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Public Lab Nonprofit Team

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New edit by Shannon

Public Lab Nonprofit Team

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SoC ideas

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Germany

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The Barnraiser

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Pipeline Monitoring

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Topics

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New page by warren

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Air Quality

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New edit by kamau19

Air Quality

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New edit by kamau19

Air Quality

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New page by warren

ammonia

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nitrites

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New page by warren

nitrates

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New page by stevie

Pipeline Monitoring

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Frac Sand Reporting

11 days ago | 0 | | 0

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Providence Public Lab code fellowship

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New page by warren

mapknitter-test

13 days ago | 0 | | 0

New page by warren

Nitrogen

13 days ago | 0 | | 1

New page by warren

Simple Air Sensor

14 days ago | 0 | | 2

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

It's good you discovered that. Yesterday I started to write about the need to subtract the blue b...

isak_hannisdal commented on turbidity_sensing about 1 month ago

Where can I find the arduino code: riffle_turbidity.ino?

Corymbia commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

Hi, I have some trouble previewing my processed DNG images in Matlab, but the channel values are ...

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

I used this following dcraw command: dcraw -D -W -4 Image1.ORF to create this image which has be...

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

I have to run out now but will try to make time to check this in the morning. It's also possible...

Corymbia commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

Sure, I've just uploaded ORF files for all three images to the google drive (link at the end of m...

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

Can you post one of your RAW images? I looked at Image1.dng and that shows the Bayer pattern so i...

Corymbia commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

How do you make sure the white balancing step is omitted? I tried that myself (see table 3 and fi...

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

I use RAW pixel values for calibration analysis and since white balance doesn't impact RAW values...

Corymbia commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

Thanks, I will try! One more problem I noticed yesterday was that (at least when I set the white...

EdMallon commented on An Arduino Based UnderWater Sensor Platform about 1 month ago

A high-school teacher friend asked us for faster build that is less dependent on soldering becaus...

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

The calibration coefficients are, in the simplest case, the slope and y-intercept of the linear r...

Corymbia commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

Thanks for the advice. How are the calibration coefficients calculated? I need to take photos of ...

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

If you're using them for calibration you should be fine taking photos of the targets every so of...

warren commented on How do I build the Deluxe Microscope Kit about 1 month ago

And apologies for the slow reply; we have been gearing up for the Barnraising this week! https://...

warren commented on How do I build the Deluxe Microscope Kit about 1 month ago

Hello! We've put all the instructions up at http://publiclab.org/micro, for the various versions ...

belkinsa commented on Dissolved Oxygen Testing and Citizen Science about 1 month ago

Thank you @MadTinker, I updated the page with that info, hopefully it's right.

MadTinker commented on Dissolved Oxygen Testing and Citizen Science about 1 month ago

@belkinsa I’d strongly suggest the Winkler test for monitoring DO. It’s easy, can be done reliab...

belkinsa commented on Dissolved Oxygen Testing and Citizen Science about 1 month ago

Sorry for the delay. I was thinking that the data could be used for monitoring rather than educat...

Corymbia commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

I realised that my tiles may be too shiny and grabbed some matt paint samples (pieces of matt pap...

warren commented on MapKnitter map of Giant Salvinia Bayou st John Winter 2019 about 1 month ago

Beautiful map, Scott!

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

I just read over Rob Sumner's RAW guide and see Adobe DNG Converter is free. It also looks like h...

nedhorning commented on Testing a Midopt DB660/850 filter: NIR contamination of the red channel about 1 month ago

The tables look great. Before the end of the week I'll try to compare your converted image with o...

warren commented on The Tags page mockup - let me know what you think! about 1 month ago

I'd also like to reconnect with the design discussions that are ongoing for other pages, in part...

joyofsoy commented on What tools or methods do you use to monitor odors? about 1 month ago

Twitter user @RosaAriasAlv sent us this response to the Public Lab tweet: For sure we are! We a...

midol commented on an answer about What type of aerosol was used for the calibration of the purpleair lasers? about 1 month ago

some PMS5003 distributors specify that Mie scattering is used

jeffalk commented on How to start air monitoring project? about 1 month ago

Hi @kahlilkochiyama and @shannonkmcalpine, I just searched for air quality in Gardena, Ca, and f...

Fluorescent classroom lights

by sncato 5 months ago | 0 | | 0

Classroom light

by evan_r_geary 5 months ago | 0 | | 0

DIY conductivity Sensors

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Question by roberts_ecofarm 5 months ago | 6 | | 3

Call for Outreachy 2018-19 proposals!

by warren 5 months ago | 13 | | 2

Using the Soil Sampling Toolkit

by Bronwen with jjcreedon 5 months ago | 2 | | 4

Airpup: designing a kite balloon

by mathew 5 months ago | 9 | | 5

Water flow sensor for shower?

by marmdavis 5 months ago | 3 | | 1

Crop field

by arron710 5 months ago | 0 | | 0

Cheap multispectral camera

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Question by maykef 5 months ago | 16 | | 1

Test question [Don't mark as spam]

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Question by gauravano 6 months ago | 4 | | 1

Introducing Pi Builder

by icarito with warren 6 months ago | 3 | | 6

Logging firewood

by cfastie 6 months ago | 0 | | 2







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New edit by Shannon 28 minutes ago - changes

Public Lab Nonprofit Team

New edit by Shannon 28 minutes ago - changes

Public Lab Nonprofit Team

New edit by divyabaid16 about 8 hours ago - changes

SoC ideas

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Germany

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The Barnraiser

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Pipeline Monitoring

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Topics

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Topics

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Air Quality

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Air Quality

New edit by kamau19 4 days ago - changes

Air Quality

New page by warren 6 days ago

ammonia

New page by warren 6 days ago

nitrites

New page by warren 6 days ago

nitrates

New page by stevie 7 days ago

Pipeline Monitoring

New page by stevie 11 days ago

Frac Sand Reporting

New page by warren 13 days ago

mapknitter-test

New page by warren 13 days ago

Nitrogen

New page by warren 14 days ago

Simple Air Sensor

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