Comments

Author Comment Last activity Moderation
donblair "Thanks @warren re: Semver -- that looks like just the sort of guidance I was looking for! @tonyc -- I was thinking about this issue ... one of the..." | Read more » almost 5 years ago
donblair "Wow, such a clever demonstration! Makes me wonder, as an aside, if we could simply stick a piece of filter in front of these sensors before puttin..." | Read more » almost 5 years ago
donblair "Yes, nice! In the picture, it looks like one could place a little cuvette right there in the middle and assess the turbidity :) " | Read more » almost 5 years ago
donblair "Update: just figured out that cloud 9 is intended for development-only -- the free service stops running after 2 days :) I'm now experimenting wit..." | Read more » almost 5 years ago
donblair "whaddya think? " | Read more » almost 5 years ago
donblair "Yes -- at this point it might very well be possible to do temp, conductivity, and turbidity while only needing to put screws through the cap, and t..." | Read more » almost 5 years ago
donblair "yes! the one on the left is perhaps problematic because of a battery cable entering the JST connector .. though maybe flat screw will be okay ... ..." | Read more » almost 5 years ago
donblair "Totally agreed @tonyc -- it'd be much nicer to simply use a hole / holes on the main board. .. Lemme see what I can do " | Read more » almost 5 years ago
donblair "ah no sorry! it's actually: https://github.com/OpenWaterProject/riffle/blob/master/hardware/riffle-0.96-oneSideHole.brd https://github.com/OpenWa..." | Read more » almost 5 years ago
donblair "Ah, might be fun to look into adjustable ones too, yeah ... these seem to be so cheap because they're appropriate for charging cell phones ... som..." | Read more » almost 5 years ago
donblair "Seems like the cheapest boost option might be to find a pre-built boost circuit on ebay? http://www.ebay.com/itm/DC-Boost-Converter-3V-3-7V-4-2V-T..." | Read more » almost 5 years ago
donblair "Thanks for all the good thoughts, wow! Chris -- I think you're right -- your experience and our friend Rui's experience is that most folks don't w..." | Read more » about 5 years ago
donblair "OH. MY. GOSH. Amazing design (and video!!!). Can't wait to chat with you about this. Relevant electronics parts are being ordered presently. " | Read more » about 5 years ago
donblair "Ooh, love these ideas! Also found this: http://openqcm.com/ " | Read more » over 5 years ago
donblair "Whee!! I understand the confusion re: K20! It's funny though, I figured most people would've confused it with: Antifungal amphiphilic aminoglyc..." | Read more » over 5 years ago
donblair "I myself am really curious about this issue in general, especially as I dive more into developing open environmental monitoring hardware :) Maybe ..." | Read more » over 5 years ago
donblair "And a great study of capacitive depth measurements is here: http://www.umbc.edu/cuere/BaltimoreWTB/pdf/TM_2009_003.pdf " | Read more » almost 6 years ago
donblair "Oh, my gosh. Sharing widely. So neat! " | Read more » almost 6 years ago
donblair "WAIT -- WE CAN DO THAT? That's fantastic!! Thank you! " | Read more » almost 6 years ago
donblair "Seth, Fantastic!! Thanks so much for this -- super exciting! Maybe you and Bryan and Jeff Walker and I can schedule a Hangout or something someti..." | Read more » about 6 years ago
donblair "Oh, toilet tank analogy is great! @cversek was talking at LEAFFEST about how, in the water electricity analogy, the only sticking point is capaci..." | Read more » about 6 years ago
donblair "Aw, shucks :) But yes, it's so cool that we might find some part of design solution space that satisfies all of these! Before Ben pointing me to t..." | Read more » about 6 years ago
donblair "Here's an example of a cheap, through-hole 'trimmer capacitor': http://www.amazon.com/Through-Trimmer-Variable-Capacitors-Brown/dp/B00G9BJTJW/ref=..." | Read more » about 6 years ago
donblair "Ah darnit, I deleted my comment above by accident, instead of editing it ... Okay, the punchline is: The only ways to compensate for the effect t..." | Read more » about 6 years ago