| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "I know nothing about this topic, but here is the model I concocted from whole cloth to understand it. Measuring conductivity of water with electro..." | Read more » | over 6 years ago | |||
| cfastie | "A simple option might be to turn on some NIR LEDs when the photography happens. The NIR:VIS ratio might not match sunlight, but if you know what it..." | Read more » | about 7 years ago | |||
| cfastie | "Thanks for adding a photo. NDVI is based on the assumption that the light illuminating the foliage has a certain proportion of NIR and VIS -- the p..." | Read more » | about 7 years ago | |||
| cfastie | "Using two cameras solves one of the two problems I described (mixed NIR and VIS). That problem can also be solved by measuring or making assumption..." | Read more » | about 7 years ago | |||
| cfastie | "I haven't used the Pi NoIR cam and have not seen your photos, so I can only respond from general principles. Camera sensors are not as sensitive ..." | Read more » | about 7 years ago | |||
| cfastie | "The configuration with the stopper held in firmly with the threaded bottle cap looks really good. How hard is it to get that to work, i.e., to get ..." | Read more » | almost 9 years ago | |||
| cfastie | "This looks like a surefire way to waterproof the wires. But now you have to waterproof the seal between the stopper and the bottle. Plastic water b..." | Read more » | almost 9 years ago | |||
| cfastie | "New data: I posted about the SkyShield at the KAP forum and got two orders in 24 hours, both for the solder-yourself kit! So disregard everything I..." | Read more » | almost 9 years ago | |||
| cfastie | "This solder-yourself thing is a tough issue. The Riffle itself is always going to be surface mount, so you are going to have to manufacture them so..." | Read more » | almost 9 years ago | |||
| cfastie | "Neil, Yes, the window slime will probably have to be removed every couple of weeks. Or maybe window transparency could be monitored with a separat..." | Read more » | almost 9 years ago | |||
| cfastie | "Here's another design of an indestructible underwater housing. You should be able to build one with hardware store parts for under $15. No mirrors..." | Read more » | almost 9 years ago | |||
| cfastie | "That's a great idea to use rice to make the bottle non-compressible. It can also keep your payload dry if a little water leaks in. For the testing ..." | Read more » | over 9 years ago | |||
| cfastie | "This is a good definition of the problem: "..sensors be exchanged easily between bottles and; caps seal between sensors and bottles with cheap, of..." | Read more » | over 9 years ago | |||
| cfastie | "The first time i have ever found a tree frog in my house was at the LEAFFEST where the Coqui was built, tested, and designed for PCB. . . Clearly..." | Read more » | almost 10 years ago |