warren 771 research notes and 10065 wiki edits | Joined about 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


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"Ok, hacky but cool: Cut open an A23 batter (the same type we're already using for 12v power to the 555 circuit): http://www.instructables.com/id/..." | Read more » about 7 years ago
"OK, awesome - this page lists the voltages needed to trigger the shutter per-camera-model, but does not list the A495: http://chdk.wikia.com/wiki/C..." | Read more » about 7 years ago
"I've been trying to figure out the MaxM here: http://publiclaboratory.org/notes/warren/12-8-2011/rgb-color-knob-small-steps-towards-thermal-flashli..." | Read more » about 7 years ago
"Hi, John - I don't think anyone's tried to rectify vector data using MapKnitter - it's designed for rectifying raster data against other raster dat..." | Read more » about 7 years ago
"Wow, very cool. Any photos of your setup? Shouldn't be hard to connect to SW - but how are you reading the data? is it a serialized set of [pixel,..." | Read more » about 7 years ago
"I've been meaning to make a .csv download available for spectralworkbench spectra. will try next week.. " | Read more » about 7 years ago
"OK, so far both are the "F" model. Taking notes here: I eventually had to run this command on the files in the SD card to make them executable (on..." | Read more » about 7 years ago
"OK, quick link to CHDK versions: 1.00D: http://mighty-hoernsche.de/bins/a495-100d-1.0.0-1704-full_BETA.zip 1.00E: http://mighty-hoernsche.de/bins/..." | Read more » about 7 years ago
"Hey Paul - check out Mathew's post, above -- but do you mean how do we wire it into the camera? I've been having trouble with that and you can read..." | Read more » about 7 years ago
"ug, well these cameras are refurbished, but when we go through them all when modifying them, I'll do my best to mark the firmware version in Sharpi..." | Read more » about 7 years ago
"Hi Chris - I was wondering if you'd mind putting a "main image" on this post (it's in the sidebar when you edit it) so that a nice thumbnail shows ..." | Read more » about 7 years ago
" $25 at Target: http://www.target.com/p/1-15-Radio-Control-Mud-Slinger-Ford-F-150/-/A-13433774#?lnk=sc_qi_detailbutton " | Read more » about 7 years ago
"mistake! I had the two potentiometers backwards. It allows for "trigger down" time of 0.5-5 seconds, and "pause" time of 2.5-60 seconds. Perfect!! " | Read more » about 7 years ago
"Congratulations GLAM!! " | Read more » about 7 years ago
"whoa, so this is only 1 bit of thermal resolution, i.e. it only shows "warm" or "not warm"? Interesting, any links to how they made this map? " | Read more » about 7 years ago
"I found that a 12v "23A" battery (for car remotes) fits perfectly into an "N-type" battery holder, providing the needed 12v to drive this circuit. ..." | Read more » about 7 years ago
"I posted a note on auto-triggering with a circuit Mathew found, will be posting more as well: http://publiclaboratory.org/notes/warren/2-27-2012/5..." | Read more » about 7 years ago
"Yeah i may try both ends of the T -- i was just trying to keep the lenses close together to reduce parallax. Wow! I'd never seen those camera keep..." | Read more » about 7 years ago
"Hey all - I'm working on a dual-camera setup here (i think it may be yours, chris, since you're a backer at that level!): http://publiclaboratory...." | Read more » about 7 years ago
"Wow - do you have any photos of the SLR support system? Did you use a picavet or any kind of enclosure? Great map. " | Read more » about 7 years ago
" " | Read more » over 7 years ago
"For a flashlight with no knob, sure. I was thinking a knob would go in the middle of the color wheel: " | Read more » over 7 years ago
"I just posted a note visualizing this a bit: http://publiclaboratory.org/notes/warren/2-16-2012/thermal-flashlight-temperature-key " | Read more » over 7 years ago
"Yeah, it looks like you're all having some major successes with kites. There's already a page for Lima, actually: http://publiclaboratory.org/pla..." | Read more » over 7 years ago

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