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warren 8054 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.


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96 questions asked

191 answers posted

2680 comments posted



MapKnitter update: very high resolution mapping

by warren about 1 hour ago | 0 | 16 | 0

For the first time in a while, we've updated MapKnitter.org -- after the...

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Pre-order the community written Pocket Guide to Grassroots Mapping

by warren 2 days ago | 3 | 66 | 2

This 3.5 x 5.5 inch illustrated booklet was printed at the AS220 community print shop by Jacque B...

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Software outreach: Modularity is great for collaboration

by warren 2 days ago | 0 | 83 | 2

Just as Summer of Code deadlines are looming, I wanted to write a bit about modularity...

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An amazing week of software contributing at Public Lab

by warren 7 days ago | 0 | 110 | 2

Hi, everybody - i'm just opening an issue to say THANK YOU to everyone who's been coding here rec...

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Open Institute presentation on facilitating community science

by warren about 1 month ago | 0 | 87 | 1

I gave a talk on Saturday at Open Institute V2 in Madeira, which had the theme of "Open in a Time...

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Introducing a Lego Spectrometer

by warren about 1 month ago | 0 | 570 | 1

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 about 1 month ago | 0 | 984 | 5

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 about 1 month ago | 0 | 101 | 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 about 1 month ago | 0 | 96 | 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 about 1 month ago | 0 | 162 | 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 about 2 months ago | 0 | 6,530 | 3

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 about 2 months ago | 1 | 1,172 | 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 about 2 months ago | 0 | 139 | 1

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 about 2 months ago | 3 | 1,048 | 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 3 months ago | 0 | 105 | 3

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

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Software outreach: a blog series

by warren 3 months ago | 0 | 225 | 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 3 months ago | 0 | 127 | 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 3 months ago | 0 | 462 | 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 3 months ago | 0 | 210 | 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 3 months ago | 0 | 188 | 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 3 months ago | 0 | 271 | 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 3 months ago | 0 | 151 | 1

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

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Setting up the Raspberry Pi Camera for Wireless Streaming

by partsandcrafts about 2 months ago | 8 | 395 | 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 3 months ago | 7 | 323 | 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 3 months ago | 0 | 325 | 2

_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 9 months ago | 5 | 316 | 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 | 763 | 3

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

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Assemble a DIY Papercraft Spectrometer

by abdul over 1 year ago | 2 | 4,679 | 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 over 1 year ago | 5 | 4,488 | 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 over 1 year ago | 2 | 721 | 3

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 over 1 year ago | 2 | 415 | 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 over 1 year ago | 0 | 535 | 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 over 1 year ago | 7 | 668 | 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 | 463 | 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 | 511 | 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 | 1,552 | 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 | 1,058 | 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 | 974 | 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 over 2 years ago | 6 | 2,049 | 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 over 2 years ago | 8 | 1,171 | 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 | 3,763 | 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 | 2,562 | 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 | 2,623 | 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 | 2,230 | 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 over 3 years ago | 22 | 3,727 | 1

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

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

by Shannon over 3 years ago | 0 | 2,520 | 0

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

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What are different methods of measuring water turbidity?

Accepted

warren asked about 10 days ago

Answers by warren

How is water turbidity regulated?

warren asked about 10 days ago

Answers by warren

How to choose the order of pictures when exporting

Accepted

adyr_construction asked about 11 days ago

Answers by warren

Lego Spectrometer suitable for studying sunlight?

Accepted

jsbonillam asked about 14 days ago

Answers by warren

normal or noIR camera?

iamben asked about 16 days ago

Answers by warren

Paper for printing

Accepted

G33K4P00RV4 asked about 23 days ago

Answers by warren

CSV files from spectra

Dr_Z asked about 24 days ago

Answers by warren

What are good ways to capture outputs and notes at events?

stevie asked about about 1 month ago

Answers by warren

How to use the API to export a constant stream of data?

Reallygeek asked about about 1 month ago

Answers by warren

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

Accepted

warren asked about about 1 month ago

Answers by warren

Where can microscope lenses (objectives) be bought?

warren asked about about 1 month ago

Answers by warren

Noise when Trying to Analyze Spectrum

matthart610 asked about about 2 months ago

Answers by warren

What are different commercially available hydrogen sulfide detection methods?

Accepted

warren asked about about 2 months 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 do we confirm the current version of the software?

quencher asked about about 2 months ago

Answers by warren

How to select a site for hydrogen sulfide testing?

warren asked about about 2 months 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 about 2 months 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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Who can I reach out to for community science app UI help?

nshapiro asked about about 2 months ago

Answers by warren

Training in odor identification?

Sara asked about about 2 months ago

Answers by warren

Does anyone know if a sensor lending library exists?

Zengirl2 asked about about 2 months ago

Answers by warren

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

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warren asked about 2 months 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 2 months ago

Answers by warren

Helium alternative

Accepted

mrw0116 asked about 2 months ago

Answers by warren

How do I assemble the mini-balloon kit?

asnow asked about 2 months ago

Answers by warren

What's happening at the 2017 Barnraising?

warren asked about 3 months ago

Answers by warren

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

warren asked about 3 months ago

Answers by warren

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

warren asked about 3 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 3 months ago

Answers by warren

Need your feedback on Tag pages

tommystyles asked about 3 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 3 months ago

Answers by warren

Has anyone used a RasPi camera in a DIY microscope?

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bmela asked about 4 months ago

Answers by warren

What are good sources of cheap bulk giant mylar balloons?

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warren asked about 4 months ago

Answers by warren


Is there an offline version of Mapknitter?

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stevie asked about 4 months ago

Answers by warren

How big are silica particles, in microns?

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warren asked about 4 months ago

Answers by warren

What should we do at LEAFFEST?

cfastie asked about 4 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 4 months ago

Answers by warren

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

Accepted

warren asked about 4 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 4 months ago

Answers by warren

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

bsugar asked about 4 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 4 months ago

Answers by warren

What does oil pollution mean for my health?

Accepted

warren asked about 4 months ago

Answers by warren

What could teenagers do to support Harvey response efforts?

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warren asked about 4 months ago

Answers by warren

How do I collect a sample for laboratory analysis?

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warren asked about 4 months ago

Answers by warren

Water Filter Effectiveness

Mempet asked about 5 months ago

Answers by warren

How big are smoke particles, in microns?

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warren asked about 5 months ago

Answers by warren

Calibaration or switching scale?

jayjay70 asked about 5 months ago

Answers by warren

Starlight Recorder KIC8462852

LightWaveResearch8000 asked about 6 months ago

Answers by warren

How To Make Time Lapse Spectrometer

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LightWaveResearch8000 asked about 6 months ago

Answers by warren

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

Accepted

warren asked about 7 months ago

Answers by warren

Assembly completed but the camera doesn't work.

Accepted

1987123 asked about 7 months ago

Answers by warren

Desktop Spectrometry Kit to arduino?

jjoll asked about 7 months ago

Answers by warren

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

marlokeno asked about 7 months ago

Answers by warren

How do I cheaply do long-term outdoor timelapses?

warren asked about 7 months ago

Answers by warren

Can anyone help with weather station recommendations?

Accepted

stevie asked about 7 months ago

Answers by warren

Cheap, lightweight GoPro alternatives for aerial mapping?

Accepted

warren asked about 8 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 8 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 8 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 9 months ago

Answers by warren

Is this government security warning on NOAA new?

marlokeno asked about 10 months ago

Answers by warren

Good guides on doing a photo survey of a site?

Accepted

warren asked about 10 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 11 months ago

Answers by warren

DIY methods for nitrate detection in food?

fez asked about 12 months ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about 12 months ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about 12 months ago

Answers by warren

How to get spectral data in excel or other formats

Accepted

suha asked about about 1 year ago

Answers by warren

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

Accepted

suman asked about about 1 year ago

Answers by warren

Can you process multiple images at the same time?

JonathanM32 asked about about 1 year ago

Answers by warren

Can we use rPi camera for fluorescence measurement in plants

yusufm asked about about 1 year ago

Answers by warren

How should I choose a secure/private file sharing system?

warren asked about about 1 year ago

Answers by warren

orientation of slit vs that of diffraction grating

wlkwong asked about about 1 year 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?

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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

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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

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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 over 1 year ago

Answers by warren

lightweight air quality sensors for a weather balloon

glenc asked about over 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 over 1 year ago

Answers by warren

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

Accepted

warren asked about over 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 over 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 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

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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?

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AndrewJamesLaplante asked about over 1 year ago

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Question: How do I get the calibration user interface?

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PeterDH asked about over 1 year ago

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View these maps at MapKnitter.org »

Title Creation date Image