| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "I think it is par for the course that a random proprietary sensor will not work gracefully with an Arduino. In this case, it might be that a standa..." | Read more » | about 6 years ago | |||
| warren | "Thanks, Nick - yeah, i think the ADC stuff is more complex than it should be! Maybe we can recruit some help to get a basic Arduino sketch for thi..." | Read more » | about 6 years ago | |||
| nshapiro | "Ah okie thanks! this is all waaaaay over my head. thanks for the clarification re:professional sensor outputs. I think the precision is higher than..." | Read more » | about 6 years ago | |||
| warren | "As to your other question about professional sensors -- I think there's nothing super special about the sensor you have, and almost any system (ard..." | Read more » | about 6 years ago | |||
| warren | "Sorry, Nick I think it may still be an open question whether the manufacturer provides greater precision than this. Do you know? And I think the p..." | Read more » | about 6 years ago | |||
| nshapiro | "Thank you, Chris! This is extremely helpful, although a bit disappointing that none of the DIY data loggers would work without serious fiddling or ..." | Read more » | about 6 years ago | |||
| warren | "@nshapiro - I think this is a provisional "yes" -- thanks @cfastie! Which is to say, a good follow-up question for the company is "how much resolut..." | Read more » | about 6 years ago | |||
| cfastie | "Any Arduino-based data logger should be able to read the signal from that sensor and save the reading at regular intervals. The main obstacle is th..." | Read more » | about 6 years ago | |||
| stoft | "Nice graphics. Yes, white LEDs are not broad spectrum. If it's of any help, I set (Matlab code) the ELP camera to: Manual Exposure, Exposure=-3 (-1..." | Read more » | over 6 years ago | |||
| Tehnicni | "I tried this camera https://www.aliexpress.com/item/HD-Surveillance-camera-1080p-Full-Hd-MJPEG-30fps-High-Speed-CMOS-OV2710-Mini-CCTV-Android/32811..." | Read more » | over 6 years ago | |||
| stoft | "@stef, thanks for the curve data. While the data is useful for comparison with relative sensitivity curves of other cameras, the data, unfortunatel..." | Read more » | over 7 years ago | |||
| stef | " khufkens-pi-camera-response-curves-3342e29_-3-.zip @warren,@stoft This may provide additional info. Stef " | Read more » | over 7 years ago | |||
| stoft | "What I've read is that the RPi camera used to use the OV5647 camera chip but has "upgraded" (changed chips) to a Sony IMX 219 PQ CMOS image sensor ..." | Read more » | over 7 years ago | |||
| warren | "Great, thanks -- and just to link to the question I'd asked about this earlier: https://publiclab.org/questions/warren/09-28-2016/upgrade-a-diy-spe..." | Read more » | over 7 years ago | |||
| stoft | "Jeff, I inserted the component details in the note above, just before the plots. As to the RPi camera, it seems to have two "difficulties" which n..." | Read more » | over 7 years ago | |||
| warren | "Great to see this comparison. Do you have a link to where these webcams might be purchased, and prices? Also - I think you had some thoughts on th..." | Read more » | over 7 years ago | |||
| warren | "If you're at all interested in reflectance measurements, I posted a sketch for a reflectance setup here that might interest you: https://publiclab...." | Read more » | about 8 years ago | |||
| FortunaWolf | "Forager bees work only 1 species of flower on any single flight, so when you collect individual pollen packets from returning forages they are mono..." | Read more » | about 8 years ago | |||
| viechdokter | "Two thoughts: first, the bees sometimes bring in different sorts of pollen, its not 100% sorted although the bees "try to" sort. second, I'd gues..." | Read more » | about 8 years ago | |||
| FortunaWolf | "I wonder if you could do raw data capture off of the webcam (that would also help with your autogain issues too). By removing the bayer filter you ..." | Read more » | about 8 years ago | |||
| warren | "The camera is listed here: https://publiclab.org/wiki/desktop-spectrometry-kit-3-0#Parts+List I think a B&W one would be great, but I really d..." | Read more » | about 8 years ago | |||
| FortunaWolf | "Hi Warren, I don't know what resolution I need yet, TBH. Initial data from the RGB data from cell phone cameras shows that knowing the geographic l..." | Read more » | about 8 years ago | |||
| warren | "Hi, FortunaWolf - what resolution do you need, is probably the first question. I think the DVD will probably not be the limiting factor but if the ..." | Read more » | about 8 years ago |