warren 783 research notes and 10141 wiki edits | Joined over 6 years ago | Admin

The creator of GrassrootsMapping.org and co-founder and Research Director for Public Lab, Jeffrey Warren designs mapping and community science tools and professionally flies balloons and kites. He leads the coding community at Public Lab, and has developed the vector-mapping framework Cartagen and grassroots mapping tool MapKnitter, as well as open spectral database and toolkit Spectral Workbench.

He is on the board of of the Open Source Hardware Association and served from 2015-17 as Vice President, is on the board (since 2014) 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.

Photo by ChristopherVillafuerte.com CC BY-NC-SA 4.0

134 questions asked

4156 comments posted

74 activities posted

13 activities attempted

Toy spectrometers arrived

by warren over 8 years ago | 0 | 206 views | 0

View these maps at MapKnitter.org »

Title Creation date Image


Comment Last activity Moderation
"I can try this right now, at the Providence Purple Air sensor: https://www.purpleair.com/map?#12/41.8091/-71.4266 " | Read more » 11 months ago
"OK interesting and now it's green again, and i guess because of averaging, the spike doesn't appear as high anymore? @jeffalk does this seem rig..." | Read more » 11 months ago
"Oh wow, I literally saw the dot change from yellow to orange as I watched the map! You can see the spike too: " | Read more » 11 months ago
"Just a note that at 12:42 today (friday) two people with leaf blowers went by clearing the sidewalk and there was visible dust kicked up. Curious t..." | Read more » 11 months ago
"hello, which spectrometer are you using? Many of ours connect via USB as a webcam. Some use Raspberry Pi cameras. Sounds interesting! On Fri, Aug ..." | Read more » 11 months ago
"@MaggPi, @Gauravano @namangupta @Vidit @tech4GT @mridulnagpal @bansal_sidharth2996 @sagarpreet @Souravirus @ryzokuken @mkashyap354 @icarito @amirbe..." | Read more » 11 months ago
"Hello, did you purchase the camera from us? " | Read more » 11 months ago
"This was fixed by @gauravano and is now live! " | Read more » 11 months ago
"Providence is a port, but @jiteovien said there are a number of PM sources locally apart from the port, i think! On Tue, Aug 28, 2018 at 4:33 PM \..." | Read more » 11 months ago
"@pdhixenbaugh wrote this up for working with a group of teenagers on #coqui kits -- https://publiclab.org/notes/pdhixenbaugh/08-22-2018/diy-science..." | Read more » 11 months ago
"Love this! Super :smiley: Our breadboards didn't have nice Vcc or Ground sections like those pictured in the activity, so we decided to use one ro..." | Read more » 11 months ago
"Hi, can you share an image that you've taken with this camera? Where did you get the camera? Cool! " | Read more » 11 months ago
" " | Read more » 11 months ago
"OK, here! https://github.com/publiclab/Leaflet.DistortableImage/issues/98 " | Read more » 11 months ago
"Hi, Scott - could you try opening it in an incognito window? Are you seeing the blue square handles? We don't have a keyboard command for deletion..." | Read more » 11 months ago
"@bronwen do you have a contact with Franciska from the Barnraising who might be able to chime in on this thread? " | Read more » 11 months ago
"@MaggPi, @Gauravano @namangupta @Vidit @tech4GT @mridulnagpal @bansal_sidharth2996 @sagarpreet @Souravirus @ryzokuken @mkashyap354 @icarito @amirbe..." | Read more » 11 months ago
"Real-time sobel! Cool -- the edge detection on #image-sequencer is pretty slow... i wonder if we could get this running faster (up to video speeds)..." | Read more » 11 months ago
"This is really cool. Just a couple thoughts on presentation -- want to try making a Gif from this video? I think it'd be neat for people to see qui..." | Read more » 11 months ago
"In fact, as you've provided this link for your final work product, I think reformatting your .docx file as README.md (markdown) and including it in..." | Read more » 11 months ago
"Hi, @maggpi - i'm just going through this now, thanks! Perhaps the .docx file could be uploaded as a .txt or .markdown file -- it's displaying oddl..." | Read more » 11 months ago
"Nice! Are you associated with the #AREN project? Just curious! " | Read more » 11 months ago
"oh wow, that'd be 19 grams, vs. ~68 for the #mobius camera! do you know what the video quality is? Great find! On Thu, Aug 9, 2018 at 2:15 PM \&l..." | Read more » 11 months ago
"It shouldn't make a difference -- the base mercury spectrum should be visible in both! Tell us how it goes! On Thu, Aug 9, 2018 at 10:14 AM \<n..." | Read more » 11 months ago


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