Daniele Fua wrote:
Is there an easy way to build a display that will show some chosen NMEA
data?
I have seen on the market programmable units that sell for several
hundred $ and I know that a computer is easily interfaced but what I
need is just a simple, cheap and weatherproof repeater at the helm to
display only few of the zillion data available at the underdeck main
navigation station. For example decoding just part of BWC and VTG and
displaying, say, four lines would be enough (COG, heading, bearing to
waypoint, and distance to waypoint).

Daniel
Any old pc/laptop wold show the stream with:

copy com1 con

assuming the stream it connected to com1 serial port with the
right baudrate.