SlabPi: Difference between revisions

Latest revision as of 16:53, 25 March 2024

IMPORTANT: This page about Slabpi is outdated. Now a days, Slabpi is only running a snapcast client and cups for the label and recipe printers.

Please see spacesound instead

SlabPi

Owner	Space
Status	Infra
Hostname	slabpi.lan.nurd.space
Location	Near the amp
Tool	No
Tool category

SlabPi

Slabpi2.jpg {{{InventoryOwner}}}Property "Tool Owner" (as page type) with input value "{{{InventoryOwner}}}" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. Near the amp

- - REPLACED BY SLABNUC ***

What

SlabPi is the replacement for Slab on a Raspberry Pi 4. It has been moved, because of downscaling. And recently got upgraded from a rpi3 to a rpi4, it has a DAC+ Hat for better audio quality.

OS: Ubuntu 20.04 aarch64
Rpi: Raspberry pi 4 4GB
SD: 32GB

Setup

Disabled/removed services

disabled unattented-upgrades
disabled wpa_supplicant
disabled accounts-daemon
disabled multipathd
ubuntu motd spam
removed snapd

Networking

It is hooked up with UTP. WLAN has been disabled.

DAC+

PiFi HIFI DAC+ for better audio quality.

Installation:

Edit /boot/config.txt

Disable the line

#dtparam=audio=on

add

dtoverlay=hifiberry-dacplus

MPD

Host: slabpi.dhcp.nurd.space

Port: 6600 (Technically 6005, see the mpd proxy service)

It is integrated with Home Assistant view on Jarvis.

HTTPD outputs:

port 6666 (8000:16:1) used by the VOIP system
port 7777 (44100:16:2) used by Audiophiles

PulseAudio

All pulseaudio changes need to be made in /etc/pulse/system.pa (default.pa isn't used)

Pulseaudio is running as a system-wide daemon, it's default sample rate is set to 48Khz and priority has been set to real time.

Icecast

There is an icecast server on port 8000. It's a direct feed from Pulseaudio so all sounds (Entrance themes, speak commands) will be heard on the stream.

Mount point(s):

/nurds (Pulseaudio)

MPD Control

For those not wanting to install a MPD client, there's a stand alone MPD web interface running called Mympd on port 80

Labelprinter implementation

Labelprinter is up and running. See Labelprinter.

Services

Entrance Themes

Location: /home/pi/scripts/theme_songs.py
Systemd-service: themesongs.service
Programmer: User:Melan

A script which plays a part of a song for each individual member entering the space. See Entrance themes.

MPD Icecast update

Location: /home/pi/scripts/mpd_icecast_update.py
Systemd-service: mpdicecastupdate.service
Programmer: User:Melan

Updates the current now playing song from MPD to the icecast mount /nurds

Vu Meter

Location: /opt/vu
Systemd-service: vu.service
Programmer: User:Zarya

https://gist.github.com/zarya/3d5447556296d6923bee232e4cc7fca1

LedFX

Location: /home/pi/.ledfx.sh
Systemd-service: ledfx.service
http://slabpi:8888/dashboard

Pixelvloed FFT

Location: /opt/pulse-pixelvloed-fft
Systemd-service: fft.service
Programmer: User:Zarya

Pixelvloed waterfall

Location: /opt/pulse-pixelvloed-fft
Systemd-service: waterfall.service
Programmer: User:Zarya

hass-systemd-manager

Location: /opt/hass-systemd-manager
Systemd-service: manager.service
Programmer: User:Zarya
git: https://github.com/NURDspace/hass-systemd-manager

A python tool for starting and stopping systemd services via mqtt using homeassistant (ledfx, waterfall etc)

Soundboard

Location: /home/pi/soundboard
Systemd-service: soundboard.service
Programmer: User:Melan

Allows samples to be triggered through MQTT, also handles the doorbell sound.

Als 't niet werkt, dan even inloggen op coherence en vanaf daar op vm 107 en daar proces 'python main.py' afschieten. Dat helpt soms na 1 of meer keer.

MPD Vol Proxy

Location: /home/pi/mpdVolProxy
Systemd-service: mpdvolproxy.service
Programmer: User:Melan

A small script that intercepts all the clients connecting to MPD on port 6000 and intercepts all setvol commands and instead delegates it to Pulseaudio, meaning that any volume command will not adjust MPD's output, but the output to the amplifier instead.

MPDTube

Location: /home/pi/mpdtube
Systemd-service: mpdtube.service
Programmer: User:Melan
Git: https://github.com/NURDspace/MPDTube

This project has its own wiki page, MPDTube

PulseControl

Location: /home/pi/pulseControl
Programmer: User:Melan

Part of the multi-room audio setup, it will ping if any of the defined hosts are up and once they are it will add their pulseaudio instance to the output.

@@ Line 1: / Line 1: @@
+<div class="borderc5 backgroundc2" style="padding:0; margin:0 0 0.5em 0; border-style:solid; border-width:medium">
+{| width="100%" align="center" style="text-align:left; "
+| style="align:left;" | [[Image:Nuvola apps important.svg|25px|Outdated]]
+| style="padding-left:5px;" | '''IMPORTANT:''' This page about Slabpi is outdated. Now a days, Slabpi is only running a snapcast client and cups for the label and recipe printers.
+Please see [[spacesound]] instead
+|}</div>
 {{Inventory
 |Name=SlabPi
@@ Line 8: / Line 16: @@
 |Tool=No
 }}
+*** REPLACED BY [[SLABNUC]] ***
 ==What==
 SlabPi is the replacement for [[Slab]] on a [https://www.raspberrypi.org/products/raspberry-pi-4-model-b/ Raspberry Pi 4]. It has been moved, because of [[downscaling]]. And recently got upgraded from a rpi3 to a rpi4, it has a DAC+ Hat for better audio quality.
@@ Line 27: / Line 39: @@
 === Networking ===
 It is hooked up with UTP. WLAN has been disabled.
-==
 ===DAC+===