Comments

Author Comment Last activity Moderation
warren "Thank you for the links and the explanations!!! " | Read more » 4 months ago
warren "Hmm... I guess it seems like a tough setup for my skill set. What does the microwave version look like? " | Read more » 4 months ago
warren "https://www.sciencedirect.com/science/article/abs/pii/0039914070800819 " | Read more » 4 months ago
warren "Interesting. It's like a high power version of this? https://www.ebay.com/itm/324819370181 Does this take high voltage to run? " | Read more » 4 months ago
warren "Hi! I think most webcams can't see much lower than 400nm, but if your sample flouresces in the visible range, you can read that... There's been so..." | Read more » over 3 years ago
warren "Hi, Dave - what is the tell-tale hump? Do you mean from the LED input light? If so, it's at 398nm, not 385nm. What processing did you do? " | Read more » over 6 years ago
warren "@dhaffnersr and @stoft, if you'd like I could send you the lower-wavelength LEDs as well for comparison testing? " | Read more » over 6 years ago
warren "@briandegger @jeffh - thanks for the tips on LED sourcing! Thought you'd enjoy seeing this. " | Read more » over 6 years ago
warren "These look good too, and come with a spectrum datasheet: http://www.ledgroupbuy.com/solderless-true-violet-led-405nm/ " | Read more » over 6 years ago
warren "Powered on one of these, with a dial: http://www.watterott.com/de/Wattuino-Nanite85?x56e76=f63b1cee028854c06b93338f2945a806 " | Read more » over 6 years ago
warren "Here's the big list of UV LEDs below 405 nm " | Read more » over 6 years ago
warren "Crap, those are only in quantities of 400+ or 1000+. I'll keep looking. " | Read more » over 6 years ago
warren "@tonyc @ygstcu - looking at higher powered LEDs, I've found: ~$4.40: http://www.digikey.com/product-detail/en/VLMU3500-385-060/VLMU3500-385-060TR-..." | Read more » over 6 years ago
warren "Yes! " | Read more » over 6 years ago
warren "https://github.com/publiclab/plots2/issues/203 " | Read more » over 6 years ago
warren "Thanks, Chris - we were testing a different bugfix -- there were two. This latest change fixed an issue with @callouts not triggering email sends a..." | Read more » over 6 years ago
warren "Testing @icarito and @cfastie - pls confirm? Thanks. " | Read more » over 6 years ago
warren "@icarito - confirm? " | Read more » over 6 years ago
warren "@ygzstc - pointing you at this note since you've ordered some very bright UV LEDs. Oops, missed your comment mathew - we'll have to try that, thou..." | Read more » almost 7 years ago
warren "Hi, check this out -- @hynae ! " | Read more » over 7 years ago
warren "Hi, Livio - I was so fascinated with your post -- where exactly did you collect a sample from, and was it soil? Water? " | Read more » almost 8 years ago
warren "UV laser through a fish oil pill tested here: http://publiclab.org/notes/warren/08-14-2014/sample-container-search#c10038 " | Read more » almost 8 years ago
warren "One thing I didn't understand was that they are listing the input light at longer wavelengths than the fluorescence peaks they're looking for. I wa..." | Read more » almost 8 years ago
warren "Hmm, do you have enough UV light? No, the sample container shouldn't matter, as long as you are seeing a glow coming from the sample. Can you post ..." | Read more » over 8 years ago