Pisound micro not visible in Patchbox OS

Pisound Micro
1

I’m trying to setup my Pi 5 with Patchbox OS and a Pisound micro, but the latter is not visible. I’m typing patchbox and choosing jack to chagne its configuration settings, but with the default settings, the only available options are vc4hdmi0 and vc4hdmi1.

Following this thread, I did sudo dtoverlay pisound and aplay -l outputs:

**** 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: vc4hdmi1 [vc4-hdmi-1], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

I found this thread and followed it by commenting out dtoverlay=vc4-kms-v3d in /boot/firmware/config.txt and placing dtoverlay=pisound but it didn’t work. I tried changing pisound with upisound or pisound-micro but still no dice. With these settings, sudo dtoverlay pisound outputs:

* Failed to apply overlay '0_pisound-pi5' (kernel)

I’m trying this with the Pisound micro straight on top of the Pi, stacked with long headers to give enough space.

2

Pisound Micro does not get recognized automatically by the OS - it must be manually installed, this is to facilitate most flexibility possible. Skip the wizard (Ctrl + C) and follow the regular setup steps, mostly involving running the install script:

(remove your manual changes from config.txt first)

curl https://blokas.io/pisound-micro/install.sh | sh

Afterwards, run the wizard again:

patchbox wizard
3

I did this on a fresh install of Patchbox and Pisound micro was now visible! On a reboot though, I started Pd and jack couldn’t start. I then run patchbox and chose jack to set the audio interface. Pisound micro was there again, but I got this:

Error: Failed to start Jack service! Try different settings!

Side note, when runnging:

curl https://blokas.io/pisound-micro/install.sh | sh

I get this:

Your Linux kernel version (6.6.20+rpt-rpi-2712) is below the recommended kernel version (6.12.25)!
Please upgrade it first by running the below command and following on screen instructions, and run Pimidi install again!

sudo rpi-update

Running sudo rpi-update though fixes it and I could then install the Pisound scripts.

4

What settings did you use for Jack?

Check journalctl -u jack.service for any useful output.

5

Nevermind. It must be my PCB that goes in between Pisound and the Pi. Without it, it works fine. Sorry for the noise!

6

You can doublecheck the RPi GPIO header pins used by Pisound Micro here:

Some of the in-use pins can be shared with other boards, like I²C (as long as other devices are comfortable working at 400kHz baud rate).

1 Like