pi@Picar-X:~/picar-x $ sudo bash i2samp.sh
Support for your operating system is experimental. Please visit
forums.adafruit.com if you experience issues with this product.
This script will install everything needed to use
i2s amplifier
— Warning —
Always be careful when running scripts and commands
copied from the internet. Ensure they are from a
trusted source.
If you want to see what this script does before
running it, you should run:
\curl -sS github.com/adafruit/Raspberry-Pi-Installer-Scripts/i2samp
Do you wish to continue? [y/N] y
Checking hardware requirements…
Adding Device Tree Entry to /boot/firmware/config.txt
dtoverlay already active
i2s mmap dtoverlay already active
Commenting out Blacklist entry in
/etc/modprobe.d/raspi-blacklist.conf
Reading package lists… Done
Building dependency tree… Done
Reading state information… Done
alsa-utils is already the newest version (1.2.8-1+rpt1).
The following packages were automatically installed and are no longer required:
libcamera0.3 libwlroots12 lxplug-network
Use ‘sudo apt autoremove’ to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Installing aplay systemd unit
Removed “/etc/systemd/system/multi-user.target.wants/aplay.service”.
You can optionally activate ‘/dev/zero’ playback in
the background at boot. This will remove all
popping/clicking but does use some processor time.
Activate ‘/dev/zero’ playback in background? [RECOMMENDED] [y/N] y
Created symlink /etc/systemd/system/multi-user.target.wants/aplay.service → /etc/systemd/system/aplay.service.
Configuring sound output
card_num=
We can now test your i2s amplifier
Set your speakers if possible!
Do you wish to test your system now? [y/N] y
Testing…
speaker-test 1.2.8
Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
Playback open error: -16,Device or resource busy
All done!
Enjoy your new i2s amplifier!
Some changes made to your system require
your computer to reboot to take effect.
Would you like to reboot now? [y/N]