RSS feed for warren


warren 7612 research notes and wiki edits | Admin

The creator of GrassrootsMapping.org and co-founder and Research Director for Public Lab, Jeffrey Warren designs mapping and civic science tools and professionally flies balloons and kites. Notable software he has created include the vector-mapping framework Cartagen and orthorectification tool MapKnitter, as well as open spectral database and toolkit Spectral Workbench.

He is Vice President of the board of the Open Source Hardware Association, on the board of alternative education program Parts and Crafts in Somerville MA, and an advocate of open source software, hardware, and data. He co-founded Vestal Design, a graphic/interaction design firm in 2004, and directed the Cut&Paste Labs project, a year-long series of workshops on open source tools and web design in 2006-7 with Lima designer Diego Rotalde.

Jeff holds an MS from MIT and a BA in Architecture from Yale University, and spent much of that time working with artist/technologist Natalie Jeremijenko, building robotic dogs and stuff. To find out more, visit Unterbahn.com.


Barnstars


71 questions asked

148 answers posted

2530 comments posted



Web Working Group Monthly Recap 6: August 2015

by warren about 2 years ago | 0 | 1,427 | 1

A big month, but almost entirely for Spectral Workbench -- skip to the bottom to see those change...

Read more


Public Lab Boston/Somerville coding meetup @ Parts & Crafts

by warren about 2 years ago | 3 | 2,724 | 2

Hi, all - next week, we'll be hosting a meetup at Parts & Crafts for folks interested in Public L...

Read more


Preview of new Spectrums and Sets pages on Spectral Workbench

by warren over 2 years ago | 0 | 1,252 | 1

Hi, all - I just deployed preview versions of the new Spectral Workbench 2.0 Sets and Spectrums p...

Read more


Prototyping simple paper connections

by warren over 2 years ago | 0 | 2,368 | 1

I'm thinking about easy to make and easy to manufacture paper linkages that require few materi...

Read more



Wavelength range limiting in Spectral Workbench

by warren over 2 years ago | 1 | 1,638 | 0

Just a quick announce -- after [the big revision of Spectral Workbench went live](/notes/warren/0...

Read more


Web Working Group Monthly Recap 5: July 2015

by warren over 2 years ago | 0 | 1,252 | 0

Hello again - a lot has happened since last month's Web Working Group recap, and mostly it's happ...

Read more


Sneak preview of new Spectral Workbench sets display

by warren over 2 years ago | 0 | 1,294 | 0

Check it out here: https://spectralworkbench.org/sets/show2/2446 And see the embed here: <i...

Read more


Silhouette Cameo desktop paper cutter for prototyping

by warren over 2 years ago | 4 | 3,777 | 2

I've been wanting to do more laser cutting to prototype things like the [Oil Testing Kit](/wik...

Read more



Testing the Oil Testing Kit: identifying a "somewhat unknown" sample

by warren over 2 years ago | 4 | 2,519 | 2

I finally made time to test @mathew's [prototype Oil Testing Kit attachment](/notes/mathew/04-07-...

Read more


Testing if light leaks through the walls of the PL Spectrometer v3

by warren over 2 years ago | 2 | 1,390 | 1

Following up on [a note on possible light going through the black cardstock walls of the v3 spect...

Read more


Web Working Group Monthly Recap 4: June 2015

by warren over 2 years ago | 1 | 1,155 | 0

Hello all, happy 4th in advance, and here's our latest recap from PL's Web Working Group: F...

Read more


Low floor, high ceiling for Public Lab research notes

by warren over 2 years ago | 17 | 3,520 | 3

Since the very beginning of Public Lab, we've been aware that we're experimenting with new modes ...

Read more



Web Working Group Monthly Recap 3: May 2015

by warren over 2 years ago | 0 | 1,375 | 0

Web Working Group Monthly Recap 3: May 2015 It's been a quieter month than usual for the Web W...

Read more



Red filters in Infragram Webcams: a test

by warren over 2 years ago | 16 | 2,466 | 1

This test is nowhere near as comprehensive as the big one we did at LEAFFEST a few years ago, but...

Read more


Mobius cameras and smaller balloons

by warren over 2 years ago | 7 | 2,528 | 11

I've been curious about how little helium it'd take to lift a Möbius camera as we've been using f...

Read more



Web Working Group Monthly Recap 2: April 2015

by warren over 2 years ago | 0 | 2,155 | 2

Welcome to the 2nd monthly Web Working Group report! I'm going to try to write faster this time; ...

Read more


Web Working Group Monthly Recap

by warren over 2 years ago | 0 | 1,515 | 3

We've begun tracking prioritization of all Public Lab coding in this Waffle.io board: https://...

Read more


DIY Formaldehyde Test Photo Card

by warren over 2 years ago | 38 | 2,978 | 8

@nshapiro and I are working on a card upon which you can place a colorimetric tube for detecting ...

Read more


Public Lab talk at LibrePlanet 2015: Two Public Labs, and a call for developers

by warren over 2 years ago | 2 | 3,301 | 3

I gave a 10 minute lightning talk at LibrePlanet 2015 this past Saturday, where I discussed the i...

Read more



Automatic placement of images in MapKnitter using GPS metadata

by warren over 2 years ago | 8 | 2,053 | 5

After a long wait, I've finally integrated @xvidun's feature of [automatically placing images](ht...

Read more


Standardizing open source hardware publication practices with contributors.json

by warren over 2 years ago | 11 | 2,073 | 1

Alicia Gibb of OSHWA and I (I'm on their board) cooked up...

Read more


Tutorial video: Installing MapKnitter 2

by warren almost 3 years ago | 0 | 1,746 | 2

To learn to install MapKnitter yourself, [check out this video I just made](http://youtu.be/iGYGp...

Read more


Announcing MapKnitter 2.0

by warren almost 3 years ago | 1 | 10,487 | 7

Hello, mapmakers! The Web Working Group has just launched the final version of MapKnitter 2, i...

Read more



MapKnitter 2: Test Edition

by warren almost 3 years ago | 0 | 2,055 | 2

Hello, mapmakers! The Web Working Group has set up a testing version of MapKnitter 2, integrat...

Read more


Planning for Spectral Workbench 2.0

by warren almost 3 years ago | 24 | 5,873 | 5

Hello Spectral Workbench community! **Do you wish you could ...

Read more


2015 Web Working Group report

by warren almost 3 years ago | 0 | 1,928 | 2

This quarter, we moved all major services into Rackspace hosting, taking full advantage of Pub...

Read more


Dreaming of sensitive friends

by warren about 3 years ago | 1 | 1,767 | 6

I took these portraits in a session at the open water workshop at Propeller, in New Orleans, toni...

Read more



Table for choosing monitoring tools

by warren about 3 years ago | 0 | 1,543 | 5

I spoke with Carl from the EPA at the Engadget Expand conference last Saturday, and we brainst...

Read more


CFL detection by contrast, for auto-calibration

by warren about 3 years ago | 0 | 2,167 | 1

I was thinking we might be able to do a crude but very fast CFL detection by measuring the amo...

Read more


Training in odor identification?

Sara asked about 1 day ago

Answers by warren

Does the Beer Lambert law apply to the opacity of reagents?

Accepted

warren asked about 3 days ago

Answers by warren

answered on Nov 20, 2017 0

answered on Nov 20, 2017 0

Show all 2 answers »

Best PLab demo ideas for a large group?

pdhixenbaugh asked about 10 days ago

Answers by warren

Helium alternative

Accepted

mrw0116 asked about 13 days ago

Answers by warren

How do I assemble the mini-balloon kit?

asnow asked about 16 days ago

Answers by warren

What's happening at the 2017 Barnraising?

warren asked about 20 days ago

Answers by warren

How do I easily set up a Raspberry Pi SD card?

warren asked about 23 days ago

Answers by warren

What sessions would people like to have at the 2017 Barnraising?

warren asked about 28 days ago

Answers by warren

answered on Oct 27, 2017 2

answered on Oct 27, 2017 1

answered on Oct 27, 2017 1

answered on Oct 30, 2017 1

answered on Oct 30, 2017 2

answered on Oct 31, 2017 1

Show all 9 answers »

How do I access the wiki?

partsandcrafts asked about 28 days ago

Answers by warren

How to connect a creative cam notebook with a smartphone?

KushalKC asked about about 1 month ago

Answers by warren

Need your feedback on Tag pages

tommystyles asked about about 1 month ago

Answers by warren

answered on Nov 15, 2017 1

answered on Nov 15, 2017 0

Show all 2 answers »

How big is the filter in the infragram DIY filter pack?

Accepted

robotfarms asked about about 1 month ago

Answers by warren

Has anyone used a RasPi camera in a DIY microscope?

Accepted

bmela asked about about 1 month ago

Answers by warren

What are good sources of cheap bulk giant mylar balloons?

Accepted

warren asked about about 1 month ago

Answers by warren

Is there an offline version of Mapknitter?

Accepted

stevie asked about 2 months ago

Answers by warren

How big are silica particles, in microns?

Accepted

warren asked about 2 months ago

Answers by warren

What should we do at LEAFFEST?

cfastie asked about 2 months ago

Answers by warren

answered on Sep 19, 2017 2

answered on Sep 19, 2017 1

answered on Sep 19, 2017 2

Show all 9 answers »

How can I add credit for main photo on Wiki?

Accepted

Zengirl2 asked about 2 months ago

Answers by warren

What are some sources of new aerial imagery of Harvey damages?

Accepted

warren asked about 2 months ago

Answers by warren

answered on Sep 12, 2017 0

answered on Sep 13, 2017 0

answered on Sep 16, 2017 0

Show all 3 answers »

How do I join a volunteer Disaster Response Team for flooding?

Accepted

warren asked about 3 months ago

Answers by warren

What is the best way to formalize connecting needs with offers?

bsugar asked about 3 months ago

Answers by warren

answered on Sep 08, 2017 0

answered on Sep 08, 2017 0

Show all 2 answers »

How much do different oil pollution tests cost?

Accepted

warren asked about 3 months ago

Answers by warren

What does oil pollution mean for my health?

Accepted

warren asked about 3 months ago

Answers by warren

What could teenagers do to support Harvey response efforts?

Accepted

warren asked about 3 months ago

Answers by warren

How do I collect a sample for laboratory analysis?

Accepted

warren asked about 3 months ago

Answers by warren

How big are smoke particles, in microns?

Accepted

warren asked about 3 months ago

Answers by warren

Calibaration or switching scale?

jayjay70 asked about 3 months ago

Answers by warren

How To Make Time Lapse Spectrometer

Accepted

LightWaveResearch8000 asked about 4 months ago

Answers by warren


How do I install a bootloader on a Riffle data logger?

Accepted

warren asked about 5 months ago

Answers by warren

Assembly completed but the camera doesn't work.

Accepted

1987123 asked about 5 months ago

Answers by warren

Desktop Spectrometry Kit to arduino?

jjoll asked about 5 months ago

Answers by warren

How can we get rid of spam on the main PL page?

marlokeno asked about 5 months ago

Answers by warren

Can anyone help with weather station recommendations?

Accepted

stevie asked about 5 months ago

Answers by warren

Cheap, lightweight GoPro alternatives for aerial mapping?

Accepted

warren asked about 6 months ago

Answers by warren

answered on Jun 12, 2017 0

answered on Jun 14, 2017 0

Show all 5 answers »

How can real-time camera monitoring be set up?

cherylh asked about 6 months ago

Answers by warren

answered on May 16, 2017 0

answered on Jun 19, 2017 0

Show all 4 answers »

What are the health effects related to fine particles of calcium carbonate?

Accepted

stevie asked about 7 months ago

Answers by warren

answered on May 12, 2017 0

answered on May 12, 2017 1

answered on May 16, 2017 0

answered on May 22, 2017 1

Show all 7 answers »

Decibel meters for iPhones?

Accepted

warren asked about 7 months ago

Answers by warren

Is this government security warning on NOAA new?

marlokeno asked about 8 months ago

Answers by warren

Good guides on doing a photo survey of a site?

Accepted

warren asked about 8 months ago

Answers by warren

answered on Mar 14, 2017 0

answered on Mar 14, 2017 0

answered on Apr 10, 2017 0

Show all 4 answers »

JDEPC-OV05 camera intelligent exposure

tim_spec asked about 9 months ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about 10 months ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about 10 months ago

Answers by warren

How to get spectral data in excel or other formats

Accepted

suha asked about 10 months ago

Answers by warren

GoPro Hero HD first version- Making full spectrum( Removing IR filter)

Accepted

suman asked about 10 months ago

Answers by warren

Can you process multiple images at the same time?

JonathanM32 asked about 11 months ago

Answers by warren

orientation of slit vs that of diffraction grating

wlkwong asked about 11 months ago

Answers by warren

Video Infragram

Accepted

jfd asked about 11 months ago

Answers by warren

Ambient/Light Bulb Testing

idev247 asked about 12 months ago

Answers by warren

How do I make a video from a series of photos?

Accepted

warren asked about 12 months ago

Answers by warren

answered on Dec 05, 2016 0

answered on Dec 05, 2016 0

answered on Jul 23, 2017 0

Show all 5 answers »

Spectral Workbench recording time?

Accepted

dhale2 asked about 12 months ago

Answers by warren

Calibration of spectra fails

Paul_P asked about 12 months ago

Answers by warren

Why copy calibration does not apply?

aelobo asked about 12 months ago

Answers by warren

Intensity for spectra too low?

chuynh451 asked about about 1 year ago

Answers by warren

Is there an iPhone app for foldable spectrometer?

CanfieldC asked about about 1 year ago

Answers by warren

Can you share a link to project documentation?

vwls asked about about 1 year ago

Answers by warren

Error on calibrating uploaded spectrum

sarahcm asked about about 1 year ago

Answers by warren

Can anyone help me troubleshoot my NDVI imagery?

abdul asked about about 1 year ago

Answers by warren

How to process images using a mobius with an IR lens?

Accepted

miguel_rosas asked about about 1 year ago

Answers by warren

lightweight air quality sensors for a weather balloon

glenc asked about about 1 year ago

Answers by warren

answered on Oct 12, 2016 0

answered on Jun 19, 2017 0

Show all 2 answers »

how to delete my spectra on Spectral Workbench

redleon asked about about 1 year ago

Answers by warren

Can I upgrade a DIY spectrometer with a Raspberry Pi camera?

warren asked about about 1 year ago

Answers by warren

How can I reduce ambient light inside the Desktop Spectrometry Starter Kit?

Accepted

warren asked about about 1 year ago

Answers by warren

answered on Sep 20, 2016 0

answered on Sep 20, 2016 0

Show all 5 answers »

What's the best way to archive/store a timelapse video?

warren asked about about 1 year ago

Answers by warren

answered on Sep 16, 2016 0

answered on Dec 08, 2016 0

Show all 2 answers »

Has anyone used a timelapse camera in stream monitoring?

stevie asked about about 1 year ago

Answers by warren

Question: What is the Open Source Community's Take the MIT License?

Accepted

nshapiro asked about about 1 year ago

Answers by warren

Does the new Question feature work?

Accepted

warren asked about over 1 year ago

Answers by warren

How to rename a set on Spectral Workbench?

Accepted

AndrewJamesLaplante asked about over 1 year ago

Answers by warren

Question: How do I get the calibration user interface?

Accepted

PeterDH asked about over 1 year ago

Answers by warren

View these maps <a href='//mapknitter.org/profile/warren'>at MapKnitter.org &raquo;</a>

Title Creation date Image