Brand new, (Wheres a 5th grader when you need one) and I know I'm likely repeating simple issues. I attempted install of the automatic method. (I actually reinstalled to produce the following output). aplay -l and aplay -L do not recognize any cards. Appreciate your patience in helping me work through this. I am purchasing another one of these cards. I am using the output channels to simulate current transducer outputs for a smart grid application. Embarrassed to show something so remedial.

pi@raspberrypi:~ $ sudo dpkg -i Downloads/audioinjector.octo.setup_0.4_all.deb (Reading database ... 156414 files and directories currently installed.) Preparing to unpack .../audioinjector.octo.setup_0.4_all.deb ... Unpacking audioinjector.octo.setup (0.4) over (0.4) ... Setting up audioinjector.octo.setup (0.4) ... updating the kernel Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom Performing self-update Relaunching after update Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom *** Your firmware is already up to date setting up /boot/config.txt backing up /boot/config.txt to /boot/config.txt.2020-05-29.16.10.27 setting up /boot/config.txt backing up /etc/asound.conf to /etc/asound.conf.2020-05-29.16.10.27 backing up /root/.asoundrc to /root/.asoundrc.2020-05-29.16.10.27 backing up /home/pi/.asoundrc to /home/pi/.asoundrc.2020-05-29.16.10.27 pi@raspberrypi:~ $ cat boot/config.txt cat: boot/config.txt: No such file or directory pi@raspberrypi:~ $ cat /boot/config.txt

For more options and information see

http://rpf.io/configtxt

Some settings may impact device functionality. See link above for details

uncomment if you get no picture on HDMI for a default "safe" mode

hdmi_safe=1

uncomment this if your display has a black border of unused pixels visible

and your display can output without overscan

disable_overscan=1

uncomment the following to adjust overscan. Use positive numbers if console

goes off screen, and negative if there is too much border

overscan_left=16

overscan_right=16

overscan_top=16

overscan_bottom=16

uncomment to force a console size. By default it will be display's size minus

overscan.

framebuffer_width=1280

framebuffer_height=720

uncomment if hdmi display is not detected and composite is being output

hdmi_force_hotplug=1

uncomment to force a specific HDMI mode (this will force VGA)

hdmi_group=1

hdmi_mode=1

uncomment to force a HDMI mode rather than DVI. This can make audio work in

DMT (computer monitor) modes

hdmi_drive=2

uncomment to increase signal to HDMI, if you have interference, blanking, or

no display

config_hdmi_boost=4

uncomment for composite PAL

sdtv_mode=2

uncomment to overclock the arm. 700 MHz is the default.

arm_freq=800

Uncomment some or all of these to enable the optional hardware interfaces

dtparam=i2c_arm=on

dtparam=i2s=on

dtparam=spi=on

Uncomment this to enable infrared communication.

dtoverlay=gpio-ir,gpio_pin=17

dtoverlay=gpio-ir-tx,gpio_pin=18

Additional overlays and parameters are documented /boot/overlays/README

Enable audio (loads snd_bcm2835)

dtparam=audio=on

[pi4]

Enable DRM VC4 V3D driver on top of the dispmanx display stack

dtoverlay=vc4-fkms-v3d max_framebuffers=2

[all]

dtoverlay=vc4-fkms-v3d

NOOBS Auto-generated Settings:

enable the AudioInjector.net sound card

dtoverlay=audioinjector-addons pi@raspberrypi:~ $ aplay -l aplay: device_list:272: no soundcards found... pi@raspberrypi:~ $ aplay -L null Discard all samples (playback) or generate zero samples (capture) anyChannelCount default pi@raspberrypi:~ $ ^C pi@raspberrypi:~ $ ^C pi@raspberrypi:~ $

Audio-Injector / Octo

Cards not detected by aplay -l or aplay -L #31