images and how the...

TC1994 commented on What is the spectral resolution of a Raspberry Pi camera spectrometer? 2 months ago

Thank you for your answer :)

cfastie commented on anyone working on dataloggers for snow depth? 2 months ago

I think a laser rangefinder might work well for this. Put it on a pole and point it downward to m...

MadTinker commented on How to collect a water sample 2 months ago

We take two different samples: one sample is used for local chemistry analysis (alkalinity, pH, h...

stevie commented on How to collect a water sample 2 months ago

Thanks @MadTinker! Question for you - The sample bottles I found here are a little smaller than o...

MadTinker commented on How to collect a water sample 2 months ago

Nice explanation. I do this a few times a month and this is the same procedure accepted in Colora...

TC1994 commented on Horticultural Spectrometer - Assembly III 2 months ago

Hi @jenjimah, thank you so much for sharing your work. I have a question, did this final assembly...

nanocastro commented on Nuestros Suelos: a low-cost toolkit for the participative assessment of soil degradation 2 months ago

Hola Si, estamos trabajando desde hace ya un tiempo con Fernan. Estaría buenísimo si pudiéramos c...

macapola commented on Microscope not focusing right 2 months ago

HI! I have the same problem, did you find any solutions?

drewc228 commented on PMS7003 with Arduino MEGA2560 2 months ago

Hi @vinushi1995..did you get your project working? I am having a similar problem with the PMS7003...

Meculus commented on Microscope not focusing right 2 months ago

I can get it to focus somewhat, but with an onion skin (the main thing I tried), and try to focus...

566303 commented on Assembling the Simple Air Sensor 2 months ago

We are having some issues with our sensor. It does turn green around clean air, but it only turns...

stevie commented on Build a plant-based air purifier 2 months ago

That makes sense! Thanks for clarifying. On Wed, Jan 15, 2020 at 7:22 PM \<notifications@publ...

warren commented on WHATS THE PRICE OF THE SPECTROMETER 3? 2 months ago

Hi, we have a few different options here! https://store.publiclab.org/collections/spectrometry

lev29 commented on How can I make IR photos derived from various cutoff useful for creating NDVI (normalized difference vegetation index) images? 2 months ago

Thank you, Chris! You've given me much to read and think about, but please, don't misconstrue tha...

cfastie commented on How can I make IR photos derived from various cutoff useful for creating NDVI (normalized difference vegetation index) images? 2 months ago

Using green foliage (or chlorophyll) to set a custom white balance deserves more consideration th...

cfastie commented on How can I make IR photos derived from various cutoff useful for creating NDVI (normalized difference vegetation index) images? 2 months ago

The goal of the custom white balance hack is to fool the camera into wildly exaggerating the brig...

lev29 commented on How can I make IR photos derived from various cutoff useful for creating NDVI (normalized difference vegetation index) images? 2 months ago

Thank you so much, Chris! With respect to what to use as a reference to calibrate the White Balan...

cfastie commented on How can I make IR photos derived from various cutoff useful for creating NDVI (normalized difference vegetation index) images? 2 months ago

If your K610 filter is a cutoff filter that passes wavelengths greater than 610nm and blocks shor...

lev29 commented on How can I make IR photos derived from various cutoff useful for creating NDVI (normalized difference vegetation index) images? 2 months ago

Thank you, Chris, for helping to clarify my question. In fact, as you suspected, I was misusing t...

My upcoming transition

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New edit by joyofsoy 29 days ago - changes

PurpleAir

New edit by joyofsoy 29 days ago - changes

OpenHour Archive

New edit by joyofsoy 29 days ago - changes

OpenHour Archive

New edit by joyofsoy 29 days ago - changes

OpenHour Archive

New edit by joyofsoy 29 days ago - changes

OpenHour

New edit by joyofsoy 29 days ago - changes

OpenHour Archive

New edit by joyofsoy 29 days ago - changes

OpenHour Archive

New edit by liz 29 days ago - changes

Board of Directors

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sandbox-sitemap

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Inline maps

New page by warren about 1 month ago

Inline maps examples

New page by ExtinctAnimals about 1 month ago

Getting rid of Cats-Claw Vines

New page by warren about 1 month ago

Alternative solar materials

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sentinel

New page by joyofsoy about 2 months ago

vrf

New page by xose about 2 months ago

Agrotóxicos en Cosquín - Argentina

New page by joyofsoy 2 months ago

jobs

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