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nshapiro commented on DIY Formaldehyde Test Kit over 4 years ago

Gotcha. In my testing in 2011 i did some of the test and mailed test kits to those i couldn't mee...

mathew commented on DIY Formaldehyde Test Kit over 4 years ago

The vintage timers are probably far too massive. I'm not as worried about tampering as I am abou...

nshapiro commented on DIY Formaldehyde Test Kit over 4 years ago

This is great. The vintage timers are pretty amazing although they add a lot of weight and thus m...

marlokeno commented on Evaluating low-cost optical dust sensors over 4 years ago

This is a wonderful overview-I'm going to have to read it more than once to grasp all of this. I ...

nshapiro commented on DIY Formaldehyde Test Photo Card over 4 years ago

Great. I've ordered the last two as they have the accuracy we need--will report back by the end o...

clayton commented on PLOS One: KAP for... Multi-Spectral Mapping of Intertidal Landscapes over 4 years ago

Wouldn't you still need a spectrometer with you to calibrate the panel every time you go out into...

azaelb commented on NDVI with a key chain camera to use with a mini-drone - Third steps Part A over 4 years ago

Thanks Chris for your comments. "Part B" of these tests is to attach the red filter to the key ch...

shaief commented on 5th Anniversary call for memories! over 4 years ago

Five years old memory: It was 2010, I was a freelance cartographer creating geographic datasets ...

warren commented on DIY Formaldehyde Test Photo Card over 4 years ago

double sided foam tape, maybe? any formaldehyde concerns in the tape itself?

mathew commented on DIY Formaldehyde Test Photo Card over 4 years ago

we can put double sided tape down on the spot-- they remove the cover and stick the tube down. w...

mathew commented on DIY Formaldehyde Test Kit over 4 years ago

following up on our discussion about trying to calibrate the pump without the flow meter-- could ...

trueface commented on Thermal Fishing Bob Development Workshop over 4 years ago

I will be attending!

warren commented on DIY Formaldehyde Test Photo Card over 4 years ago

The tube ought to be taped to the card, I think, so you don't mix it up if you are storing the ca...

ajawitz commented on Aerial Mapping Drone for Under $60? over 4 years ago

Updated 5/15- I added most recent changes to the section entitled "8Bit vs 32Bit?" Even if this...

ajawitz commented on Aerial Mapping Drone for Under $60? over 4 years ago

Thanks for the tip! I have to say, designing the airfoil might've been my favorite part of the w...

nshapiro commented on DIY Formaldehyde Test Photo Card over 4 years ago

It looks like most of the cheap hygrometers are of the coil and dial variety which I worry about ...

warren commented on DIY Formaldehyde Test Photo Card over 4 years ago

Yes, maybe ask Shannon about the budget. The QR code just points at wherewebreathe.org/qr - we ca...

Tbtouaki commented on Red Filter Rising over 4 years ago

Hi I have tried several white balance options before, base on what I've read. On this pics the se...

nshapiro commented on DIY Formaldehyde Test Photo Card over 4 years ago

This looks! great! what do you think the QR code would be? We might need there to be a solid colo...

warren commented on DIY Formaldehyde Test Photo Card over 4 years ago

I think the card could be folded in half, print outward, so the stuff pushes it flat onto the tab...

mathew commented on DIY Formaldehyde Test Photo Card over 4 years ago

One confounding issue is where the card goes in library shipment. I'm looking at foam-lined reus...

warren commented on DIY Formaldehyde Test Photo Card over 4 years ago

OK, cool - i agree vertical orientation will probably work better, and OK, going to go for a lett...

mathew commented on DIY Formaldehyde Test Photo Card over 4 years ago

we should check the accuracy of the digital thermometer-- sometimes they give 3 sig figs but actu...

nshapiro commented on DIY Formaldehyde Test Photo Card over 4 years ago

There we go! working now.

Tbtouaki commented on Red vs. blue filters for NDVI over 4 years ago

Hi Sorry for the trouble but how did you proceed to calibrate individual bands to reflectance bef...

nshapiro commented on DIY Formaldehyde Test Photo Card over 4 years ago

Hey Jeff, The card mock up is 5x8. The alcohol thermo and humidity meter is 9x 2.5 at its thicke...

warren commented on DIY Formaldehyde Test Photo Card over 4 years ago

Hey Nick - can you post the dimensions, or just a photo of the thermometers you have with a ruler...

cfastie commented on Red Filter Rising over 4 years ago

Hi Rita, Your photo above (NIR1_Red3_b.jpg) will not produce very good NDVI. Most of the pixels o...

Tbtouaki commented on Red Filter Rising over 4 years ago

Hi I currently have a modified canon (IR block removed) with a wratten 25A Red filter. My picture...

Thermal Imaging Calibration notes for NYC

by liz almost 8 years ago

NYTimes Op-Ed on open access to NIH-funded research

by warren almost 8 years ago

GIS and balloon mapping at UK

by jeremy almost 8 years ago

indiemapper is now free

by gonzoearth almost 8 years ago

More thermal flashlight images

by warren almost 8 years ago

Barataria Birds

by gonzoearth almost 8 years ago

"I built spy satellites for a living"

by gonzoearth almost 8 years ago

Cit. Sci. from Eye on Earth conf.

by Shannon almost 8 years ago

Kickstarter Rewards

by gonzoearth almost 8 years ago

Thermal crop mapping on a bicycle?

by warren almost 8 years ago

Grassroots Mapping in Butte Goes Analog

by mathew almost 8 years ago

Thermal flashlight tests at the p.irateship

by warren almost 8 years ago







A shared knowledge base for community science

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Community Microscope Kit

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Community Microscope Kit

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community-toolbox

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Test Page

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test2

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soc

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Hurricanes

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Storm response

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