| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Some serious progress has been made on this, for running SpectralWorkbench on the Raspberry Pi and connecting to it's camera: https://github.com/pu..." | Read more » | over 5 years ago | |||
| raj | "raspberry pi camera: spectral response curves for more details go through my website you can get all details http://zipansion.com/1TSg4 " | Read more » | almost 6 years ago | |||
| warren | "Just wanted also to link to @stoft's input on this question in this comment: As to the RPi camera, it seems to have two "difficulties" which need ..." | Read more » | over 7 years ago | |||
| warren | "Oh great; @khufkens also shared that on this site! https://publiclab.org/notes/khufkens/11-02-2015/ov5647-raspberry-pi-camera-spectral-response-qua..." | Read more » | over 7 years ago | |||
| warren | "I found that V4L2 driver apparently makes it possible to use the raspberry pi camera in Firefox with webrtc, the API Spectral Workbench uses: https..." | Read more » | over 7 years ago | |||
| Siphirobe | "I was wondering the same thing, just with the PiNoIR camera since I am more interested in remote sensing of vegetation. " | Read more » | over 7 years ago | |||
| stef | "@warren After sleeping it over, realized that due to the no IR filter of the raspberry the bandwidth response will be different from the published..." | Read more » | over 7 years ago | |||
| stef | "@warren Here is a link http://www.khufkens.com/projects/ov5647-spectral-response/ and here is a zip file khufkens-pi-camera-response-curves-3342e..." | Read more » | over 7 years ago | |||
| warren | "That's a great thing to point out -- do you per chance have a link to the spectral bandwidth of the sensors? Thanks! " | Read more » | over 7 years ago | |||
| stef | "The BIG advantage of the Raspberry Pi is the use of the Sony IMX298 sensor whose spectral bandwidth is known and is 16 megapixel sensor. Much like ..." | Read more » | over 7 years ago | |||
| tonyc | "Have you all seen the PhotosynQ project? It is an LED based device using reflectance to measure leaf chlorophyl. it started as an incubated kit on ..." | Read more » | almost 8 years ago | |||
| cristoforetti | "@tonyc the project is really under development in these days. Here at webvalley 2016 we are concentrating on measuring grapes and raspberries. Hope..." | Read more » | almost 8 years ago | |||
| tonyc | "That's a really cool use case I hadn't heard of before! Is it something you've had luck with using the PL spectrometer, reading fruit? I imagine e..." | Read more » | almost 8 years ago | |||
| cristoforetti | "@tonyc, the idea is having a portable spectrometer to evaluate fruit maturity in the field to decide about harvesting. In this sense design is cert..." | Read more » | almost 8 years ago | |||
| tonyc | "Is the form factor your main concern in these designs? I'm curious what is the test you are trying to run in the field with the spectrometer? " | Read more » | almost 8 years ago | |||
| dhaffnersr | "I have a similar camera in my spectrometer and was having the same light spot interfering and showing up in the spectral data, I had to bring mine ..." | Read more » | almost 8 years ago | |||
| warren | "This is especially cool as it uses a Raspberry Pi camera, which it seems can be set for fixed exposure and uncompressed image capture. I'm going to..." | Read more » | almost 8 years ago | |||
| dhaffnersr | " stoft, see, that's what I'm talking about, finding the work-around, that's actually a great idea and very cost effective. " | Read more » | about 8 years ago | |||
| stoft | "Yes, both aluminum and silver oxidize very rapidly which is why all mirrors with those surfaces are coated -- the type of coating affects the mirro..." | Read more » | about 8 years ago | |||
| dhaffnersr | " cristoforetti, oh yeah, that's perfectly fine I do the same thing when I build a prototype. I use some pretty unconventional material sometimes! " | Read more » | about 8 years ago | |||
| cristoforetti | "@dhaffnersr thank you for the reference. You are certainly right, my only point is that it will take some time to have an aluminum coated mirror, i..." | Read more » | about 8 years ago | |||
| dhaffnersr | "hey cristoforetti , I just wanted to give you some info on why you should be using the aluminum coated mirrors: Aluminum is also common used in m..." | Read more » | about 8 years ago | |||
| cristoforetti | "@stoft thank you very much for the clarification and suggestions. About 1) I am looking to use cars mirror, that should be front-surface mirrors. ..." | Read more » | about 8 years ago | |||
| stoft | "@cristoforetti, the camera focal distance is based on using a slit to simulate collimated light -- non-collimated light gives multiple diffraction ..." | Read more » | about 8 years ago |