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New page by bhamster

Filtering microplastics from sand

8 days ago

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Air sample lab testing

14 days ago

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sandbox-air-lab-testing

17 days ago

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Nurdle survey

30 days ago

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30 days ago

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sandbox-advocacy

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about 1 month ago

cfastie commented on What's the best way to attach a camera to a balloon? over 3 years ago

Here is an easy camera rig you can build yourself. A parts list and complete instructions for ...

guolivar commented on an answer about Is it important to account for humidity using optical particulate matter monitors? over 3 years ago

You're right, the effect of humidity would be to change the "apparent" size but it's not just inc...

warren commented on Collaboratively write the new Pocket Guide to Grassroots Mapping over 3 years ago

Saw some great suggestions -- i also added a "wind scale" table riffing on the Beaufort scale, wi...

MadTinker commented on Build KnowFlow: automatic water moniter over 3 years ago

@shantler @rockets et al... FWIW - I ordered the (majority) of the parts needed for a KnowFlow re...

Garret commented on ramanPi - The 3D Printable Raspberry Pi Raman Spectrometer over 3 years ago

The links to the hackaday website are no longer functional. Does anyone know of a working websit...

MadTinker commented on Sensor: ORP versus PH over 3 years ago

@gretchengehrke Thanks! That's kinda what I thought, but wasn't sure. I'll likely end up with bot...

gretchengehrke commented on Sensor: ORP versus PH over 3 years ago

Hi @MadTinker, oxidation-reduction potential (ORP) and power of hydrogen (pH) measure different c...

Sidney_AstroPlant commented on an answer about AstroPlant RPi sensory system over 3 years ago

Using NIR LEDs seems like a good option to look into and I'm happy to hear that I might not have ...

liz commented on Build KnowFlow: automatic water moniter over 3 years ago

Hi @xose , @shantler did create a method page, and this now appears there as an activity! Check i...

MadTinker commented on Build KnowFlow: automatic water moniter over 3 years ago

@rockets Thanks for the summary. I thought I was going to have to move in a different direction,...

jeffalk commented on an answer about Is it important to account for humidity using optical particulate matter monitors? over 3 years ago

My quick perusal of the attached pdf didn't find anything about effects of humidity. What you ...

cfastie commented on Red vs. blue filters for NDVI over 3 years ago

Sid, Pretty big difficulties. The sensor does not know what hit it. Each pixel produces a value ...

sid commented on Red vs. blue filters for NDVI over 3 years ago

This is excellent work here! I was wondering how software could help eliminate the tedious task ...

ramarro commented on Build KnowFlow: automatic water moniter over 3 years ago

@shanlter i havent wrote anything about my project its just an hobbies for my aquarium :) @rock...

cfastie commented on an answer about AstroPlant RPi sensory system over 3 years ago

A simple option might be to turn on some NIR LEDs when the photography happens. The NIR:VIS ratio...

rockets commented on Build KnowFlow: automatic water moniter over 3 years ago

DFR0504_Analog_Isolation_Module-V1.0-_Schematic.pdf here is the schematic of the isolator.

shanlter commented on Build KnowFlow: automatic water moniter over 3 years ago

Thanks @rockets! I hope this could help answering your questions, @ramarro. btw, The GUI of your ...

rockets commented on Build KnowFlow: automatic water moniter over 3 years ago

I just try translate youyou's answer into english. Q:The parts for the KnowFlow-esque are going ...

Sidney_AstroPlant commented on an answer about AstroPlant RPi sensory system over 3 years ago

The kit is fully enclosed with LED with a certain blue and red ratio (I have to verify what the e...

david_uwi commented on Simple data logger over 3 years ago

Thanks for bringing this to prominence again. I will attach the code that runs the microprocessor...

stevie commented on an answer about Is it important to account for humidity using optical particulate matter monitors? over 3 years ago

Hi Jeff, thanks! This is great. I'll copy the question link into that email chain as well. Think ...

stevie commented on an answer about Is it important to account for humidity using optical particulate matter monitors? over 3 years ago

Wow. These are awesome resources!! Thanks for clarifying the seeing/sizing distinction.

liz commented on A Questions page to encourage discussions through better UX over 3 years ago

hi @siyuan , I'm excited to help you get whatever other information you need to ideate and sketch...

liz commented on Simple data logger over 3 years ago

Thanks for this super work @david_uwi ! I tagged this note so that it appears with the other data...

ramarro commented on Build KnowFlow: automatic water moniter over 3 years ago

@shanlter i think that DFR EC will be better than what i use, at least after a brief look to the ...

shanlter commented on Build KnowFlow: automatic water moniter over 3 years ago

Yes, you got it :) @MadTinker If you want to use DFRobot's EC sensor, you'd better test your samp...

shanlter commented on Build KnowFlow: automatic water moniter over 3 years ago

@ramarro, you tried so many stuff! Thanks for the info on EC, I am learning it. Lots of the quest...

guolivar commented on Is it important to account for humidity using optical particulate matter monitors? over 3 years ago

Yes, environmental conditions do affect the ability of an optical sensor, not too much to "see" a...

MadTinker commented on Build KnowFlow: automatic water moniter over 3 years ago

@shanlter @ramarro Dang, got lost in the comments .... my bad.

ramarro commented on Build KnowFlow: automatic water moniter over 3 years ago

@MadTinker, @shanlter use DFRobot EC probe. I am using EC_mini_v31 we are two different person ...

The weTable and CHARM

by jacobsimonson about 9 years ago

Foothills Community Garden NRG Imagery

by gonzoearth about 9 years ago

Waterkeeper BP oil spill one year report

by Shannon about 9 years ago

Video tutorial: Intro to MapKnitter.org

by warren about 9 years ago

Plume spectrometry test in Garfield County

by warren about 9 years ago

Battlement Mesa Concerned Citizens Bucket Brigade

by warren about 9 years ago

EPA hazard review of toxic chemicals stalled

by Shannon about 9 years ago

Hydrogen sulfide sensing brainstorm

by warren about 9 years ago

Open Hardware SCHOLARSHIP - deadline sept 14th

by warren about 9 years ago





A shared knowledge base for community science

New edit by stevie 2 days ago - changes

Public Lab Nonprofit Team

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Software

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Software overview

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Developers

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Software overview

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Chat

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Chat

New page by bhamster 14 days ago

Air sample lab testing

New page by bhamster 17 days ago

sandbox-air-lab-testing

New page by bhamster 30 days ago

Nurdle survey

New page by liz 30 days ago

test

New page by liz 30 days ago

test

New page by liz 30 days ago

sandbox-advocacy

New page by sashadev-sky about 1 month ago

test

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