| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| jeremykwan18 | "very nice information and good research. join me at rtppragmaticplay.top " | Read more » | about 1 year ago | |||
| loganw | "@stevie: The sensor is probably too noisy to actually work for methane. There's some further stuff that seems worth trying w/r/t noise reduction th..." | Read more » | about 7 years ago | |||
| stevie | "Hi! was hearing from a number of groups in CO this week about interest in low cost methane sensing. Any updates here? " | Read more » | about 7 years ago | |||
| mathew | "I'm also interested if the same lenses and filters could be applied to a Lepton sensor-- It's primary sensitivity is in the far infrared. It appea..." | Read more » | over 7 years ago | |||
| mathew | "I discovered the OpenMV project has a thermopile board. I can't find a lot of documentation on it, but I found this: https://openmv.io/docs/librar..." | Read more » | over 7 years ago | |||
| loganw | "Here's an update, I've received a sensor (uncalibrated, which turns out to be an issue) and read data off of it: http://exclav.es/2016/10/26/talkin..." | Read more » | over 7 years ago | |||
| mathew | "we don't have to frame the capabilities as a large leaks vs. small leaks question, I think it will be more about lighting conditions. The commerc..." | Read more » | over 7 years ago | |||
| loganw | "Cool! I was thinking about attaching a peltier cooler to it. I can't find much info on what that does to a thermopile sensor though, since they bas..." | Read more » | over 7 years ago | |||
| mathew | "I found this handy thermoelectric cooler module calculator: http://tetech.com/peltier-thermoelectric-cooler-module-calculator/ " | Read more » | over 7 years ago | |||
| mathew | "great to see these initial assumptions! and awesome work on finding both a low-cost sensor and a low-cost filter. The FLIR Lepton thermal images a..." | Read more » | over 7 years ago | |||
| neilhendrick | "The thermister in use has a Thermal time constant <= 15 seconds, which is fine for some applications. However, to get a faster measurement, a di..." | Read more » | almost 9 years ago | |||
| warren | "Another approach could be to increase the transfer of heat by using a high surface area like the heat dissipating fins on a computer's CPU: You ..." | Read more » | almost 9 years ago | |||
| cfastie | "In a sense these sensors all have zero lag. As soon as the the materials that make up the sensor reach ambient temperature, the sensor will tell yo..." | Read more » | almost 9 years ago | |||
| neilhendrick | "Warren, Agreed. The thermister changes temperature when it is in your mouth, or submerged in water, faster than in air, because water is a better t..." | Read more » | almost 9 years ago | |||
| warren | "Hi - I think the sensing speed is affected by both: how well the thermistor is in contace with the water how much thermally conductive material i..." | Read more » | almost 9 years ago | |||
| liz | "new announcement: Landsat 8 data is available for anyone to use via Amazon S3. http://aws.amazon.com/public-data-sets/landsat/ " | Read more » | about 9 years ago | |||
| btbonval | "As an example of something with low specific heat capacity, you could fill your fridge with metal pots. Although the pots won't fall out of the fri..." | Read more » | over 9 years ago | |||
| btbonval | "As a heads up, the contents of the refridgerator can make a huge difference. If you have a fridge with nothing in it at all, the fridge is only co..." | Read more » | over 9 years ago | |||
| sara | "Thanks for sharing your project! Particularly the easily made error of covering up sensor. It's a great reminder to the rest of us! " | Read more » | over 9 years ago | |||
| nicholas | "yahoo!!!!! I'm going to give this a go and will write a research note on the outcomes... " | Read more » | over 9 years ago | |||
| liz | "API for downloading LANDSAT from friends at Development Seed! http://www.developmentseed.org/blog/2014/08/29/landsat-util/ @nicholas @lprashad " | Read more » | over 9 years ago | |||
| karenv | "This letter contains a good overview of what has happened so far with EPA (see the background section). http://www.capecodbaywatch.org/wp-content/u..." | Read more » | over 9 years ago | |||
| liz | "thanks @karenv . Did you make any postings about how the actual meeting with EPA went where you called for more regulation over this thermal plume?..." | Read more » | over 9 years ago | |||
| karenv | "Hi Liz - It's mainly EPA, but we could also reach out to state DEP as well. " | Read more » | over 9 years ago |