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 » 3 months 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 » 3 months 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 » 3 months 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...

3 comments » 3 months 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 » 3 months 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 » 3 months 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 » 3 months ago

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 » 3 months ago

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 » 3 months 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 » 3 months ago

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...

7 comments » 3 months 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 » 3 months ago

cfastie commented on How to verify generated NDVI Images?

These two sets of equations do not do the same thing. Set 1. var ndvi = 255 * (b - r) / (1...

10 comments » 3 months ago

cfastie commented on Mini Pearl Jam

I checked on the Mini Pearl logger in the compost pile today and swapped SD cards. It was still l...

2 comments » 3 months ago

warren commented on The Squid and the Rok

Great advice on the "tilting" fix -- this affected one of Liz's squids and we struggled to adjust...

3 comments » 3 months ago

MadTinker commented on Build KnowFlow: automatic water moniter

@liz Sounds great. I think there are three parts and I'll probably ask for advice on posting as t...

59 comments » 3 months ago

warren commented on MapKnitter Annotations Plugin: Preliminary Specification

Deleted some spam!

4 comments » 3 months ago

shanlter commented on Build KnowFlow: automatic water moniter

@MadTinker, awesome!! I'm trying to get familiar with Public Lab's logic as well, I guess the bes...

59 comments » 3 months ago

saangpe commented on Graze anatomy

You could give more details about how to process the images with Fiji and tried to replicate this...

8 comments » 3 months ago

warren commented on Collaboratively write the new Pocket Guide to Grassroots Mapping

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

3 comments » 3 months ago

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

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

35 comments » 3 months ago

MadTinker commented on Build KnowFlow: automatic water moniter

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

59 comments » 3 months ago

sid commented on Red vs. blue filters for NDVI

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

32 comments » 4 months ago

rockets commented on Build KnowFlow: automatic water moniter

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

59 comments » 4 months ago

david_uwi commented on Simple data logger

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

8 comments » 4 months ago

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

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

7 comments » 4 months ago

liz commented on Simple data logger

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

8 comments » 4 months ago

shanlter commented on Build KnowFlow: automatic water moniter

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

59 comments » 4 months ago

MadTinker commented on Build KnowFlow: automatic water moniter

@shanlter A little confused about what you used for EC. The KnowFlow spec sheets indicates a DF...

59 comments » 4 months ago

kingston312ricky commented on Why is 'peer-to-peer' file sharing useful? Should I put effort into learning how to do it?

Awesome explained, and this is very helpful! I use cloud storage usually for everything, and for ...

4 comments » 4 months ago