[Nottingham] Cheapie GPS

[Dave]

Wow, that's cheap!

What timing do you need for an ntp time source?  Whenever I've used GPS 
to time external events, I've used a GPS module that has a pulse per 
second output, which is precisely aligned with GPS time.  Then the 
timing accuracy is dependent on the interupt latency and the oscillator 
stability of the hardware you are interfacing it with.  I doubt very 
much whether you get a PPS output from a very low cost module like that, 
and certainly not over bluetooth.  But you might not need that accuracy?

For location mapping, I'll stick my neck out and hazard a guess that 
with a good clear view of the sky you'd get horizontal accuracy within 
10m - 15m most of the time.  Probably better than that.

Have fun!

Cheers - Dave

Martin wrote:
> Folks,
>
> Anyone know about these:
>
> Jentro GPS4now Bluetooth GPS receiver - 49409
> https://www.morgancomputers.co.uk/shop/detail.asp?ProductID=6070
>
> Any good?
>
> Any good for linux as an ntp time source and also for location mapping?
>
>
> Cheers,
> Martin
>
>