| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| fuura | "It will work with UNO? Also your GPS module is so expensive, I try similar project with Beitian BN-280 and NeoGPS library. " | Read more » | almost 6 years ago | |||
| lizimu | "hello.Your tutorial on spectrum analysis has expired. Would you like to send it again? " | Read more » | about 6 years ago | |||
| lizimu | "nice " | Read more » | about 6 years ago | |||
| stevie | "For the infrared cameras, it looks like some of the cameras detects some of the chemicals listed below with this note: "Gases Detected and Minimum..." | Read more » | about 7 years ago | |||
| gastonsolaun755 | "good information " | Read more » | over 7 years ago | |||
| gretchengehrke | "Hi @stevie, I'm not sure if this is on the market yet, but it looks like IBM is developing a chip that they're aiming to price at $200: https://www..." | Read more » | over 7 years ago | |||
| Bronwen | "This article is behind a paywall, but some of the tools/methods listed might be worth doing some digging on: http://pubs.acs.org/doi/abs/10.1021/ac..." | Read more » | over 7 years 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 » | almost 8 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 » | almost 8 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 » | about 8 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 » | about 8 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 » | about 8 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 » | about 8 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 » | about 8 years ago | |||
| mathew | "I found this handy thermoelectric cooler module calculator: http://tetech.com/peltier-thermoelectric-cooler-module-calculator/ " | Read more » | about 8 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 » | about 8 years ago | |||
| eustatic | "I support the use of the term Sniffle! Lauren Sullivan would probably agree! the battery clip will also be tres useful " | Read more » | over 8 years ago | |||
| Bob | "After 3D printing the battery clip, you may need to press the battery arms together while snapping it onto the Riffle board. I uploaded the battery..." | Read more » | over 8 years ago | |||
| cfastie | "Nice battery clip. I covered the back of my Riffle with adhesive Velcro hooks and wrapped some adhesive Velcro loops around the battery. But I migh..." | Read more » | over 8 years ago | |||
| nshapiro | "Here is some alternative tech to the FLIR-- hyperspectral camera for methane visualization (which is one of the most expensive gases to monitor). M..." | Read more » | almost 10 years ago | |||
| amysoyka | "Here is the link to the full talk: https://www.youtube.com/watch?v=z7dfK5RfMTs " | Read more » | about 10 years ago | |||
| amysoyka | "You might appreciate what these guys did. http://youtu.be/yqB8w0WXhnc 1:45 - they built a portable lab to monitor gasses around fracking sites. " | Read more » | about 10 years ago | |||
| mathew | "Those lower wavelength bands may be cheaper or possibly not require as much cooling to get a fast sensor response. Good thinking. We need a ~100k..." | Read more » | about 10 years ago | |||
| geraldmc | "While methane has a main absorption band between 3200-3400nm, it also has weaker bands around 2300nm and 1650nm. For the 3200-3400nm band EOC sell..." | Read more » | about 10 years ago |