This is what I was referring to before. I was able to communicate with a few of my 'Serial' now USB devices using the same drivers from Keyspan. I noticed after install from a Kestrel device that the driver that created the Virtual Com Port was the same.

I found them here :  http://www.keyspan.com/downloads/homepage_pn_usa19w.spml

I believe it was the 19W that worked best.

I also use this to communicate to my Meade Telescope, Kestrel 4500, and Garmin GPS.

HTH

Tom McG

On Mar 5, 2008, at 6:17 AM, Ben Rubinstein wrote:

There seemed when I was working in this area to be two main sources of the latter: FTDI and ??Prolific?. Although the devices I was working with were Windows only, I was able to find Mac drivers for both of these things with a bit of googling on the net (because other products are using the same chipsets, and are marketed with Mac software). Once I got these installed I could simply open a "port" called /dev/cu.usbserial, and found that I was talking to the GPS device as if it was a serial device. So in fact Rev was dealing with a serial device; and the actual SiRF chipset was a serial device; there were just a few layers of bridging over USB going on between the two.

So I reckon that there's a fair chance that you could establish communication with the device (though mind you I did this a couple of years ago, on a PowerPC - I've not checked whether Intel versions of these drivers are now available).

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