Hi,
I have been collecting
NMEA logs from
OpenCpn using the VDR
plugin, with a view to analysing them for performance when sailing. However not having thought this through properly they all contain periods when I'm motoring. I'd like to remove these with a simple program but I'm not having much luck finding some way of identifying when the
engine is running. One way of doing this would be by examining the the instrument supply voltage as it would be higher when
charging. Is anyone aware of any
NMEA sentence which reports the instrument supply voltage? I haven't been able to find one. Alternatively can anyone think of a smart trick to distinguish sailing data from motoring data? My
engine has no NMEA reporting.
Thanks in advance,
Aedan