I have a Novatel OEMV1 GPS board that I want to connect to my Gluonpilot board. The OEMV1 uses 3.3V power. It has a communications port that is LVTTL. The Gluon board is 5V. Would it be safe to connect the two (as far as I know it would be)? I am planning to connect only the Gnd, Tx and Rx.
The Gluon and OEMV1 boards are currently powered by different batteries. I need 5.5-16V to power the active GPS antenna, so I’m using a 12V battery to supply power to the active antenna and a DC to DC converter to supply 3.3V for the GPS board. In the near future I plan to add a second DC to DC converter to supply 5V for the Gluon board.
I can control the OEMV1 board via software. I can set it to a chosen baudrate and I can tell it to provide RMC and GGA (I think these are the only two signals used by the Gluon board). I have no experience with NMEA, but I notice that the LS20031 documentation talks about MTK NMEA packets and starts messages with $PMTK while the Novatel documentation says that the messages start with (e.g.) $GPGGA and $GPRMC. Will the Gluon board handle this? Note also that my OEMV1 board is currently only running at a 1Hz rate, but could be upgraded to 10Hz. As soon as I hear back on the electrical connections I can give it a try. Any ideas about the best procedure or sequence to try?
Ben