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Hi Joe,

You can use audio device names rather than numbers, the names won't change between reboots.
If you run "aplay -L | grep -A1 plughw" you'll see a list of devices and their descriptions, example:

# aplay -L | grep -A1 plughw

plughw:CARD=Device,DEV=0
??? USB PnP Sound Device, USB Audio
--
plughw:CARD=PCH,DEV=0
??? HDA Intel PCH, ALC221 Analog
--
plughw:CARD=NVidia,DEV=3
??? HDA NVidia, HDMI 0

--
plughw:CARD=NVidia,DEV=7
??? HDA NVidia, HDMI 1

This shows I have 4 audio devices. If I wanted to use the USB Audio device with direwolf I would configure it as:
ADEVICE plughw:CARD=Device

If I had more than one of the same types of devices (e.g. I have two NVidia HDMI ports that use the same CARD identifier) then I'd have to include the ",DEV=x" to specify which one I want, e.g.
ADEVICE plughw:CARD=Device,DEV=0
But as you only have one of those USB devices, you don't need to specify which one.

BTW the 'Device' name comes from the last word in the card's product identifier string set by the manufacturer, the word itself has no significance.
My USB card calls itself a "USB PnP Sound Device" and yours is a "USB Audio Device".

Josh VK2HFF

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Hello Joseph,

I am using a pi400 with one ugreen usb sound card.? I have a usb serial port in? the second usb port for ptt

Ok..

List of PLAYBACK Hardware Devices ****

card 0: vc4hdmi0 [vc4-hdmi-0], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]

? Subdevices: 1/1

? Subdevice #0: subdevice #0

card 1: Device [USB Audio Device], device 0: USB Audio [USB Audio]

? Subdevices: 1/1

? Subdevice #0: subdevice #0

card 2: vc4hdmi1 [vc4-hdmi-1], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]

? Subdevices: 1/1

? Subdevice #0: subdevice #0

The valid card is 1 and my ADEVICE is plughw:1,0.

When I enter arecord-l i get this

List of CAPTURE Hardware Devices ****

card 1: Device [USB Audio Device], device 0: USB Audio [USB Audio]

? Subdevices: 1/1

? Subdevice #0: subdevice #0

Ok... what I'm seeing here is two audio playback devices through to HDMI monitors. ? Is this one HDMI monitor or two?? Across reboots, do these card0, card1, card2 assignments really move around?? Do you actively use this HDMI monitor based audio?? If not, consider disabling it which should solve your issue.? If you do want it, you probably only need audio on ONE monitor.? Here is a URL to investigate how to disable it one one/both:

? ?


--David
KI6ZHD

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Hello Joseph,

I have dw 1.8 on my raspberry pi3b+.which has been working well.? I would like to investigate how I can better start dw.? As the manual suggests, I first find the input and output parameters using arecord and aplay .? I enter those values in direwolf.conf under ADEVICE.? The values I put in ADEVICE are subject to change with every reboot and do.

Unless you have multiple sound devices connected to your Rpi, this shouldn't be happening.? If you do have multiple devices, you can tune Udev to make the device to names predictable.? Here are two links you should check out

??

????? or

??

--David
KI6ZHD

? The manual mentions that the values in direwolf.conf can be overwritten by using command line options when starting dw.? This would avoid me having to edit the direwolf.conf file each time I need to change the parameters.? I have tried several options but dw fails to start every time.? Can someone point out my mistake or point me to the page in the manual where I can find this?

?

Thanks.

?

?

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Hello Doug,

1. Your direwolf.conf config looks ok but I have some ideas:

?? 1.a. There is trash in there like the following.? It's recommended to clean that up

? ? ? ? \xe0\xb8\xa7\xe0\xb8\xb4\xe0\xb8\x97\xe0\xb8\xa2\xe0\xb8\xb8\xe0\xb8\xaa\xe0\xb8\xa1\xe0\xb8\xb1\xe0\xb8\x84\xe0\xb8\xa3\xe0\xb9\x80\xe0\xb8\xa5\xe0\xb9\x88\xe0\xb8\x99"

?? 1.b.Your TBEACON line is sending both too often (every minute) and also sending to WIDE2-1.

?????? TBEACON DELAY=0:05 EVERY=1:00 VIA=WIDE1-1,WIDE2-1 SYMBOL=/k

? ? ???? - To transmit less with your APRS tracker, simply add the term "SMARTBEACONING" without any other options to the direwolf.conf file

? ? ???? - If your in a urban area with a lot of APRS digipeaters around, WIDE1-1 should be more than enough

?? 1.c, At the bottom of your file, you have other items that need tuning:

?????? FX25TX 1?? - remove this, APRS generally does NOT use FX25, really only HF packet uses this
?????? PERSIST 63 - don't configure this, leave it to direwolf to set the defaults
?????? SLOTTIME 12 - don't configure this, leave it to direwolf to set the defaults
?????? RETRY 5???? - don't configure this, as this is mostly only for classic packet.. not APRS.? leave it to direwolf to set the defaults
?????? FRACK 5???? - don't configure this, leave it to direwolf to set the defaults
?????? MAXFRAME 4 - don't configure this, as this is mostly only for classic packet.. not APRS.? leave it to direwolf to set the defaults
?????? PACLEN 128? - don't configure this, as this is mostly only for classic packet.. not APRS.? leave it to direwolf to set the defaultsDWAIT 5

?????? TXDELAY 50? - this is excessively high.? What radio do you have?? Set this to "25" to start and depending on which radio you have, this might come down to 12 (aka 120ms)

?????? TXTAIL 35??? - this is excessively high.? Per your orignal post "APRS\ Tracker.docx" file, you using an Rpi4, What OS (version and is the GUI running)?? What sound card?? Set this to "10" to start and depending on your setup you have, this might come down to 1, 5, or not needed at all



2. Your DIrewolf startup screen-capture but it's clear at least your RX mixer level needs to come down to a rough "50" average.? Since this is way out of whack, I have to assume your TX level is also wrong.? If that's wrong, no remote station will be able to decode your signals.? How confident are you that your sound mixer levels are correct?? Check out for some ideas.? Also see my commend below where you're NOT restoring your saved alsamixer levels.? This is bad!


3. Per your orignal post "APRS\ Tracker.docx" file, few thoughts:
??? - Do NOT remove PulseAudio.? This isn't nessisary and will most likely screw up the OS install

??? - this doc mentions the user "pi" which has been deprecated for a very long time.? You really should only be using Raspberry Pi OS Bookworm (Debian 12) these days

??? - While you are saving the alsamixer levels, you are NOT restoring them before you start direwolf.? You need to run "alsactl restore" before you run direwolf.? You can add this into the dw-start.sh script if you wish.

??? - Under your persistent storage section, all the hwclock stuff is actually for the GPS section and/or adding a RTC (highly recommended for any Raspberry Pi aprs node -


--David
KI6ZHD

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Hello Doug,

I need help getting Direwolf connected to the “live” gps location.

Just to reset, please post your direwolf.conf file.? In reviewing this old email thread, it's key that you're using a TBEACON setting (aka APRS SmartBeacon) if you want to have "live" position reports.

Also, consider starting Direwolf with "-d t" to print out tracker beacon details on the terminal where you start Direwolf to learn more.

--David
KI6ZHD


?????? -d x?? Debug options.? Specify one or more of the following in place of x.
???????????????????? a = AGWPE network protocol client.
???????????????????? k = KISS serial port client.
???????????????????? n = Network KISS client.
???????????????????? u = Display non-ASCII text in hexadecimal.
???????????????????? p = Packet dump in hexadecimal.
???????????????????? g = GPS interface.
???????????????????? W = Waypoints for position or object reports.
???????????????????? t = Tracker beacon.
???????????????????? o = Output controls such as PTT and DCD.
???????????????????? i = IGate
???????????????????? h = Hamlib verbose level.? Repeat for more.
???????????????????? m = Monitor heard station list.
???????????????????? f = Packet filtering.
???????????????????? x = FX.25 increase verbose level.
???????????????????? d = APRStt (DTMF to APRS object conversion).