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warren 7883 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 served from 2015-17 as Vice President of the board of the Open Source Hardware Association, is 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


84 questions asked

175 answers posted

2608 comments posted



Introducing a Lego Spectrometer

by warren about 20 hours ago | 0 | 163 | 0

We've been making and distributing [Do-It-Yourself spectrometers](http://store.publiclab.org/coll...

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Assembling the Public Lab Lego Spectrometer

by warren 1 day ago | 0 | 230 | 2

Follow these steps to assemble a Lego Spectrometer, for use with the Raspberry Pi...

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Software outreach: Codes of conduct and friendliness

by warren 1 day ago | 0 | 40 | 0

This is part 2 in our Software Outreach series -- and I wanted to note...

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Embed a Q&A system on another website

by warren 8 days ago | 0 | 76 | 1

Our Q&A system is based at https://publiclab.org/questions -- ...

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Help document how to connect different sensors to a data logger

by warren 8 days ago | 0 | 112 | 1

We have a range of data logger projects on the site, most of which are Ardu...

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Build a papercraft spectrometer for your phone -- version 2.0

by warren 14 days ago | 0 | 298 | 1

After a few years, we're returning to one of our oldest kits to update and improve it, building o...

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Make a narrow slit for a DIY spectrometer out of paper

by warren 20 days ago | 1 | 223 | 2

Spectrometers (see #spectrometry) require a narrow slit for light to pass through, so you can get...

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Use Git and GitHub to contribute and improve Public Lab software

by warren 22 days ago | 0 | 103 | 0

Public Lab software is written in many languages, and each project may have its own guidelines fo...

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Draft: Find the concentration of a liquid with a DIY spectrometer

by warren 23 days ago | 3 | 235 | 1

If you have a solution of unknown concentration -- for example, a water sample that's greenish or...

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What questions will you bring to the Barnraising? (Part II)

by warren about 1 month ago | 0 | 91 | 2

The Barnraising starts tomorrow morning! We're all super excited. At the [past ...

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Software outreach: a blog series

by warren about 2 months ago | 0 | 200 | 3

Since early 2016, Public Lab has worked to [make our open source software projects more welcomi...

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Join DocCom -- the Barnraising 2017 documentation committee, and publish the Barnraiser!

by warren about 2 months ago | 0 | 116 | 1

Greetings, DocCom members, and other Barnraising attendees! What is DocCom, ...

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Scan and compare different gases (in discharge tubes, like neon) using a DIY spectrometer

by warren about 2 months ago | 0 | 276 | 2

A common classroom activity I remember is to scan different excited gases (safely inside glass tu...

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Set up a Mobius Action Cam for timelapse

by warren about 2 months ago | 0 | 150 | 2

The Mobius Action Cam is used in the Infragram Point & Shoot, and ...

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Change the white balance (or other configuration) on a Mobius camera

by warren about 2 months ago | 0 | 150 | 2

This is part of the documentation of the Infragram Point & Shoot b...

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Getting started with infrared photography on Infragram.org

by warren about 2 months ago | 0 | 188 | 1

This tutorial walks through working with images on Infragram.org, which is an ea...

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Update firmware on the Mobius Action Cam

by warren about 2 months ago | 0 | 133 | 1

If you're having trouble setting the white balance on your Mobius Action Cam (used in the [Infrag...

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Install a filter or change the lens in a Mobius Action Cam

by warren about 2 months ago | 0 | 171 | 2

This activity shows how to install a custom filter and/or change the lens in the Infragram Point ...

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Learn to kite map a marsh: an October 21st workshop at Tidmarsh Farms

by warren 2 months ago | 0 | 377 | 1

Hi, folks - in response to Glorianna Davenport's [request for help](https://publiclab.org/notes/w...

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Request for kite/balloon mapping help at Tidmarsh Farms wetlands restoration in Plymouth MA

by warren 3 months ago | 0 | 171 | 1

A LOT of events are coming up across the Public Lab network, folks -- this one on Saturday, Octob...

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What questions will you bring to the Barnraising?

by warren 3 months ago | 0 | 144 | 2

At the past two Barnraisings, in Morgantown, West Virginia ( #west-virginia ) and...

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Wrapping up Google Summer of Code 2017 at Public Lab

by warren 3 months ago | 1 | 170 | 3

Hi, everyone! This past week we wrapped up our fourth year of Google Summer of Code (see #gsoc), ...

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Draft: Collect a sample for laboratory analysis

by warren 3 months ago | 1 | 145 | 2

This is a draft, adapted from the DIY Oil Testing guide, authored wi...

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Report-back from second Open Call on Hurricane Harvey response and coordination

by warren 3 months ago | 0 | 132 | 1

We again had an Open Call yesterday on the topic of Harvey response and ~6+ pe...

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Web Working Group Update 20: August 2017

by warren 3 months ago | 1 | 138 | 1

Missed posting an update last month as I was traveling for a few weeks, but happy to be back for ...

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Report-back from Open Call on Hurricane Harvey response and coordination

by warren 4 months ago | 3 | 247 | 2

We had an Open Call today on the topic of Harvey response and 12+ people atten...

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Remove lens distortion from photos with FisheyeGL

by warren 4 months ago | 6 | 224 | 3

FisheyeGL is a new online tool for removing lens...

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Setting up the Raspberry Pi Camera for Wireless Streaming

by partsandcrafts 11 days ago | 7 | 192 | 2

For a full overview of this project, go to [Raspberry Pi Microscope Build](https://publiclab.org/...

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Water Quality Regulations, Testing Methods, Health Risks & Advocacy

by gilbert about 2 months ago | 7 | 270 | 0

![](https://lh6.googleusercontent.com/HfUlIUzOTPmJWnFZkKyj6sNxwBPjdNSzigqlre700SYxvKo3BLAoQ83BdBi...

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Introducing Image Sequencer: a pure JavaScript non-destructive image processing library for Node, browser and command line

by ccpandhare about 2 months ago | 0 | 287 | 1

_This past summer, myself, Chinmay led a project (mentored by Jeff) as part of Google Summer of C...

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Practicing a PM hotspot survey in New Auburn, WI

by mathew 8 months ago | 5 | 302 | 2

Attempting a Hotspot survey in New Auburn, WI with: @Stevie, @Gretchen, @Warren, @marlokeno, Jonn...

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Getting started with the Infragram Point and Shoot

by abdul about 1 year ago | 3 | 739 | 3

So you've just opened your Infragram Point & Shoot! You'll notic...

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Assemble a DIY Papercraft Spectrometer

by abdul about 1 year ago | 2 | 4,012 | 5

These instructions will guide you through the assembly process of the foldable paper spectromet...

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Desktop Spectrometry Starter Kit 3.0 Assembly Instructions

by abdul about 1 year ago | 5 | 4,094 | 6

These instructions will guide you through the assembly process of the desktop spectrometer. Th...

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Common low-cost technique limitations and strategies for impact

by gretchengehrke about 1 year ago | 1 | 649 | 2

With an environmental and environmental health focus, many people coming to Public Lab may be loo...

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What goes into choosing a topic name?

by liz about 1 year ago | 2 | 407 | 3

_above: sketch of figuring out how to organize "air" into a research area, and which methods are ...

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Can we use a timelapse or video camera to monitor particulate air plumes?

by gretchengehrke about 1 year ago | 0 | 528 | 3

We've been reading about ASTM D7520, or the **Standa...

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Zero dark thirsty: Capturing replenishing nighttime rain events with a trail camera

by cfastie about 1 year ago | 7 | 655 | 5

Above: LEAFFESTers observing the deployment of a trail camera (arrow) near a small stream. J...

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Q&A enables automated FAQ

by liz over 1 year ago | 0 | 457 | 1

Asking and answering questions is at the very heart of Public Lab. It's how we get started, it's ...

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Activity Categories

by gretchengehrke over 1 year ago | 8 | 495 | 3

A bunch of people here in our community are interested in making our collective work more organiz...

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Check out these Activity Grids

by liz over 1 year ago | 8 | 1,534 | 8

The sheer number of posts on publiclab.org by contributors from all over the world about 1) h...

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DIY Oil Testing Toolkit: Graphic Template Release!

by mlamadrid over 1 year ago | 0 | 1,049 | 2

Hello! I have uploaded a template version of the book design for the DIY Oil Testing Toolkit. It'...

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Comment piece in Nature about peer review

by liz over 1 year ago | 43 | 961 | 3

_Jean-Baptiste Colbert Presenting the Members of the Royal Academy of Science to Louis XIV (oil o...

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Intended Purposes for Different Tools and Techniques

by gretchengehrke about 2 years ago | 6 | 2,030 | 11

(Note: have a better name for this? Please suggest it!) Environmental data can be used fo...

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Ideas on opening "open hardware"

by liz about 2 years ago | 8 | 1,163 | 4

Hey folks, this is a line of thought that needs your input! Legend has it that two LEAFFES...

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Plan for recording Shinyei optical sensors using Open Pipe Kit

by mathew over 2 years ago | 13 | 3,731 | 3

the goal is to read and save the raw output of a [Shinyei PPD42](/notes/Willie/04-01-2014/field-...

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Valuing two modes of Public Lab activities

by liz almost 3 years ago | 5 | 2,553 | 2

Lead image by DVDP Ever come across this s...

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"Less is more: The Role of Small Data in 21st Century Governance."

by donblair about 3 years ago | 2 | 2,614 | 2

A few months back, Diego Rafael Canabarro had graciously invited Catherine D'Ignazio, Jeff Warren...

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The Water Hackathon Report

by stevie about 3 years ago | 0 | 2,218 | 0

There were several water events that were held over last week in New Orleans that encompassed...

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Graded oils using UV fluorescence

by mathew about 3 years ago | 22 | 3,718 | 1

Me and @Warren are trying to replicate [the heavy to light sorting of oils,](/notes/mathew/09-1...

Read more


2011 Barataria Bay mapping fieldnotes, maps, mapping tracks, images

by Shannon over 3 years ago | 0 | 2,511 | 0

When writing an intro to the upcoming Barataria mapping publication, I came across a Google Doc l...

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Better communicate the purpose of research notes

by liz over 3 years ago | 3 | 2,167 | 2

Better communicate what research notes are for. This could be a static illustration as @warren...

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Thermal Fishing Club

by liz over 3 years ago | 8 | 1,067 | 4

Connect the activity of thermal fishing with existing communities of expertise, i.e. fishermen...

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State of the Science: The Oil Testing Kit

by mathew over 3 years ago | 3 | 1,981 | 3

I sat down with @warren to record a video presentation on the state of the [oil testing kit ](ht...

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Hardware design work for the Oil Testing Kit

by mathew over 3 years ago | 13 | 4,294 | 2

A hardware sketch of our favorite configuration is above. _This is a jointly authored research n...

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Recap: July 31 New Orleans oil testing meetup

by stevie over 3 years ago | 23 | 4,000 | 3

Last night we held a meetup (organized by Stevie) to work on the emerging [Oil Testing Kit](/wiki...

Read more


Open Hour on Water Quality, Monday July 21, 8pm

by donblair over 3 years ago | 2 | 1,345 | 0

Hey Folks! Tonight, July 21st, at 8 PM It's a Google Hangout -- so, everywhere! ...

Read more












What do I need to get started with the Community Kits program?

Accepted

warren asked about 6 days ago

Answers by warren

Where can microscope lenses (objectives) be bought?

warren asked about 6 days ago

Answers by warren

Noise when Trying to Analyze Spectrum

matthart610 asked about 9 days ago

Answers by warren

What are different commercially available hydrogen sulfide detection methods?

Accepted

warren asked about 10 days ago

Answers by warren

answered on Dec 04, 2017 0

answered on Dec 04, 2017 0

answered on Dec 04, 2017 0

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How to select a site for hydrogen sulfide testing?

warren asked about 16 days ago

Answers by warren

answered on Nov 28, 2017 0

answered on Dec 04, 2017 0

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How can we safely try out and evaluate a hydrogen sulfide test?

warren asked about 16 days ago

Answers by warren

answered on Nov 28, 2017 0

answered on Nov 28, 2017 0

answered on Dec 04, 2017 0

answered on Dec 04, 2017 0

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Training in odor identification?

Sara asked about 22 days ago

Answers by warren

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

Accepted

warren asked about 24 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 about 1 month ago

Answers by warren

Helium alternative

Accepted

mrw0116 asked about about 1 month ago

Answers by warren

How do I assemble the mini-balloon kit?

asnow asked about about 1 month ago

Answers by warren

What's happening at the 2017 Barnraising?

warren asked about about 1 month ago

Answers by warren

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

warren asked about about 1 month ago

Answers by warren

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

warren asked about about 2 months 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 about 2 months ago

Answers by warren

How to connect a creative cam notebook with a smartphone?

KushalKC asked about about 2 months ago

Answers by warren

Need your feedback on Tag pages

tommystyles asked about about 2 months 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?

Accepted

robotfarms asked about 2 months ago

Answers by warren


Has anyone used a RasPi camera in a DIY microscope?

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bmela asked about 2 months ago

Answers by warren

What are good sources of cheap bulk giant mylar balloons?

Accepted

warren asked about 2 months ago

Answers by warren


Is there an offline version of Mapknitter?

Accepted

stevie asked about 3 months ago

Answers by warren

How big are silica particles, in microns?

Accepted

warren asked about 3 months ago

Answers by warren

What should we do at LEAFFEST?

cfastie asked about 3 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?

Accepted

Zengirl2 asked about 3 months ago

Answers by warren

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

Accepted

warren asked about 3 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?

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

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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

Water Filter Effectiveness

Mempet asked about 3 months ago

Answers by warren

How big are smoke particles, in microns?

Accepted

warren asked about 4 months ago

Answers by warren

Calibaration or switching scale?

jayjay70 asked about 4 months ago

Answers by warren

Starlight Recorder KIC8462852

LightWaveResearch8000 asked about 5 months ago

Answers by warren

How To Make Time Lapse Spectrometer

Accepted

LightWaveResearch8000 asked about 5 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 6 months ago

Answers by warren

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

marlokeno asked about 6 months ago

Answers by warren

How do I cheaply do long-term outdoor timelapses?

warren asked about 6 months ago

Answers by warren

Can anyone help with weather station recommendations?

Accepted

stevie asked about 6 months ago

Answers by warren

Cheap, lightweight GoPro alternatives for aerial mapping?

Accepted

warren asked about 7 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 7 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

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Decibel meters for iPhones?

Accepted

warren asked about 8 months ago

Answers by warren

Is this government security warning on NOAA new?

marlokeno asked about 9 months ago

Answers by warren

Good guides on doing a photo survey of a site?

Accepted

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 10 months ago

Answers by warren

DIY methods for nitrate detection in food?

fez asked about 11 months ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about 11 months ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about 11 months ago

Answers by warren

How to get spectral data in excel or other formats

Accepted

suha asked about 11 months ago

Answers by warren

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

Accepted

suman asked about 11 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 12 months ago

Answers by warren

Video Infragram

Accepted

jfd asked about about 1 year ago

Answers by warren

How to convert the csv or xml files to spectrum graph?

soheilkh asked about about 1 year ago

Answers by warren

How do you get the Crenova Game and Trail Hunting Camera into time-lapse mode?

Accepted

stevie asked about about 1 year ago

Answers by warren

answered on Dec 07, 2016 0

answered on Feb 03, 2017 0

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Ambient/Light Bulb Testing

idev247 asked about about 1 year ago

Answers by warren

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

Accepted

warren asked about about 1 year 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 about 1 year ago

Answers by warren

Calibration of spectra fails

Paul_P asked about about 1 year ago

Answers by warren

Why copy calibration does not apply?

aelobo asked about about 1 year 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?

Accepted

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 over 1 year ago

Answers by warren

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

Accepted

nshapiro asked about over 1 year ago

Answers by warren

Does the new Question feature work?

Accepted

warren asked about over 1 year ago

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How to rename a set on Spectral Workbench?

Accepted

AndrewJamesLaplante asked about over 1 year ago

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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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