Re: No audio detected (FLDIGI) #fldigi #audio #configuration #cat #cw

Basil Gunn

There are two possible choices for radio receive data with ALSA settings
for each.

There is not a lot of description on the ACC port for your radio so I'm
going to assume AF_OUT is your 1200/300 baud receive pin & DATA is your
9600 baud receive pin and AF_IN is your transmit data pin. There is a
good chance that I have this wrong so a little empirical testing
will serve you well.

On the DRAWS side make sure that you are selecting IN2 with alsamixer to
use AF_OUT.
Run to verify.

Read this for more information on interfacing & controls.

From the above document.

The DRAWS™ board wires all of the "L" pins to the left DIN-6 connector
and all the "R" pins to the right DIN-6 connector. The IN1 pins are
wired to the "9600 baud" or "discriminator" pin on the DIN-6, and the
IN2 pins are wired to the "1200 baud" or "audio" pin on the DIN-6.
Please note that IN3 is not used or connected anywhere on the DRAWS™.

Depending on which DRAWS mDin6 connector you are connected to you can
control your PTT pin on your ACC port.
Left connector port 0, GPIO 12
Right connector port 1, GPIO 23

There are some notes for setting up FLdigi using older NW Digital hats

Hope that helps.

/Basil n7nix

Michael Sharp via Groups.Io <> writes:

I am attempting to connect a Xiegu G90 to the DRAWS Hat. I am using a custom made cable from Ham Made Parts. Using my oscilloscope, I can definitely confirm that there is audio coming from the G90 through the custom cable. The cable will connect directly from the ACC port of the G90 to the DRAWS Hat Right Channel.

I am using the latest DRAWS image for Raspberry Pi 3, and I would like to use the DRAWS Hat with FLDIGI so I can send and receive CW.The problem I am having is that I don’t see any audio coming through to FLDIGI. Also, I am a bit overwhelmed with all of the configuration options in the Audio Mixer that the DRAWS Hat offers. Which inputs or outputs do I enable? Do I need to set the attenuators? How does the DRAWS Hat show up as a CAT control?

There certainly seems to be a lot of flexibility in this card to say the least. I’m sure that the problem is a configuration problem, possibly even needing Permissions or Group Access (?) from the Raspberry Pi OS.

Any help appreciated... Thanks in advance!


Join to automatically receive all group messages.