I work in the navy, and in my ship I have a Ring laser gyroscope that sends NMEA information to a digital heading repeater. This information is sent in RS-422 protocol.
What happens now is that this Digital Heading Repeater is not working properly and I am thinking on making a digital heading repeater with Arduino.
I have neve user this protocol before and I don´t have any idea on how to get the heading from the NMEA string coming in RS422 protocol.
I tried connecting it to the Rx pin, to see the signal in the serial port of the computer, but it did not work at all.
Please I need you help!!!