| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| 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 » | over 7 years ago | |||
| Sidney_AstroPlant | "Thanks Chris for your response. My assumption was that the blue filter supplied with the RPI Noir camera blocks the red channel fully. So you get a..." | Read more » | over 7 years ago | |||
| cfastie | "I can't help with shift registers, but I have had good luck running a 1602 LCD with just two data pins (and two power) using a serial interface mod..." | Read more » | over 7 years ago | |||
| Sidney_AstroPlant | "Thanks for the positive messages! I see that both of you are active in open source hardware and software initiatives. We are thinking to share our ..." | Read more » | over 7 years ago | |||
| zengirl2 | "Glad you posted here as you know I'm a fan of the project. :) " | Read more » | over 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 » | over 7 years ago | |||
| warren | "Just wanted to say this looks really cool! " | Read more » | over 7 years ago | |||
| xose | "Hi Vman what happened to me was that chrome doesn't even work with the front camera using iphone. Unfortunately It doesn't support WebRTC so it is ..." | Read more » | over 7 years ago | |||
| MadTinker | "Thanks for the info Chris. I also ran across the KnowFlow that has a lot of pretty good info. They also rely heavily on the DFRobot sensors. Until..." | Read more » | over 7 years ago | |||
| cfastie | "That sounds like a wonderful "opportunity." It is also a revealing test case for the suitability of DIY environmental loggers to serve their maste..." | Read more » | over 7 years ago | |||
| stevie | "Responses from the mailing lists: Hi Carol! So excited to work on this at Barnraising! Someone correct me if I'm wrong, but the data loggers will ..." | Read more » | over 7 years ago | |||
| warren | "Carol chipped in on the mailing lists: My first question is, similar to Chris's, what can the data loggers do? Conductivity? Turbidity? pH, dissol..." | Read more » | over 7 years ago | |||
| cfastie | "Okay, now I understand the question. It's really helpful to know what data logger hardware you will have. You will have a Nano Logger Kit. You will..." | Read more » | over 7 years ago | |||
| stevie | "Hi Chris, thanks a bunch! I'm hoping we can work on developing out an activity of two for people to do in first experimenting with data loggers as ..." | Read more » | over 7 years ago | |||
| warren | "These are some really good questions, many of which get at the question of "constraints" -- i.e. what constraints are you designing towards? A spec..." | Read more » | over 7 years ago | |||
| cfastie | "Stevie, it sounds like you are looking for demonstrations of things data loggers can do. That really depends on what logger(s) you have and what se..." | Read more » | over 7 years ago | |||
| warren | "Possibly some of the Coqui activities (which were designed for real-time monitoring, not data logging) could be adapted for a data logger? https:/..." | Read more » | over 7 years ago | |||
| dsvilko | "It's true that in ideal conditions a single line of pixels should be enough but if you want a high quality spectrum you certainly need more. To get..." | Read more » | over 7 years ago | |||
| cfastie | "That's a gorgeous spectrum, maybe the best I've seen from a DVD. Is there more information to be gained from using more of the spectrum? A single l..." | Read more » | over 7 years ago | |||
| cfastie | "I don't recall seeing instructions for making spectra of plant leaves. Such a spectrum could be of the light reflected from the surface of a leaf o..." | Read more » | over 7 years ago | |||
| jjoll | "hello savargaz, thanks for the answer. what are your thoughts on distinguishing classes as large as all plastics. Will there be a unique spectral s..." | Read more » | over 7 years ago | |||
| savargaz | "You can most definitely use spectrometers to detect different types of materials. All materials are composed differently and thus will absorb and r..." | Read more » | over 7 years ago | |||
| cfastie | "Those battery eliminators are legitimate products. Canon makes them for some of its PowerShots. The AC to DC converter takes wall power and deliver..." | Read more » | over 7 years ago | |||
| gretchengehrke | "As Mathew and David pointed out, there aren't readily available low-cost techniques for distinguishing among potential sources of particulate matte..." | Read more » | over 7 years ago |