| 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 » | almost 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 » | almost 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 » | almost 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 » | almost 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 » | almost 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 » | almost 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 » | almost 9 years ago |