question:general
question:general


Author Comment Last activity Moderation
yamanoorsai "I once created a fidget spinner that measured air-quality. The design worked but the wheel bearing for the spinner had some problems. " | Read more » almost 6 years ago
stevie "Mike shared this question on Facebook, and received the following answers: Stefania Thomas: https://www.epa.gov/benmap Reply by Matt Krogh: T..." | Read more » almost 6 years ago
MaggPi "One option may be to use a computer vision system. Believe it or not its a fairly simple code. Not sure it would work at night but it could proba..." | Read more » almost 6 years ago
liz "There was this thread where people were discussing traffic counting: https://groups.google.com/forum/#!msg/publiclaboratory/cw_i-JIH2kA/vn9GW1lzBAA..." | Read more » almost 6 years ago
liz "I've been wondering about making a "Portrait Book" of various particles, such as dust, combusted fuel, silica, metal shards, micrometeorites, etc. ..." | Read more » almost 6 years ago
cfastie "sylvan, That sounds good. It's definitely easier to help someone articulate a question than to defend the results of a scientific study. Designing..." | Read more » almost 6 years ago
sylvan "Thanks, Chris. I agree with what you've said. I can't imagine a tool that supports valid scientific arguments without the support of experts either..." | Read more » almost 6 years ago
cfastie ""People who use these tools do not need to understand research protocols or statistics in order to create scientifically-valid arguments." I am co..." | Read more » almost 6 years ago
warren "Here are some other possibilities: Thermal imaging - potentially of thermal pollution or related water issues - https://publiclab.org/notes/nichol..." | Read more » almost 6 years ago
stevie "Some people shared some other resources on a thread on the main list from earlier this year. From @mkirk : "I wanted to build a traffic counter ..." | Read more » almost 6 years ago
Ag8n "Go to: https://github.com/jboone/tpms It gives a working system with links to a hak5 video etc. It doesn't count cars, but... " | Read more » almost 6 years ago
Ag8n "Ok. Let's go through it step by step. First, after a little digging, it looks like there are two frequencies used 315 mh z and 433 mhz. So it woul..." | Read more » almost 6 years ago
JohanoSugarro "@Ag8n That's good idea and clever way to do the job. The problem is that, this will be very complicated to set up everything. " | Read more » almost 6 years ago
stevie " @stevie has marked ramseysprague as a co-author. " | Read more » almost 6 years ago
Ag8n "You might look into TPMS ( short for tire pressue monitoring system) by j. Boone. Its freeware that runs on linux. The hardware is a rtlsdr ( it ..." | Read more » almost 6 years ago
stoft "The spectrum of most common halogen lamps is neither smooth nor flat and generally do not have published spectral data. You might consider the Solu..." | Read more » almost 6 years ago
Ag8n "If you are trying a direct comparison ( apples to apples), see how the analytical lab is testing your samples. Probably, they will be using an adv..." | Read more » almost 6 years ago
nshapiro "cool! you can check out EDGI data and join our slack to ask people more in the know than Liz or I here https://envirodatagov.org/archiving/ " | Read more » almost 6 years ago
warren "And i also saw https://toxmap.nlm.nih.gov/toxmap/ from this post: https://publiclab.org/questions/warren/02-01-2018/is-there-a-way-to-view-epa-s-to..." | Read more » almost 6 years ago
warren "@nshapiro or @liz - Sagarpreet had wanted to include some EPA datasets on this combined map (see a bit more here: https://publiclab.org/notes/sagar..." | Read more » almost 6 years ago
warren "@souravirus is just testing a bug here! Sorry @tuomas_j_mattila !! " | Read more » almost 6 years ago
warren "Ah, ok. Thanks for such a careful look at this. So we no longer get separate modified lenses -- we just get whole modified and unmodified cameras f..." | Read more » almost 6 years ago
Ag8n "A couple of gottchas here. I think you want to use the lego spectrometer with a light source. The light source would be fed through a cuvette fil..." | Read more » almost 6 years ago
joyofsoy "Looks like Mobile County Engineering & Public Works. Contact info is available here: https://www.mobilecountypublicworks.net/departments/road-b..." | Read more » almost 6 years ago