OK James,
I have been doing a bit of reading and research on your behalf. As I now understand it, the situation is as follows...
Assuming you are
NOT using the bare-ended FTDI cable and are instead using a USB to RS232 Serial Converter Cable
with a male db9 connector already fitted (which I'm pretty sure you are), the PAW Tx (Out) from your USB to RS232 Serial converter cable should be on the Male Pin 3 (TxData) and Ground on Pin 5 of your Male db9 connector - see attached photo of male db9 plug.
From the Dynon Installation Manuals (obtainable online from
https://dynonavionics.com/documentation-overview.php), the Dynon Serial Port wires normally come as 'twisted Tx/Rx Pairs' - yellow with orange stripe / yellow with violet stripe for Serial Port 2, green with orange stripe / green with violet stripe for Serial Port 3, and blue with orange stripe / blue with violet stripe for Serial Port 4. (Serial Ports 1 and 5 are for specific uses, so should
NOT be used). Note: These twisted pairs each comprise a Transmit Data and a Receive Data wire. We aren't using the Transmit Data wire, but
DO need to add a Ground Wire back to the common Dynon Ground (normally solid black wires) to complete the circuit.
This means that you need to obtain a female db9 RS232 socket, then decide which Dynon Serial Port you are going to use - (normally Port 2 or Port 3 - your choice, but take a careful note of which port you decide on - you will need this to configure the port later). Wire the Dynon
Rx Data wire from your selected Serial Port - so 'yellow with violet stripe' for Dynon Serial Port 2 or 'green with violet stripe' for Dynon Serial Port 3 - to
Pin 3 of your Female db9 socket and add a 'solid black' (Ground) wire from Pin 5 of the Female socket back to the Dynon common ground. - see attached photo of Male/Female db9 sockets.
Once all the connections have been made, you then need to configure your chosen Serial Port in the Serial Port Setup Menu (SETUP MENU > SYSTEM SETUP > SERIAL PORT SETUP) - refer to your Dynon Manual.
According to the Dynon Manual, SkyView serial ports have four parameters that must be defined:
• Input Device
• Input Function
• Baud Rate
• Output Device
Note that sometimes a parameter will be defined as NONE on the screen. For example, when a serial port is configured as only an input device (as in our case), the output device will be set to NONE.
You need to select your chosen Serial Port, then set the
SERIAL IN DEVICE to
FLARM TRAFFIC, the
INPUT FUNCTION to
TRAFFIC and the
SERIAL IN/OUT BAUD RATE to a minimum 0f 57600 Baud (though 115200 Baud is probably better) and the
SERIAL OUT DEVICE to
NONE.
You then need to connect to your PilotAware (via the PAW WiFi and 192.168.1.1 / Configure) and set your chosen PAW USB Port to 'Flarm Out'
with the same Baud Rate as you have set in your Dynon.
Don't forget to 'SAVE' the new PAW Configuration
After rebooting both units and allowing a sufficient period for PilotAware to establish a GPS fix, you should start to see Traffic Data on your Dynon Screen (providing there is traffic in range / within any set altitude filters.
If in doubt, check the screenshots in the earlier thread here...
http://forum.pilotaware.com/index.php/topic,819 ...note that Bob has used Dynon Serial Port 2.
Hope this helps.
Again, please let us know how you get on.
Best Regards
Peter