Case for Matrix Voice and Pi3A+

Hardware
21

Hi,

the Sound Output is IMHO not hifi ready but a million times better than the PWM from the pi.

The magnetic field of the speaker itself isn’t a problem. Only changing fields like the one from the speaker coil are problematic but these are in the magnet of the speaker and so the have no effect to the pi.

Female bord jumpers wont work at all. Use a connector that fit eg from an old Laptop or whatever.
Audio Playing is a little tricky - i have done it by piping audio over command to the speakers → look at the guide at:

grafik

greetings

Andreas

22

Hi Andreas, first of all thank you for your response :slight_smile:

You have specifically linked to the Answer 9, but the file which is used for local command is in step 8.
Do I really need all those steps just for the speakers?

I’ve tryed to only link the file /home/pi/.config/rhasspy/profiles/de/copy-audio.sh, but this doesn’t work.

Also matrix-kernel-modules are already installed:

pi@himbipi2:~ $ pi@himbipi2:~ $ dpkg -s matrixio-kernel-modules
Package: matrixio-kernel-modules
Status: install ok installed
Priority: optional
Section: embedded
Installed-Size: 112
Maintainer: MATRIX Labs <info@matrix.one>
Architecture: all
Version: 0.2.3
Depends: dkms (>= 2.1.0.0), matrixio-creator-init, raspberrypi-kernel-headers, raspberrypi-kernel
Conffiles:
 /etc/asound.conf 4f54434eaeb7a0f953be41de21d57265
 /etc/modules-load.d/matrixio.conf 69c576b3bd1f00f896ef89ef224ff50a
Description: Source DKMS for MATRIXIO kernel modules.
Homepage: https://github.com/matrix-io/matrixio-kernel-modules

greetings
Nicolas

23

Hi,

at least you have to configure aplay because the standard output is the headphne jack.
You can try it yourself with simple headphones.

greetings