Reading NMEA from GPS and output it in the USB port
I'm trying to set up NMEA-0183 "network" on my boat. I've a Globalsat BU-353 GPS puck that connects to my Netbook with Ubuntu Jaunty over an USB port. Works fine so far.
Now I want to forward NMEA sentences to my VHF-radio which has an NMEA input:
To get the signal to the GPS i guess I'll need an USB to serial converter (the Netbook doesn't have a serial port), writing the NMEA strings to the USB port and connect the serial line to the VHF GPS-pins, Am I right?
Has anyone tried this before? I've heard that one should use opto-couplers when connecting NMEA devices, is this necessary when running all equipment on the same 12v system?
Someone who has this working or can point me in the right direction would be very appreciated!
Last edited by OlaJi; 05-21-2009 at 04:08 AM.
Reason: Drawing missleading