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January 7, 2009
about 2 months ago
If you “drive” the chips from a PC (I’ve used Windows, for years. Others have done 1-Wire stuff from Linux equally long) all the “messy bits” are taken care of for you between an adapter (about $25) and the routines in the free SDK. I programmed for 1-Wire with Delphi for years, and have just (8/16) figured out the small tweak needed to use the SDK with the “free Delphi”, Lazarus. (Which I have been using happily for several years). http://sheepdogguides.com/lut/dstl2hello_ds18b20.htm
And remember that the 1-Wire family includes many devices. You aren’t limited to temperature sensors. There are digital input and output modules. Analogue input modules, etc.
“Signal degradation”?? No… that’s not going to happen… that’s one of the advantages of using a DIGITAL sensor, like the DS18B20.
If you purchase a USB adapter to connect 1-Wire devices to a PC (about $25), all sorts of interesting possibilities arise. For your immediate wants, there’s “1-Wire Viewer”, a free utility that comes with the SDK. which gives you a quick, easy way to learn the IDs (64 bit ROM) of all of your 1-Wire chips. With the adapter + Lazarus (the “free Delphi”) you can write programs for logging and displaying data from your 1-Wire chips on a PC. (Lazarus use explained at http://sheepdogguides.com/lut/dstl2hello_ds18b20.htm)
Multiple DS18B20s… in combination with other 1-Wire chips, or not…. can all be on one long piece of “bell wire”, under the control of a modest Windows PC, with software written (by you) with Lazarus, “the free Delphi”.
Details (and zip with demo sourcecode) at…
about a year ago
An unofficial (user created) tour of the Qduino’s pins is now available…
… and notes on what is in the library…
News - Introducing the Qduino Mi…
about a year ago
Consider one “vote” for how you have it in V1.0 being just fine cast, please.
Many thanks!!! LOTS of Good Stuff in the above… I will make incorporation of the same into my page a priority… note that the page already says how good the Sparkfun customer support is! (^_^)
Trying to get to grips with this promising board. I don’t have Eagle on my machine. (I use KiCad). A high res .pdf of the schematic would be very, very welcome… and perhaps help all of the Kickstarter supporters make progress. My contact details at the end of the page I’ve started about Qduino…
News - New Product Friday: Photo…
about a year ago
To me the most obvious “must have” shield is the battery shield. I say this because the Wifi capability seems to be a big feature of the Photon… and if your connection to “the rest of the world” is wireless, it seems a bit of a downer to end up tethered, anyway, by the need for power. If I’m not mistaken, the system could then be given a small solar panel to make it indefinitely untethered, depending on where you live. That would make it great for going up on a roof, or in a tree, for weather or security monitoring.
But a close second would have to be the OLED shield. I am a recent “convert”, having just learned how crisp and clear these are. Even at only 0.66" and 64 x 48 pixels, with the powerful processor behind it, I’m sure the display will be more than enough for all sorts of things. Long strings of text could be output by a scrolling algorithm. (Hint, hint… such a generally useful facility would be a great library project for some kind person, wouldn’t it?!!)
This seems a great product… and I put $ where mouth is.
But with units shipping, a little more technical info might not be before time?
For instance… battery? Would a Sparkfun Polymer Lithium Ion Battery - 1000mAh
PRT-00339… be suitable? (I realize that I have to decide if it holds enough charge for my wants. Other than that: suitable?
No public wish lists :(
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