NMEA

From software version 2.02a (FlightCtrl/NaviCtrl) we can also send the NMEA signal from the UBlox GPS.
If you use a camera with integrated data logging you can use this data to save the position data n the pictures.

You can get the NMEA signal on the contacts PIN9 (TxD) + PIN7 (GND) of your serial output (FlightCtrl V3) or Debug port (NaviCtrl). The data records RMC & GGA are sent with 57600 Baud '(default) / TTL (5V).

Setting

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To send the NMEA signal via PIN9 you need a microSD card (max. 2GB/FAT16) in your FlightCtrl V3 / NaviCtrl.

On this microSD card you find the file "SETTINGS.INI". You can open and change this file via an editor.
The output interval of the NMEA signal is set with the parameter NMEA_INTERVAL.

• # NMEA Output interval in ms (0 = disabled)
  NMEA_INTERVAL = 0

By default, the output is disabled (NMEA_INTERVAL = 0)
If you need a signal e.g. every 500ms set here a "500" (NMEA_INTERVAL = 500)

The output is 57600 baud. From SW-Version 2.20 you can change the output speed
under "# Baudrate for the PC-UART".

• IMPORTANT:
  If you change the baud in your SETTINGS.INI all data will be send in this speed !!!
  So if you use e.g. a wireless connection between Copter <-> PC you also have to change here the speed!

• INFO:
  If there is no Parameter "# NMEA Output interval in ms" in your SETTINGS.INI, delete the "SETTINGS.ini" on your microSD card. After you power up the copter the Software on your copter will create a new "SETTINGS.INI" with the needed parameters.

Check output

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If you set a NMEA_INTERVAL in your SETTINGS.INI, you can check the output data in the terminal window of your KopterTool.

For this "click" the button [-> NaviCtrl] in your KopterTool and then the
button [Firmware update & Terminal] to open the terminal window.
Here you should now see some data like this:

Connection

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In these examples the connection is described:

More informations about NMEA

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More informations about NMEA format you can find here:

• http://www.kowoma.de/gps/zusatzerklaerungen/NMEA.htm

• http://aprs.gids.nl/nmea/