RSS feed for warren Preview profile tag system


warren 7273 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, on the advisory board of Personal Democracy Media's WeGov 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



Testing high-brightness 405nm LEDs in fluorescence spectroscopy of oils

by warren over 1 year ago | 5 | 2,340 | 1

After a [great 2015 Barnraising session](/notes/warren/11-30-2015/bolt-and-acrylic-cuvette-hol...

Read more


Web Working Group Monthly Recap 9: December 2015

by warren over 1 year ago | 0 | 693 | 0

Happy new year, folks! This is Recap 9, but we missed the month of November, so we'll be cover...

Read more


A year of Rackspace

by warren almost 2 years ago | 0 | 850 | 3

Some of you may have noticed that at the foot of many Public Lab web pages, we mention [Rackspace...

Read more


Bolt and acrylic cuvette holder research

by warren almost 2 years ago | 0 | 1,389 | 0

I want to try a bolt-and-plate acrylic skeleton for a more rigid attempt at a cuvette holder, ...

Read more



Issues 1-3 of The Barnraiser

by warren almost 2 years ago | 3 | 1,123 | 3

At this year's Barnraising, @patcoyle, @marlokeno, @lombana and I published a dai...

Read more


Barnraising Lightning Talks

by warren almost 2 years ago | 0 | 830 | 0

We heard a bunch of 5-minute presentations after lunch at the Barnraising today; ...

Read more


Oil sample concentration session at Barnraising

by warren almost 2 years ago | 2 | 2,045 | 2

We're having a great discussion on how to concentrate oil samples collected from sheens and other...

Read more


An "open open hardware" development cycle

by warren almost 2 years ago | 4 | 1,696 | 2

Greetings! Starting today, we're adopting a more open, but also more integrated development proce...

Read more



Slit holder for Desktop Spectrometer

by warren almost 2 years ago | 4 | 2,328 | 1

Drawing on input from @stoft (here) and @ygstcu, and ideas @mathew's posted in the...

Read more


Web Working Group Monthly Recap 8: Ocobter 2015

by warren almost 2 years ago | 0 | 682 | 0

Late again this month; apologies! Busy time of year. Let's jump right into it: This is no...

Read more


Week 3: Recap from Oil Testing Kit Beta Program weekly chat

by warren almost 2 years ago | 3 | 1,217 | 0

Hi, all -- we had a quick chat today and folks are preparing samples and troubleshooting the scan...

Read more


Vitamin E fluorescence in some baby oils -- and relevance to the Oil Testing Kit

by warren almost 2 years ago | 0 | 2,668 | 1

Since we use mineral oil in the Oil Testing Kit as a non-fluorescing solvent, I was surprised ...

Read more



LEAFFEST 2015 day one in photos

by warren almost 2 years ago | 2 | 1,089 | 7

We're wrapping up a great first day of LEAFFEST 2015, for which I've prepared a daily publication...

Read more


Web Working Group Monthly Recap 7: September 2015

by warren almost 2 years ago | 0 | 1,161 | 0

This month's work was a bit sporatic (for me, at least) because of the Public Lab staff retreat a...

Read more


Week 2: recap from Oil Testing Kit Beta Program: Assembly and Calibration

by warren almost 2 years ago | 0 | 1,259 | 0

Hi, all - welcome to the Week 2 recap; we just wrapped up the weekly chat and some folks are maki...

Read more


New wavelength calibration procedure preview for Spectral Workbench 2.0

by warren almost 2 years ago | 21 | 3,151 | 1

There's long been talk about a more intuitive, more precise, all-around better wavelength cali...

Read more



Week 1: Recap from Oil Testing Kit Beta Program kickoff chat

by warren almost 2 years ago | 5 | 1,224 | 1

Hi, all - thanks to those who attended the kickoff chat. We'll be meeting in the same place, same...

Read more


Oil Testing Kit Schedule and Kickoff

by warren almost 2 years ago | 1 | 1,294 | 1

Hi, all! We're glad to see that folks are receiving the last part of their OTKs, and starting to ...

Read more


Web Working Group Monthly Recap 6: August 2015

by warren about 2 years ago | 0 | 1,421 | 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 | 2,708 | 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 about 2 years ago | 0 | 1,249 | 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 about 2 years ago | 0 | 2,357 | 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 about 2 years ago | 1 | 1,632 | 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 about 2 years ago | 0 | 1,249 | 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 about 2 years ago | 0 | 1,291 | 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 about 2 years ago | 4 | 3,722 | 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 about 2 years ago | 4 | 2,477 | 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 about 2 years ago | 2 | 1,376 | 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 about 2 years ago | 1 | 1,150 | 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 about 2 years ago | 17 | 3,513 | 3

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

Read more


Is there an offline version of Mapknitter?

stevie asked about 1 day ago

Answers by warren

What should we do at LEAFFEST?

cfastie asked about 3 days ago

Answers by warren

answered on Sep 19, 2017 1

answered on Sep 19, 2017 0

answered on Sep 19, 2017 0

Show all 6 answers »

How can I add credit for main photo on Wiki?

Accepted

Zengirl2 asked about 4 days ago

Answers by warren

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

Accepted

warren asked about 9 days 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 13 days ago

Answers by warren

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

bsugar asked about 14 days 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 14 days ago

Answers by warren

What does oil pollution mean for my health?

Accepted

warren asked about 14 days ago

Answers by warren

What could teenagers do to support Harvey response efforts?

Accepted

warren asked about 14 days ago

Answers by warren

How do I collect a sample for laboratory analysis?

Accepted

warren asked about 14 days ago

Answers by warren

How big are smoke particles, in microns?

Accepted

warren asked about 22 days ago

Answers by warren

Calibaration or switching scale?

jayjay70 asked about 22 days ago

Answers by warren

Just tried to publish a Replication of the KnowFlow and fail ...

MadTinker asked about about 1 month ago

Answers by warren

answered on Aug 03, 2017 0

answered on Aug 03, 2017 1

Show all 5 answers »

How To Make Time Lapse Spectrometer

LightWaveResearch8000 asked about 2 months ago

Answers by warren

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

Accepted

warren asked about 3 months ago

Answers by warren

Desktop Spectrometry Kit to arduino?

jjoll asked about 3 months ago

Answers by warren

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

marlokeno asked about 3 months ago

Answers by warren

Can anyone help with weather station recommendations?

Accepted

stevie asked about 3 months ago

Answers by warren

Cheap, lightweight GoPro alternatives for aerial mapping?

Accepted

warren asked about 4 months ago

Answers by warren

answered on Jun 12, 2017 0

answered on Jun 14, 2017 0

Show all 4 answers »

How can real-time camera monitoring be set up?

cherylh asked about 4 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 4 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 5 months ago

Answers by warren

Is this government security warning on NOAA new?

marlokeno asked about 6 months ago

Answers by warren

Good guides on doing a photo survey of a site?

Accepted

warren asked about 6 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 7 months ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about 8 months ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about 8 months ago

Answers by warren

How to get spectral data in excel or other formats

Accepted

suha asked about 8 months ago

Answers by warren

Can you process multiple images at the same time?

JonathanM32 asked about 9 months ago

Answers by warren

orientation of slit vs that of diffraction grating

wlkwong asked about 9 months ago

Answers by warren

Video Infragram

Accepted

jfd asked about 9 months ago

Answers by warren

Ambient/Light Bulb Testing

idev247 asked about 10 months ago

Answers by warren

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

Accepted

warren asked about 10 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 10 months ago

Answers by warren

Calibration of spectra fails

Paul_P asked about 10 months ago

Answers by warren

Why copy calibration does not apply?

aelobo asked about 10 months ago

Answers by warren

Intensity for spectra too low?

chuynh451 asked about 11 months ago

Answers by warren

Is there an iPhone app for foldable spectrometer?

CanfieldC asked about 11 months ago

Answers by warren

Can you share a link to project documentation?

vwls asked about 11 months ago

Answers by warren

Error on calibrating uploaded spectrum

sarahcm asked about 11 months ago

Answers by warren

Can anyone help me troubleshoot my NDVI imagery?

abdul asked about 11 months ago

Answers by warren

lightweight air quality sensors for a weather balloon

glenc asked about 11 months 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 12 months 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 about 1 year ago

Answers by warren

Question: Using a webcam with a image resolution of 1920x1020

seko asked about about 1 year ago

Answers by warren

Question: How to rename a set?

AndrewJamesLaplante asked about over 1 year ago

Answers by warren

Question: How do I get the calibration user interface?

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