Your proposed setup, including Ais, raises a number of issues, which can be addressed by a combination of hardware
. The issues:
1. you need to buffer the signals from the various instruments and devices, to avoid data/signal collision
. A multiplexor will do this, providing a single
coherent stream of signals to your PC.
2. Your ST40 instruments speak SeaTalk
, you need a translator to convert to NMEA
, either a stand alone translator, or one built into your multiplexor.
3. Your ST2000 should speak and hear SeaTalk
and NMEA (mine does), but please double check your manual. If it doesn't speak and hear SeaTalk, you can feed the speak into the multiplexor in 2. above, don't know about the hear.
4.The BAUD rate on your AIS will be higher than on everything else, a good multiplexor will address that, and send signals to your PC at a single
BAUD rate. Look for a multiplexor with an input port specifically tailored for AIS.
5. You will likely want several devices/programs to listen in/share on the NMEA data stream from a single Com port, this can be addressed by software in your PC
Brookhouse NMEA multiplexers Home Page
provide a multiplexor with SeaTalk translator, AIS port, etc., and it can input to your PC via usb. Suggest you read all of their site carefully. I have a mix of SeaTalk and Nmea devices, and am happy with my multiplexor from them. There are other multiplexors available.
is a software solution to sharing a Com port, and also displays information from your instruments in form not currently available in OpenCPN. http://yachtvalhalla.net/navigation/...c/navmonpc.htm
has some uses of NavMonPC described. There are other software packages also available.
Charting software....well, its over to you. OpenCPN will do most, maybe all of what you want to do. Not sure if it will drive your autopilot
. But, you can always put in a request. I reckon Open CPN
is one of the most exciting developments going on....more power to the developers.
My main package is SOB DigiBOAT Navigation Software
, it takes input from all your instruments and displays wind
polars, performance vectors etc, will drive your autopilot according to wind, bearing, waypoint, etc. Very powerful package. However, I hesitate to recommend it: the aussie developer recently sold
out to some poms who seem to know nothing about sailing or computing, and are doing a convincing imitation of sinking the product. Also, it will only run on C-MAP
Max, which is expensive. However, you might like to look at the free trial version and user manual, to see what it can do.