datalogger
datalogger


Author Comment Last activity Moderation
cfastie "I am really impressed with the new tutorial. Thanks for that great effort. This definitely lowers the barrier for me to try this. I just dove into ..." | Read more » almost 9 years ago
EdMallon "One of my high school teacher friends mentioned that he wanted add Arduino based projects to his science classroom, but after I posted those DIY gu..." | Read more » almost 9 years ago
pdhixenbaugh "Would it be possible to have a variant using standard batteries? It's not too big of a deal to order a special battery, but in some places and situ..." | Read more » almost 9 years ago
donblair "Note: fixed the broken link to the riffle datalogger, above. Cheers! " | Read more » almost 9 years ago
mathew "re: do we need to pop the thermistor outside the cap? the smallest , most easily filled hole would be a 'vented' screw. You'd probably want a 6-..." | Read more » almost 9 years ago
mathew "files above didn't prep for print right. Updated: riffle-blank2.zip " | Read more » almost 9 years ago
mathew "here are some blanks for the riffle+CT board housing-- just a rectangle that is 134mm with screw holes centered in the 106mm riffle section at 65mm..." | Read more » almost 9 years ago
warren "No, sorry - it just came on another product. " | Read more » almost 9 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 » almost 9 years ago
warren "Just a quick note - found these sorta interesting "solderless" connectors - you just shove a wire in -- and they're surface-mount, too. I tried the..." | Read more » almost 9 years ago
mathew "+1 to not putting units on the CSV file. The 'signal' that this data needs further work/calibration is important and I think well articulated her..." | Read more » almost 9 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 » almost 9 years ago
gretchengehrke "Hi Don, I was assuming the output would be in frequency for both, but there would be an algorithm before the graphing step to do a unit conversion,..." | Read more » almost 9 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 » almost 9 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 » almost 9 years ago
gretchengehrke "Looks great! Two thoughts: (1) definitely important comment by Jeff about units and potentially a post-data-retrieval function for units conversio..." | Read more » almost 9 years ago
warren "What are the default units? I'm thinking about how the CSV will be uploaded and graphed. Looks great! " | Read more » almost 9 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 » about 9 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 » about 9 years ago
danbeavers "The surface mount connector has plastic pins protruding on the bottom to help with mechanical rigidity. SMconnectorF.pdf Click on the box in the..." | Read more » about 9 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 » about 9 years ago
tonyc "I support the idea of giving up recharging in order to handle more types of batteries. That seems a higher likelihood use case. We could offer the ..." | Read more » about 9 years ago
donblair "Oh, and @warren & @tonyc -- so some notches on the edges of the board, yeah? Will play with the idea ... " | Read more » about 9 years ago
donblair "connector Aj, cool ideas @warren and @tonyc! Also: I just heard back from MacroFab -- they can do through-hole soldering for a little more (per ..." | Read more » about 9 years ago