> The alternative is to plug a USB GPS into the mac and do a bit of code to
> compare things. If you want to pass the gizmo around to your friends â¦. that
> can be done. Pretty good ones are âsub $10â delivered.
USB GPS gizmos generally don't have a PPS and the timing on the NMEA
sentences is generally crappy. (I may be biased by a few bad examples.)
Does anybody have a list of ones known to work well?
There is at least one GPS-USB with PPS, the Navisys GR-601W/GR-701W/GR-801W,
They were hard to get retail. Looks like idealez sells them Taiwan for $47
for the 701W (Ublox 7), $50 for the 801W (Ublox 8) (plus shipping). I
haven't tried ordering through them. Gary and/or Mark may have some for sale.
Plan B is a GPS breakout and a USB-serial breakout and a few wires. 4x less
USB jitter if your USB-Serial chip is full-speed.
I got mine from SparkFun:
Venus GPS with SMA Connector
USB to Serial Breakout - FT232RL
Google found this. I don't know anything more:
These are my opinions. I hate spam.
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