I was trying to work out what the different version were. Is there an advantage in certain frequencies?

On Thu, Aug 18, 2011 at 10:07 AM, Nigel Worsley niglew@googlemail.com wrote:

Just ordered mine.

Not only is it half price, they have the 868 MHz version in stock at last :-)

Nigle

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On 18 August 2011 10:30, Martin Ellis ellism88@gmail.com wrote:

I was trying to work out what the different version were. Is there an advantage in certain frequencies?

there are 3 variants, one for the US, one for europe & one global, based on permitted frequency range use, the global one cant do certain things if I remember right (its covered on the Ti wiki)

Sevan

On 18 August 2011 10:41, Sevan / Venture37 venture37@gmail.com wrote:

On 18 August 2011 10:37, Sevan / Venture37 venture37@gmail.com wrote:

...

On 18 August 2011 10:30, Martin Ellis ellism88@gmail.com wrote:

...

I was trying to work out what the different version were. Is there an advantage in certain frequencies?

there are 3 variants, one for the US, one for europe & one global, based on permitted frequency range use, the global one cant do certain things if I remember right (its covered on the Ti wiki)

http://processors.wiki.ti.com/index.php/EZ430-Chronos?DCMP=Chronos&HQS=O...

Seems to just suggest that you might not get as good range with 433MHz due to it requiring a larger antenna. Also appears that you can software configure the 868 watch for 915 and vice-versa.

I ordered the 868MHz variant as this is the frequency used by the RFM12B modules that come with JeeNodes. I have one of these waiting to be assembled, and also a spare module to use with a Nanode, which is also waiting to be assembled... Hoping that they can be made to play if only via on-off keying and at low bitrates.

Cheers,

Andrew

PS. Amusing that someone commented on the wiki that it'd be nice it if had GPS. At under $50 be nice if it had an OMAP processor and booted Linux too!

the watch comes with 2 USB dongles, 1 which is a wireless card & 1 which is used for attaching the circuit board directly to a host, if I remember right the both present themselves as serial ports to the host host. For building your code for the watch there is gcc available http://mspgcc.sourceforge.net/

Sevan

But you have to open the watch to program it if I understand correctly !

Only once unless you brick it. There is a wireless update utility, but you have to open up the watch to upgrade the firmware to support it according to the wiki.

Nigle