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warren 7621 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.


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71 questions asked

148 answers posted

2530 comments posted



An overview of the PublicLab.org website

by warren about 4 years ago | 0 | 1,623 | 1

<iframe width="640" height="480" src="//www.youtube.com/embed/gf804ucVYQ0" frameborder="0" allowf...

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Infragram webcam test raw images

by warren about 4 years ago | 2 | 130,578 | 2

At LEAFFEST 2013, we wanted to do a rigorous test of all the [webcams we've bee...

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Open Hardware Summit talk: Building communities one kit at a time

by warren about 4 years ago | 1 | 4,183 | 2

I gave a talk today at the Open Hardware Summit about how to strengthen ...

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Smartphone spectrometer instructions

by warren about 4 years ago | 0 | 2,310 | 0

For the Kickstarter Smartphone Spectrometers, [Mathew](/profile/m...

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Public Lab Community Newsletter - August 30, 2013

by warren about 4 years ago | 0 | 1,871 | 0

(_Above, an aerial image taken at last year's [Extreme Citizen Science balloon mapping](http://uc...

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Huentek Infragram Webcam tests

by warren about 4 years ago | 0 | 2,200 | 0

Just got a batch of 4 webcams from the Korean company Huentek; Here's the HU203, and I'll post mo...

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Results from Aug 25, 2013 Tidmarsh Farms mapping

by warren about 4 years ago | 0 | 2,464 | 0

Glorianna Davenport and Gershon Dublon [hosted a mapping meetup](https://www.eventbrite.com/event...

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Infragrammar with HSV color model

by warren over 4 years ago | 17 | 6,170 | 1

A new idea that evolved [in this thread](https://github.com/Pioneer-Valley-Open-Science/infragram...

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Public Lab Community Newsletter - August 23, 2013

by warren over 4 years ago | 0 | 1,565 | 0

Happy Friday, Public Lab! Lots happening this week between updates on two Kickstarters, hundreds ...

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Public Lab sessions @ Mozfest, Oct 25-7 2013

by warren over 4 years ago | 1 | 1,765 | 0

Mozfest, or the Mozilla Festival, is an annual "future of the web" festiva...

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New boxes for balloon mapping kits

by warren over 4 years ago | 2 | 4,139 | 2

After an extended design process and a very long time actually getting these produced, we finally...

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Infragram webcam conversion test with I Zone cameras

by warren over 4 years ago | 3 | 4,192 | 0

Ongoing tests of candidates for the [Infragram Webcam](http://kickst...

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Smartphone spectrometer molded samples have arrived!

by warren over 4 years ago | 4 | 3,793 | 2

We are now making final plastics decisions and setting up the final run of 1000! Just wanted to s...

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Infragrammar: compositing infrared images with simple mathematic expressions

by warren over 4 years ago | 8 | 5,488 | 0

Don Blair and I had been chatting about making an in-browser JavaScript-b...

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White balancing a Canon camera for Infragram photography

by warren over 4 years ago | 12 | 5,781 | 1

Chris Fastie has already [covered this in great detail](/notes/cfastie/06-17-...

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Steampunk spectrometer photos

by warren over 4 years ago | 0 | 3,135 | 0

Just posting some nice almost-complete photos of the Steampunk Spectrometers from the Kicksta...

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Public Lab community growth, Dec 2010-Aug 2013

by warren over 4 years ago | 0 | 2,146 | 0

I occasionally go through our traffic tracking graphs on Google Analytics, and though this might ...

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Comparative and qualitative flame spectroscopy

by warren over 4 years ago | 0 | 4,179 | 1

The lead image is from three photos on [Wikipedia's article on flame testing](https://en.wikipedi...

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Importing spectra from NIST and WebMineral.com to Spectral Workbench

by warren over 4 years ago | 4 | 5,787 | 2

Note: this may now be possible more easily using [the JSON/CSV upload feature of Spectral Wor...

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Improvements and additions to the new website

by warren over 4 years ago | 0 | 1,403 | 0

The past few weeks have seen a number of small improvements to the site, and I wanted to highligh...

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Design for coffee spectrometer

by warren over 4 years ago | 4 | 5,274 | 2

Based on the [ideas I was brainstorming a few days ago](/notes/warren/08-06-2013/brainstorming-co...

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Smartphone spectrometer molds being machined

by warren over 4 years ago | 0 | 2,074 | 1

Louis from ProtoEdge just sent me these great photos of the aluminum mold...

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Brainstorming "coffee analytics" system for coffee shops

by warren over 4 years ago | 5 | 4,086 | 1

Lots of folks have talked about using spectrometers in coffee shops, and I know several of our [c...

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Infragram.org web-based NDVI processor launched

by warren over 4 years ago | 0 | 1,931 | 1

Although many folks are using Ned Horning's [Photo Monitoring Plugin](/wik...

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More Infragram sample webcam tests

by warren over 4 years ago | 2 | 2,962 | 0

Following up on my recent posts on Infragram tests, I just received ...

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Improvements in Infragram NDVI with test cameras

by warren over 4 years ago | 10 | 3,708 | 0

I'd had [a lot of trouble](/notes/warren/06-18-2013/continuing-difficulties-with-infrablue-in-che...

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Modifications and tweaks for flare spectrometry

by warren over 4 years ago | 1 | 2,869 | 1

Down in Chalmette, Louisiana, [folks have been using DIY spectrometers to try to detect light fro...

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Smartphone spectrometer now available on Shapeways

by warren over 4 years ago | 0 | 3,997 | 1

As the smartphone spectrometer is going into production, we're also posting the most recent 3d pr...

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Proposal: SLR spectrometer attachment

by warren over 4 years ago | 5 | 3,920 | 1

Lots of folks have talked about doing a higher-end spectrometer attachment based on an SLR lens m...

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Training in odor identification?

Sara asked about 2 days ago

Answers by warren

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

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warren asked about 4 days ago

Answers by warren

answered on Nov 20, 2017 0

answered on Nov 20, 2017 0

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Best PLab demo ideas for a large group?

pdhixenbaugh asked about 12 days ago

Answers by warren

Helium alternative

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mrw0116 asked about 14 days ago

Answers by warren

How do I assemble the mini-balloon kit?

asnow asked about 18 days ago

Answers by warren

What's happening at the 2017 Barnraising?

warren asked about 21 days ago

Answers by warren

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

warren asked about 25 days ago

Answers by warren

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

warren asked about 29 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

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How do I access the wiki?

partsandcrafts asked about 29 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

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

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robotfarms asked about about 1 month ago

Answers by warren

Has anyone used a RasPi camera in a DIY microscope?

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bmela asked about about 1 month ago

Answers by warren

What are good sources of cheap bulk giant mylar balloons?

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warren asked about about 1 month ago

Answers by warren

Is there an offline version of Mapknitter?

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stevie asked about 2 months ago

Answers by warren

How big are silica particles, in microns?

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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

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How can I add credit for main photo on Wiki?

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Zengirl2 asked about 2 months ago

Answers by warren

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

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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

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

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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

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How much do different oil pollution tests cost?

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warren asked about 3 months ago

Answers by warren

What does oil pollution mean for my health?

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warren asked about 3 months ago

Answers by warren

What could teenagers do to support Harvey response efforts?

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warren asked about 3 months ago

Answers by warren

How do I collect a sample for laboratory analysis?

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warren asked about 3 months ago

Answers by warren

How big are smoke particles, in microns?

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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

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LightWaveResearch8000 asked about 4 months ago

Answers by warren


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

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warren asked about 5 months ago

Answers by warren

Assembly completed but the camera doesn't work.

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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?

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stevie asked about 5 months ago

Answers by warren

Cheap, lightweight GoPro alternatives for aerial mapping?

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warren asked about 6 months ago

Answers by warren

answered on Jun 12, 2017 0

answered on Jun 14, 2017 0

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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

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

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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

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Decibel meters for iPhones?

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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?

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warren asked about 9 months ago

Answers by warren

answered on Mar 14, 2017 0

answered on Mar 14, 2017 0

answered on Apr 10, 2017 0

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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

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suha asked about 10 months ago

Answers by warren

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

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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 12 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?

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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

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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

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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?

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warren asked about about 1 year ago

Answers by warren

answered on Sep 20, 2016 0

answered on Sep 20, 2016 0

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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

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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?

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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>

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