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shanlter commented on Build KnowFlow: automatic water moniter

Hi @MadTinker , yes you are right, the battery I'm using is the one in your link. But you can use...

38 comments » about 23 hours ago

briankruse commented on Assembly completed but the camera doesn't work.

Hello, I have a similar problem. The camera initially worked, but has stopped after maybe ten mi...

1 comments » 1 day ago

MadTinker commented on Build KnowFlow: automatic water moniter

@shantler I'm probably missing something, but the battery shown in the link in the components lis...

38 comments » 2 days ago

gretchengehrke commented on What are ways to record ambient temperature every 5 sec and export easily?

@carohowe, Agreed! I read a paper a while ago (which I can't seem to find now) that demonstrated ...

5 comments » 2 days ago

eustatic commented on What do you do if your environmental concern is linked to your neighbor's paycheck?

it depends on the degree of retaliation a company is willing to pursue. it's easiest to fire the...

1 comments » 2 days ago

New edit by liz

Events

Changes »

2 days ago | 0 | 4

suman commented on Introducing the calibration plugin for ImageJ/Fiji

Hello Ned, I tried using different exposure settings now, and its working, the pixels aren't satu...

35 comments » 2 days ago

shanlter commented on Monitor transparency, dissolved oxygen, ORP, and ammonia from a river

Hi @gretchengehrke, sorry for responding late, I was in a temple with no internet access in the p...

4 comments » 3 days ago

carohowe commented on What are ways to record ambient temperature every 5 sec and export easily?

Thanks @gretchengehrke -- that's definitely what we're looking into! So many of DC's food deserts...

5 comments » 3 days ago

carohowe commented on Seeking DC-area folks interested in building temperature sensors for urban heat island measurement

Thanks so much @liz @stevie and @bronwen for your input. Liz, I think it's a fantastic idea to us...

5 comments » 3 days ago

MadTinker commented on Build KnowFlow: automatic water moniter

@shantler @rockets FWIW- came home today with a mailbox literally full of 'stuff'. Also, many tha...

38 comments » 4 days ago

bronwen commented on What are some options for low cost methane monitoring?

This article is behind a paywall, but some of the tools/methods listed might be worth doing some ...

2 comments » 4 days ago

gretchengehrke commented on What are ways to record ambient temperature every 5 sec and export easily?

Hi @carohowe, this sounds like an interesting project! In addition to broadly looking at the impa...

5 comments » 4 days ago

liz commented on Software for mapping trees?

Hi Sebastian, i know OpenTreeMap is quite a big platform at this point, but considering how many ...

3 comments » 4 days ago

New page by stevie

Microscope

4 days ago | 0 | 0

stevie commented on Seeking DC-area folks interested in building temperature sensors for urban heat island measurement

Hi! The I See Change project was in Harlem not DC, but it might be a good example to check out.

5 comments » 4 days ago

nedhorning commented on Introducing the calibration plugin for ImageJ/Fiji

Hi Suman - Using Analyze => Measure should work. It's not uncommon to have high pixel values for ...

35 comments » 4 days ago

Redstone Rig 2.0

by cfastie 5 days ago | 2 | 0

warren commented on Web-based fisheye-removal prototype for correcting lens distortion

Actually i'm pretty jazzed for the possibility of some of actually doing the lens correction for ...

18 comments » 5 days ago

warren commented on Seeking DC-area folks interested in building temperature sensors for urban heat island measurement

@stevie was talking about a project with ISeeChange.org in DC -- Stevie, did you have a link, or ...

5 comments » 5 days ago

New edit by warren

Data Logging

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5 days ago | 0 | 1

warren commented on "Use or calibrate calibration" dont show my reference CFL already calibrated

Hi, can you link to the spectra you're talking about so we can see? Thanks!

1 comments » 5 days ago

BaptisteLeSergent commented on ramanPi - The 3D Printable Raspberry Pi Raman Spectrometer

Hello, Like Garret said a few days ago, we can't access the hackaday website anymore. Does anyon...

35 comments » 5 days ago

suman commented on Introducing the calibration plugin for ImageJ/Fiji

Dear Ned Horning, I calculated image calibration coefficients, using the reflectance data from d...

35 comments » 6 days ago

cfastie commented on Web-based fisheye-removal prototype for correcting lens distortion

I tried with a photo from a PowerShot S100. That's the only camera I have other than the Mobius t...

18 comments » 6 days ago

warren commented on Mobius non-fish eye and small lifter wrapup

Hi, @patcoyle - managed (with some help) to get the web-based lens distortion removal system work...

2 comments » 6 days ago

warren commented on Web-based fisheye-removal prototype for correcting lens distortion

OK - the GoPro clones can be corrected with: a: 1, b: 1, Fx: 0.16, Fy: 0.16, scale: 1.087, x: 1,...

18 comments » 6 days ago

cfastie commented on Mini Pearl Jam

The Mini Pearl Logger in the compost pile stopped logging today when the battery voltage dropped ...

2 comments » 8 days ago

warren commented on Web-based fisheye-removal prototype for correcting lens distortion

This was solved today by SpaVec! https://github.com/jywarren/fisheyegl/issues/3#issuecomment-315...

18 comments » 8 days ago

New edit by stevie

Stormwater Monitoring

Changes »

8 days ago | 0 | 1

Software for mapping trees?

Post an answer

Question by icarito 9 days ago | 3 | 1

New edit by engineeredgreenhouses1

Moderation

Changes »

9 days ago | 0 | 2

New edit by liz

community development

Changes »

9 days ago | 0 | 2

ccpandhare commented on How to verify generated NDVI Images?

Hi Chris! I tested this image. Had the same results. I them made an improvement to the older algo...

10 comments » 9 days ago

New edit by Shannon

Public Lab Nonprofit Team

Changes »

10 days ago | 0 | 6

gretchengehrke commented on EDDI - Eletrodialysis Desalinator for Desalination

@mienaikoe, This is so cool! How quickly can you process a liter of sea water? Also, you mentione...

1 comments » 10 days ago

gretchengehrke commented on Monitor transparency, dissolved oxygen, ORP, and ammonia from a river

@shanlter, this is great! Have you seen the spreadsheet on the www.publiclab.org/wiki/water-senso...

4 comments » 10 days ago

New edit by liz

community development

Changes »

10 days ago | 0 | 2

liz commented on A Questions page to encourage discussions through better UX

Hi @siyuan , i just posted this github issue about what seems to be redundant clutter on the /que...

5 comments » 10 days ago

warren commented on Sparkfun data logging troubleshooting?

Hi! sorry I missed this -- are you using a Raspberry Pi to run OpenPipeKit? If so, are you sure i...

5 comments » 12 days ago

Image is blue - First time

Answered

Post an answer

Question by LightWaveResearch8000 12 days ago | 1 | 0

How accurate are KnowFlow probes?

Answered

Post an answer

Question by rockets 13 days ago | 2 | 1

New page by warren

Mapping Requests

16 days ago | 0 | 0

New page by warren

Mapping Requests Template

16 days ago | 0 | 0

New page by gilbert

remote-sensing

17 days ago | 0 | 1

New page by stevie

Sensor enclosures

19 days ago | 0 | 0

New page by liz

protest-mapping

20 days ago | 0 | 0

New page by liz

KnowFlow

22 days ago | 0 | 2

New page by stevie

Water Sensors

22 days ago | 0 | 2

New page by warren

Pi Camera

about 1 month ago | 0 | 1




A shared knowledge base for community science

New edit by liz 2 days ago - changes

Events

New page by stevie 4 days ago

Microscope

New edit by warren 5 days ago - changes

Data Logging

New edit by stevie 8 days ago - changes

Stormwater Monitoring

New edit by liz 9 days ago - changes

community development

New edit by Shannon 10 days ago - changes

Public Lab Nonprofit Team

New edit by liz 10 days ago - changes

community development

New page by warren 16 days ago

Mapping Requests

New page by warren 16 days ago

Mapping Requests Template

New page by gilbert 17 days ago

remote-sensing

New page by stevie 19 days ago

Sensor enclosures

New page by liz 20 days ago

protest-mapping

New page by liz 22 days ago

KnowFlow

New page by stevie 22 days ago

Water Sensors

New page by warren about 1 month ago

Pi Camera

More »