| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| donblair | "Hi @gretchengehrke! Sorry for the much-delayed reply :) and thanks for the comment. I, too, liked this approach -- basically, using the differenc..." | Read more » | over 5 years ago | |||
| donblair | "Yay, data!! Neat observation about the battery voltage and the temperature. Makes me want to compare the rate of battery voltage drop to the temp..." | Read more » | almost 7 years ago | |||
| donblair | "Chris, This is such a beautiful project! The lapse rate calculation is so fun to see. Quick reactions: That power switch goof is annoying. I w..." | Read more » | almost 7 years ago | |||
| donblair | "Hi Chris! This is fantastic research. So many interesting questions coming up already via your testing. Thank you. Riffleman! These rechargeabl..." | Read more » | almost 7 years ago | |||
| donblair | "Ben, Fantastic job on this! Excellent descriptions of the entire system -- the electronics, the probe design, and the calibration procedure. Ver..." | Read more » | almost 7 years ago | |||
| donblair | "I need a little help understanding this background. When you modulate the LED at 1 kHz, that means it's flashing on and off 1000 times a second? E..." | Read more » | about 7 years ago | |||
| donblair | "@pdhixenbaugh -- These are great ideas / questions / suggestions! I just posted a quick follow-up here: https://publiclab.org/notes/donblair/03-2..." | Read more » | about 7 years ago | |||
| donblair | "-- a CR1220 coin cell. " | Read more » | about 7 years ago | |||
| donblair | "Oh, exciting ... it'd be fun to demonstrate anything powered by moving water. Maybe this thingy should be ordered immediately. A visit ASAP sound..." | Read more » | about 7 years ago | |||
| donblair | "Exactly. Was confusing for me, too, as I'd been nursing a rather fixed mental picture of a parallel plate capacitor with a dielectric slab sandwic..." | Read more » | about 7 years ago | |||
| donblair | "This sounds like it might prompt a PVOS research trip up to Bernie Country ... I need to write up a research note, but here's the basic idea (cour..." | Read more » | about 7 years ago | |||
| donblair | "Hi @gretchengehrke :) I'd never really testing it very thoroughly, and I haven't done sufficient background research to know if the 555 approach I..." | Read more » | about 7 years ago | |||
| donblair | "Wow, amazing note. Thanks so much for putting all this so nicely together, @mathew!!! Still digging in, but quick thoughts: The 6-32 screws wit..." | Read more » | about 7 years ago | |||
| donblair | "Hey Liz! Wow -- this looks great! Since this research note was originally posted, there are a few insights that have emerged: Silicone doesn't ..." | Read more » | about 7 years ago | |||
| donblair | "@pdhixenbaugh -- the latest version of the Riffle (Beta 0.1.1) will have two battery ports -- one for rechargeable Lipos, and one that can take in ..." | Read more » | about 7 years ago | |||
| donblair | "Oh gosh -- Chris, thanks for tagging me in this thread -- I had no idea that this existed! Wow, Ed -- what amazing work you've been doing!! It's ..." | Read more » | about 7 years ago | |||
| donblair | "Note: fixed the broken link to the riffle datalogger, above. Cheers! " | Read more » | over 7 years ago | |||
| donblair | "@mathew -- great stuff! I really like the stud ring + nut replacement for the alligator clips. More secure, and likely available at a typical hard..." | Read more » | over 7 years ago | |||
| donblair | "Ah, great -- yes, that's what seems most sensible to me, too. TMI: By frequency I meant the "555 timer output frequency" for the conductivity rea..." | Read more » | over 7 years ago | |||
| donblair | "The basic trade-off I see is that: it's actually a pain to reprogram the device with calibration corrections every time you do calibration, even t..." | Read more » | over 7 years ago | |||
| donblair | "Great point! @warren and @gretchengehrke Need to figure out those default units. Was actually just musing about that, and wrote this: https://pub..." | Read more » | over 7 years ago | |||
| donblair | "To be more specific ... The goal is for the microcontroller (uC) brain (Atmel 328p), and the sensor boards it connects to, to be running at 3.3V. ..." | Read more » | over 7 years ago | |||
| donblair | "Thanks @danbeavers! The PDF you just linked to seems empty -- if you get a chance, could you link to a URL with the part? I have share your feeli..." | Read more » | over 7 years ago | |||
| donblair | "Ah, okay, issue: I can drop the charging chip; but currently the charging chip performs a useful additional function: it allows voltage to be com..." | Read more » | over 7 years ago |