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October 17, 2012
about 4 days ago
On retrospect, I think you are right that I misread the <4g acceleration limit as the item’s mass. My bad.
I don’t see in the datasheet any mention of PPS (a text search in AdobeReader for “PPS” shows zero hits). You might be confusing PPS with update rate.
Unless one of the test points accessible on the top-side is the PPS signal, I think the only way to get a PPS out of this is to kludge a pseudo PPS by setting a PPS flag at the start of each second’s worth of NMEA sentences and then clearing it 500ms later.
about 6 days ago
This little tiny (and light) GPS module would probably work well for amateur high-altitude ballooning. The stated max altitude is 50km (164kft). When I was working at UDel, one of the projects I worked on was stratospheric balloons (we had 2 payloads, and collaborated on a 3rd). These professionally made zero-pressure balloons typically topped out at between 120kft and 130kft (under 40km). Many amateur launches using rubber weather balloons should expect between 60 and 105kft (18.3 to 32km), well within the max altitude of this module. At a weight (well, actually mass) of less than 4 grams, that leaves more payload capacity for other things, or to allow more altitude.
Don’t forget to emblazon these with “do not swallow” stickers…
I suppose you might be “safe” as long as you don’t market them as toys. (I never did get a couple cubes of the buckyballs or cubes before they were recalled…) :‘(
News - My Magic Lunchbox!
Clever use of a lunch box. I might have set it up with the external connectors going through the lunchbox side below the breadboard mount. That way the wires coming in from the side don’t interfere with the breadboards. Also allows a little easier access to the storage area.
Though, I suspect you’ve already discovered this and filed it away as something to do to the next one that you may or may not build…
about 2 weeks ago
Yes, but nowhere on either Arduino.cc or Arduino.org (that I can find) is there any information on how to actually procure one of those modules.
I’ll repeat my request here from the new-product page. Would SparkFun be able to stock the module that the Arduino ethernet shields and boards are designed to use?
News - New Product Friday: This.…
about 2 weeks ago
Kudos to who ever did the photoshop (or was it gimp?) work. Very cleanly done.
For those keeping score, that Arduino Ethernet Shield 2 is an Arduino.org product, not an Arduino.cc product. That’s all I’m going to say about politics here.
The “new” R3 arduino header arrangement is also there on the regular Arduino Ethernet Shield, so that is not a new feature of this revision of the product. Technically it is the Arduino 1.0 pinout. Commonly, and mistakenly, called the R3 pinout because it was first seen on the R3 Arduino boards.
What is new are the TinkerKit headers, and components shifted around to make room for the headers. One of the major things that moved is the reset button, but that is actually quite minor for most people. More importantly, both the SD card and the optional PoE mounting appear to be in very nearly the same place. (I’d have to compare CAD files to be sure.)
One thing that always bugged me about the PoE module is Arduino never carried it as a stand-alone part in their store. One could get an Ethernet Shield with one installed, but if one wanted to upgrade an existing shield to use PoE one had to try to figure out how to source the module themselves. Do you guys at SparkFun think you could look into stocking them? I don’t expect that it would be a high volume product, so an initial order of 10 might last you a year…
News - Designing a control syste…
about 3 weeks ago
You might want to give Dia a try. It’s freeware (open source I think, but could be wrong) and is for drawing Diagrams. It might have the symbols you need.
One more lesson learned for you:
If you can’t justify an AutoCAD sized purchase (especially for just a handfull of projects), might I suggest Draftsight? It is the best free software for 2D CAD that I’ve found based on my 2D CAD training on AutoCAD. It is developed by Dassault Systemes (the same company that does SolidWorks), and is free as long as you don’t expect official customer support. But, their (public) forums are pretty good for unofficial customer support.
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