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December 15, 2009
about 6 years ago
Being that this post was 4 years old and there's talk of new boards, I figured this comment didn't apply any more.
I'm getting 2.5v on the RX0, which is unacceptable for my purposes. This is clearly contradictory to the diagram showing 5v in and 3.3v out, both on Tx and Rx lines, and I'm feeling a bit gypped.
about 6 years ago
This module doesn't have a SIM card slot on it, but if you get the accompanying development board, that has the SIM card slot on it. (https://www.sparkfun.com/commerce/product_info.php?products_id=9427)
Also, it might've been a typo, but please don't confuse GPS with GPRS.
If you want GPS data, you'll need something along these lines: https://www.sparkfun.com/products/10709
And, as far as I know, if you want to actually send the GPS data to a cell phone or laptop, you'll need to use some combination of the two. More than likely, you'll want to either get a GSM shield that mates to a microcontroller board (as opposed to a standalone module) or you can get a shield that's a combination of GSM/GPRS/GPS. I don't believe SparkFun offers this currently, but the cheapest I've found elsewhere is about $90.
Hope this helps!
about 7 years ago
If this is used in an automotive setting where the voltage could potentially reach up to 14.5v, is this too far above tolerance levels? The Duemilanoves could handle up to 20v, but I'm hoping I can get away with the mini version, and I'm not seeing any data sheet for this design other than for the microcontroller itself, which is only tolerant of something like 5v.
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