| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "It's going to be $16.20, which is expensive for a cut but cheap for a prototype :-) Transparent acrylic (although I could use matte black at 22.70..." | Read more » | over 8 years ago | |||
| warren | "I'm going to try getting it lasercut at http://www.ponoko.com/ -- in part to test if Ponoko is a service others could use for prototyping lasercut ..." | Read more » | over 8 years ago | |||
| warren | "I like the idea of side holes for different types of spectrometry! The flap is to hold something like a leaf against the window so it's flat, and ..." | Read more » | over 8 years ago | |||
| stoft | "I'm not following the flap bit. Why does the spectrometer need to be blocked? Also, from some simple experiements, I found that I needed much much ..." | Read more » | over 8 years ago | |||
| warren | "I'm also interested in how this rigid frame allowed for additional scanning or sampling apparatus, for example for reflectance measurements off of ..." | Read more » | over 8 years ago | |||
| warren | "Good idea -- here's an updated version with small screw or bolt holes: spectrometer-housing-2.svg spectrometer-housing-2.pdf " | Read more » | over 8 years ago | |||
| stoft | "Clever; only 2 part types. Since the internal components are still merely "trapped" by the paper housing, you might consider adding a couple holes ..." | Read more » | over 8 years ago | |||
| stoft | "Interesting thought, but the camera is (ideally) focused on the slit so adding a second one next to the lens would be out of focus; though maybe if..." | Read more » | over 8 years ago | |||
| viechdokter | "Sounds great so far. One question: if you put a second slit right in front of the grating/webcam subset - wouldn't the light be even more parallel? " | Read more » | over 8 years ago | |||
| warren | "More assembly innovations and simplifications; new note and design coming soon: " | Read more » | almost 9 years ago | |||
| warren | "Made the last couple changes -- flipped the tab holes on the bottom flaps, rounded the side bottom flaps: cuvette-frame-9.pdf " | Read more » | almost 9 years ago | |||
| warren | "Another update with the tuck-in flaps, slits, and the USB hole and the indexing hole for the potentiometer (although that may be premature). The de..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "That is just too cool Jeff! " | Read more » | almost 9 years ago | |||
| warren | "Just notes to self; i want to: make the top hole with a swinging flap, for light control redesign the stack to incorporate the LED, Trinket, and ..." | Read more » | almost 9 years ago | |||
| warren | "I tried cutting the new version and it worked pretty well: I worked to insert the LED (which could be a laser diode) dial, and Trinket (arduino ..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "That's ok, I'm going to try it out anyway. I think this will work for what I am thinking, I am going to mount it in a plastic utility enclosure and..." | Read more » | almost 9 years ago | |||
| warren | "I think it will be! But its designed to fit on the 3.0 spectrometry kit, and I think you have the 2.5, no? " | Read more » | almost 9 years ago | |||
| dhaffnersr | "Hey Warren, I downloaded the pdf cuvette frame design and I was wondering if I print it out will it be to scale so I can use it as a template? " | Read more » | almost 9 years ago | |||
| stoft | "Gretchen, thanks for the insight. I'd read that the generally broad fluorescence spectrum is, as would be expected, a combination of many spectral..." | Read more » | almost 9 years ago | |||
| gretchengehrke | "This is a really great post, Dave! As for the concentration effects, in addition to quenching, there is also shielding, and there can be another p..." | Read more » | almost 9 years ago | |||
| stoft | "I just ran some new calculations looking at the curves from my existing data and found a possible correlation between oil density and the centroid ..." | Read more » | almost 9 years ago | |||
| stoft | "Jeff, thanks. 1 - Yes, you are right, there is a "glow" from EVO. However, that peak is small and out at 650nm past where it has little effect. I ..." | Read more » | almost 9 years ago | |||
| warren | " "visually differentiate between the five (5) test samples" - here, you mean based on qualitative visual inspection of the graphs, right? Do you be..." | Read more » | almost 9 years ago | |||
| warren | "This is super, and very impressive, Dave. I have a number of comments/questions, but I'll start with just a few: I'm very surprised to hear that ..." | Read more » | almost 9 years ago |