| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| straylight | "Thanks for the question. My apologies that all of the graphs appear to have vanished (they have for me). Not sure why, maybe a hosting issue. Anyw..." | Read more » | over 8 years ago | |||
| anjohn12 | "Quick question, I'm trying to do something similar for a school project. Shouldn't the absorbance of the sample be the negative log of the percent ..." | Read more » | over 8 years ago | |||
| kkoerner | "LukeS good to know, thanks for testing out those pumps and posting your results! " | Read more » | over 8 years ago | |||
| mathew | "Great writeup, Luke! cool work. " | Read more » | over 8 years ago | |||
| LukeS | "@kkoerner, I tried a similar pump when I was researching this and it created too much turbulent/pulsed of the air stream to get a good measurement ..." | 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 | |||
| shanlter | "Thanks @Liz, last year, there's a big scandal on gutter oil in Taiwan. https://en.wikipedia.org/wiki/2014_Taiwan_food_scandal " | Read more » | almost 9 years ago | |||
| liz | "Hi @ygzstc, i heard from Li Zhou and He Shan in Guangzhou who asked me to pass along a question about detecting "recycled" food oil, AKA used resta..." | Read more » | almost 9 years ago | |||
| kevinvivergy | "Yeah I was thinking the same with the paint, introduces another source for pollutants. When I called the Dylos folks, they said that the device wi..." | Read more » | almost 9 years ago | |||
| DavidMack | "I was thinking you could expose the intake to ambient temperature in winter and by heating the enclosure you'd be warming the instrument and air in..." | Read more » | almost 9 years ago | |||
| kevinvivergy | "@Davidmack all good thoughts, thanks for the detailed response. -The big challenge with intake thing is that, if I understand your approach correc..." | Read more » | almost 9 years ago | |||
| DavidMack | "@kevinvivergy great detailed post. I'm not that familiar with the Dylos--haven't handled one--but looking at some photos maybe just cut out holes ..." | Read more » | almost 9 years ago | |||
| kevinvivergy | "Thanks @mathew! Yeah @jeff showed those to me, the AQICN one was pretty straight up too and I just went with theirs because I read their tutorial f..." | Read more » | almost 9 years ago | |||
| mathew | "awesome resources and case! hadn't seen this summary of low cost PM sensors: http://www.aqmd.gov/aq-spec/evaluations#&MainContent_C001_Col00=2 " | Read more » | almost 9 years ago | |||
| mathew | "if you're interested, we made Dylos drivers for Open Pipe Kit for the Pi-- its a flexible platform for pushing data to Phant and any other database..." | Read more » | almost 9 years ago | |||
| msysinfo | "I need to measure oil concentration in a water mixture. Can a SPECTROMETER be used to measure the oil concentration? If it a solute that dissolves ..." | Read more » | about 9 years ago |