[OSM-talk] more accurate open-source gps hardware

[Michael Kugelmann]

Alex S. wrote:
> http://blog.makezine.com/archive/2009/11/diy_real_time_kinematic_gps.html
>   
I would be interested not in a GPS that is very accurate but which is 
coupled with a gyro to be able to also work in tunnels like an 
underground line.
Did anybody read something like that? I mean: having a small device for 
affordable price...


Best regards,
Michael.