Thank you for making a wonderful product that is in most ways superior to commercial
products. I was able to test it extensively a week ago and I noticed a major bug in GPS
tracking and a minor bug too.
Whenever the Minutes would be below 10 (e.g. 9.99 or lower) no matter if it is latitude or longitude reading the program would put me in the wrong area of the globe. If latitude met this criteria I would be in South America
(Colombia), if longitude met this criteria I would be in Europe
, and if both were met, then I would be in NW Africa
The trip I made was from Norfolk, VA to New York
, NY and never left this area of the globe during the transit.
I examined the NMEA
stream and when in these areas it was shortened by one digit. Therefore, the GPS
parsing routine needs to be rewritten to accommodate for this, or at least another error trap be written into it.
I have several screen
captures while this was occurring.
Another GPS error is the Course over ground was off by 50%, While doing 44 degrees, it indicated 22 degrees, and while doing 30 degrees it indicated 15 degrees. From what I remember this only occurred moving in the NE quadrant for direction.
I am also using my Android tablet as a GPS source, it will transmit the position to the Windows 7 notebook via Bluetooth on COM8: with the android program "ShareGPS" (OpenCPN doesn't see this port) and is redirected using the Franson GPSgate to COM2: which OpenCPN
Feature Requests / Bug Fixes:
1. Rewrite GPS parsing to properly recognize cooridinate
2. Fix GPS COG
3. Allow for manual configuration of GPS to see more than the com ports
that it thinks is active.
Please send a private message if you want the screen
shots (they are in a Word Document).
A seperate request is that I really would like to see a port to Android Tablet as my Transformer Prime has 16 hours of battery
life, and built-in GPS, accelerated graphics and enough storage
to handle all US charts
(both raster and electronic), this would eliminate to take my notebook along with me, and stick with a more durable and robust tablet.
Thanks for your time and attention to these issues.
As this is my first posting
, I didn't see a bug report area, so I figured this was the next best thing, please move to an appropriate area if I posted this in the wrong area.