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

View these maps at MapKnitter.org »

Title Creation date Image


Comment Last activity Moderation
"I managed to cobble together an Arduino program to try this out: Button turns on one of two fans, randomly. On second press, it reveals which had ..." | Read more » over 2 years ago
"This is great, thanks for posting! This reminds me of the markings by the door of some shops with security cameras. I wonder if you can buy those s..." | Read more » over 2 years ago
"My chia seeds are taking a while; I really like the idea of testing the camera out with sprouts, because a) it's pretty neat to see in timelapse b..." | Read more » over 2 years ago
"Hi, I remember a radiation test of some kind in my basement when I was a kid; I wonder if it was the same type? Do you have to send this into a lab..." | Read more » over 2 years ago
"Ah, so glad it worked. Yes, it's a lot of data for the database to handle per spectrum! " | Read more » over 2 years ago
"Oh, also just for ref, the idea i posted is here: https://publiclab.org/notes/warren/02-09-2017/a-kit-to-design-your-own-formaldehyde-experiment " | Read more » over 2 years ago
"Also talking with a bunch of the folks who've been working on this and wanted to add a link to this customized version focused on Bay Area: http:/..." | Read more » over 2 years ago
"Thank you Pablo for investigating this! Very helpful. " | Read more » over 2 years ago
"OK, so it's not that it's too large a file size, but it's over 4000 pixels wide, so I think it's longer than the available storage per record in th..." | Read more » over 2 years ago
"Although actually now that I look, it's only 500k, so I guess I was wrong about that. Trying to re-upload myself now. " | Read more » over 2 years ago
"Hi, Javi - i think one issue is that your image is really large... i wonder if you uploaded a cropped version of just the spectrum part of the imag..." | Read more » over 2 years ago
"Hi, did you also see "Tag you've applied couldn't be saved"? " | Read more » over 2 years ago
"Hmm, interesting -- but are you sure the one you made wasn't mini as well? The Ponoko one I cut ended up almost exactly 19 cm long when assembled. ..." | Read more » over 2 years ago
"Hi, @pablo - thought you might have thoughts on this, or maybe even design files to share? " | Read more » over 2 years ago
"Hi, can you link us to your spectrum so we can try it out? " | Read more » over 2 years ago
"Also, instead of "Literature review" -- what about "Precedents" or something? " | Read more » over 2 years ago
"Hi, i know it's been a while, but curious how this has gone? I was wondering if it'd be possible to trigger a trail camera by flashing an LED in fr..." | Read more » over 2 years ago
"Hi, Mathew, mind if I retitle this "Use a rubber band and knotted string to trigger a camera"? " | Read more » over 2 years ago
"Also see this one: https://publiclab.org/notes/briandegger/12-11-2015/silhouette-cut-public-lab-mobile-spectrometer-v2 -- though it's not too flesh..." | Read more » over 2 years ago
"Wow, excellent! You can share a design on Shapeways by clicking "Edit product with this model" in the upper right: Then you can check "Offer for..." | Read more » over 2 years ago
"Also glad to hear the trail cam arrived. Please take some good pictures of the setup if possible -- and it's probably a good idea to try an indoor ..." | Read more » over 2 years ago
"I love the idea of a Dylos synced with a timelapse. We've been working on timelapse stuff over at the photo monitoring page and are also talking wi..." | Read more » over 2 years ago
"Hi Liz, do any of the creators have public lab usernames? I'd love to learn more about the uploading process and whether other groups could use thi..." | Read more » over 2 years ago
"Hi, would you mind looking through the FAQ to see if we can get some good documentation together about this additional question? If it doesn't exis..." | Read more » over 2 years ago


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