| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Ok, this is getting a little out there, but I'm going to buy and try a few other products; I see $3.84: http://www.ebay.com/itm/201481504603 $3..." | Read more » | almost 9 years ago | |||
| warren | "Mouser has that one! http://www.mouser.com/ProductDetail/Lite-On/LTPL-C034UVH365/?qs=pPiH5vUCJeR2s22VxlBhsw== I think I should order it. I can sol..." | Read more » | almost 9 years ago | |||
| warren | "The 365nm might get us clear data above 410nm -- possibly better than the laser! " | Read more » | almost 9 years ago | |||
| warren | "Hmm, i looked on DigiKey and found some more options, some high brightness, and one listed as 365nm, which'd be great: http://www.digikey.com/shor..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "here is a picture of a 3W LED mounted on a heatsink and an optional focal lens, this LED's wavelength is 410nm-465nm. 11401.Jpg 13779.Jpg " | Read more » | almost 9 years ago | |||
| dhaffnersr | "Hey Jeff, yeah that's an ultra-brite LED (high current/high-flux output.) it's just mounted on a heat sink assmbly. I have a few of those, but the..." | Read more » | almost 9 years ago | |||
| warren | "Ah, excellent, excellent, but it's my understanding that the plastic LEDs like that aren't typically as bright as the surface mounted flat LEDs I'm..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "Here is where you can buy 395nm UV LED's for $1.40 a piece. http://www.allelectronics.com/make-a-store/item/uled-2/ultraviolet-led-395-nm-30-degre..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "Here is the Peak and FWHM data for both the 395nm and 405nm readings: PEAK DATA UV laser 405nm 1) Isopropyl alcohol wavelength [nm] absorbance ..." | Read more » | almost 9 years ago | |||
| dhaffnersr | "Hey Jeff, glad you found this useful, I believe the baseline noise is caused by the extra cell length (the glass test tubes are 2.05cm.) I am waiti..." | Read more » | almost 9 years ago | |||
| warren | "Oh i see here from your post to the list: https://spectralworkbench.org/sets/3176 UV flashlight 395nm baselines feb23 using .09mm slit https://sp..." | Read more » | almost 9 years ago | |||
| warren | "Very consistent results, too, BTW! Although i see there is a change in baseline noise between your two laser tests. " | Read more » | almost 9 years ago | |||
| warren | "Ha, this is great to see! I looked at the graph and my very first thought was "that doesn't look like a 405nm LED, it looks like a 395nm LED". And..." | Read more » | almost 9 years ago | |||
| warren | "Aww, i couldn't wait! Posted: https://publiclab.org/notes/warren/02-19-2016/preliminary-led-and-isopropyl-alcohol-solvent-tests-for-oil-fluorescenc..." | Read more » | almost 9 years ago | |||
| warren | "This was a super great event. I have a draft of a followup post about LED and alcohol tests -- will post on Monday, I believe! " | Read more » | almost 9 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 | |||
| warren | "Oh, reference for the pinouts on the 3.3v Trinket: https://learn.adafruit.com/introducing-trinket/pinouts " | Read more » | almost 9 years ago | |||
| warren | "I figured out the problem with reprogramming -- the pin I'm using for the potentiometer is also used for USB on the Trinket. Oddly, I can get it to..." | Read more » | almost 9 years ago | |||
| Matej | "Great Work! :-) " | Read more » | almost 9 years ago | |||
| liz | "Oh hey Cort! Great to see your work again! " | Read more » | almost 9 years ago | |||
| warren | "OK, I apparently burned out my Trinket somehow, because I can't re-upload; but i have a 2nd one. I uploaded the latest version of the sketch (which..." | Read more » | almost 9 years ago | |||
| warren | "I was able to upload the sketch, but it only changes once per second -- i was hoping for a smoother change, and I'm also not sure it's ever outputt..." | Read more » | almost 9 years ago |