Currently Being ModeratedJan 20, 2013 3:40 AM (in response to xnav)
Are you by any chance the one who wrote Xnav navigation program for the iPad? That program is on my wishlist and also part of the reason I'm tinkering around with this project.
When I connect the NMEA gps steam to my iPad I want to include data from other instruments.
Xnav can, i think, include the data anyway by giving the right settings. But I would like to do this through the locationservices so other nav programs can make use of the GPS data too. I probably have to split up the other instruments NMEA data and the GPS NMEA data, but that is a later worry.
Buying an iPad with build in gps. Is the build in GPS accurate enough for proper navigation at sea? No assistance there. The price difference here in Holland between selling,wifi, seccond hand and buying,3G, seccond hand is about €75 ($99).
And besides I would realy like to solve this technical mystery. Then I can put it up my blog and others can also have cheap navigation on their iPad wifi as long as they are not afraid for the soldering iron
Currently Being ModeratedJan 20, 2013 6:31 AM (in response to JelbertH)
Are you by any chance the one who wrote Xnav navigation program for the iPad?
No, I'm not. The iPad GPS is as accurate as the iPhone's. Relying on a 'cheap' nav solution at sea could be a mistake.
Currently Being ModeratedJan 20, 2013 11:57 AM (in response to xnav)
Yes if it was the only gps onboard. But lets see there is the chart plotter with its own gps, then the secondary chart plotter with its own gps a spare low power gps and in case all else fails and then there is my iPhone 3gs.
I guess i'm covered. And if all of those fail there is an emergency AIS beacon that also has a GPS build in. These chart plotters create a NMEA data output and it would be so sweet if I could also use this on the iPad.
I figured out that the mifi devices probably use the zeroconf network setup and that this would also work for GPS on iPad. This is not tested yet.
The cheapest least reliant GPS in the above list is the iPhone 3gs, using a bad antena and relying on wifi signals and cel tower data to get a quick fix. However there are non of those around at sea.