Comments

Author Comment Last activity Moderation
donblair "Great question re: whether powering the Feather on the 3V line really does work well ... I don't really know. But: looking at a schematic for one ..." | Read more » almost 3 years ago
donblair "Thanks Chris -- this is incredibly useful. So important for folks to have a sense of the trade-offs and considerations when choosing solutions in ..." | Read more » almost 3 years ago
donblair "Hi @iamchriskelly -- sorry for the delayed reply ... and wow -- this is amazing work you're doing! Would love to know how your PCB version worked ..." | Read more » almost 3 years ago
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 » almost 3 years ago
donblair "Hallo! If the hardware is Riffle version 0.1.8, the relevant schematic is here -- and, so far as I can tell, VBAT should simply be the battery inp..." | Read more » almost 3 years ago
donblair "Hallo! I haven't had great luck with Digikey shopping carts sticking around, so it might be better to put direct links to parts in e.g. a wiki ......" | Read more » almost 4 years ago
donblair "Cool! " | Read more » almost 4 years ago
donblair "Yes, exactly! That's what I finally came around to this morning :) That's the proper level of abstraction here; there are various clever schemes f..." | Read more » almost 4 years ago
donblair "Update: actually, nevermind :) I've read more about error detection codes, and I'm learning that there might be better / easier ways of implement..." | Read more » almost 4 years ago
donblair "This is so fun!. I've been starting to reproduce the Matlab code in a Jupyter notebook, in order to understand the algorithm ... it's still a mess..." | Read more » almost 4 years ago
donblair "This is a fantastic and very clear explanation. Thanks so much for all the work and thought that went into this! In the end, did you decide to mo..." | Read more » almost 4 years ago
donblair "@rmeister -- WebJack is a lovely piece of work! I connected a thermistor to a Pro Mini, used the voltage divider and capacitor setup recommended a..." | Read more » about 4 years ago
donblair "Hi Rebeccah! Fantastic stuff here. Lots to digest, and I have several thoughts -- but first, quickly: the frequency output of the Coqui requires..." | Read more » about 4 years ago
donblair "This is gorgeous! So cool! (Were you able to use the washer without bumping into any components on the board? Been worried bout whether using th..." | Read more » about 4 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 » over 4 years ago
donblair "Bravo!! This is amazing. This makes me wonder what accounts for the rest of that quiescent current draw ... maybe the majority of it is due to th..." | Read more » over 4 years ago
donblair "This is so fantastic. So neat to see the current spikes with the SD card writes! ANd ... oh, my, what a terribly high sleeping current ... I sho..." | Read more » over 4 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 » over 4 years ago
donblair "Wow, great work. Sorry that there's so much trouble dealing with drivers for this USB-Serial chip! Re: the capacitive sensor circuit ... do you s..." | Read more » over 4 years ago
donblair "@ggallant -- Wow, this is fantastic detective work. Does it seem that you were able to resolve the uC resetting issue with the extra cap parallel ..." | Read more » over 4 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 » over 4 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 » over 4 years ago
donblair "@cfastie: Power estimates are next on my list :) Looks like I should be able to switch off power to the camera completely using the microcontrolle..." | Read more » over 4 years ago
donblair "The new firmware has a hibernate function, so you don't need to do this. You just let the mobius turn itself on and off, and let your additional po..." | Read more » over 4 years ago