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warren 6908 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.


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Infragram webcam test raw images

by warren over 3 years ago | 2 | 130,520 | 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 over 3 years ago | 1 | 4,044 | 2

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

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Smartphone spectrometer instructions

by warren over 3 years ago | 0 | 2,285 | 0

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

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Public Lab Community Newsletter - August 30, 2013

by warren over 3 years ago | 0 | 1,861 | 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 over 3 years ago | 0 | 2,181 | 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 almost 4 years ago | 0 | 2,444 | 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 almost 4 years ago | 17 | 5,980 | 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 almost 4 years ago | 0 | 1,558 | 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 almost 4 years ago | 1 | 1,742 | 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 almost 4 years ago | 2 | 4,110 | 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 almost 4 years ago | 3 | 4,154 | 0

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

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Smartphone spectrometer molded samples have arrived!

by warren almost 4 years ago | 4 | 3,758 | 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 almost 4 years ago | 8 | 5,396 | 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 almost 4 years ago | 12 | 5,653 | 1

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

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Steampunk spectrometer photos

by warren almost 4 years ago | 0 | 3,124 | 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 almost 4 years ago | 0 | 2,137 | 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 almost 4 years ago | 0 | 4,142 | 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 almost 4 years ago | 4 | 5,709 | 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 almost 4 years ago | 0 | 1,395 | 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 almost 4 years ago | 4 | 5,183 | 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 almost 4 years ago | 0 | 2,054 | 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 almost 4 years ago | 5 | 4,039 | 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 almost 4 years ago | 0 | 1,915 | 1

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

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More Infragram sample webcam tests

by warren almost 4 years ago | 2 | 2,945 | 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 almost 4 years ago | 10 | 3,685 | 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 almost 4 years ago | 1 | 2,844 | 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 almost 4 years ago | 0 | 3,958 | 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 almost 4 years ago | 5 | 3,893 | 1

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

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Smoothing macro using Spectral Workbench API

by warren almost 4 years ago | 0 | 2,231 | 1

We turned off "smoothing" a while ago on the capture interface for [Spectral Workbench](https:...

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How can real-time camera monitoring be set up?

cherylh asked about 15 days ago

Answers by warren

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

Accepted

stevie asked about 19 days 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 about 1 month ago

Answers by warren

Is this government security warning on NOAA new?

marlokeno asked about 2 months ago

Answers by warren

Good guides on doing a photo survey of a site?

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warren asked about 3 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 3 months ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about 4 months ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about 4 months ago

Answers by warren

How to get spectral data in excel or other formats

Accepted

suha asked about 4 months ago

Answers by warren

Can you process multiple images at the same time?

JonathanM32 asked about 5 months ago

Answers by warren

orientation of slit vs that of diffraction grating

wlkwong asked about 5 months ago

Answers by warren

Video Infragram

Accepted

jfd asked about 6 months ago

Answers by warren

Ambient/Light Bulb Testing

idev247 asked about 6 months ago

Answers by warren

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

Accepted

warren asked about 6 months ago

Answers by warren

answered on Dec 05, 2016 0

answered on Dec 05, 2016 0

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Spectral Workbench recording time?

Accepted

dhale2 asked about 6 months ago

Answers by warren

Calibration of spectra fails

Paul_P asked about 6 months ago

Answers by warren

Why copy calibration does not apply?

aelobo asked about 6 months ago

Answers by warren

Intensity for spectra too low?

chuynh451 asked about 7 months ago

Answers by warren

Is there an iPhone app for foldable spectrometer?

CanfieldC asked about 7 months ago

Answers by warren

Can you share a link to project documentation?

vwls asked about 7 months ago

Answers by warren

Error on calibrating uploaded spectrum

sarahcm asked about 7 months ago

Answers by warren

Can anyone help me troubleshoot my NDVI imagery?

abdul asked about 7 months ago

Answers by warren

lightweight air quality sensors for a weather balloon

glenc asked about 8 months ago

Answers by warren

how to delete my spectra on Spectral Workbench

redleon asked about 8 months ago

Answers by warren


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

Accepted

warren asked about 8 months 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 9 months ago

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answered on Sep 16, 2016 0

answered on Dec 08, 2016 0

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Does the new Question feature work?

Accepted

warren asked about 10 months ago

Answers by warren

Question: How to rename a set?

AndrewJamesLaplante asked about 12 months ago

Answers by warren

Question: How do I get the calibration user interface?

PeterDH asked about about 1 year ago

Answers by warren

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

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