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<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| style="align:left;" | [[Image:Nuvola apps important.svg|25px|Outdated]]
| style="padding-left:5px;" | '''IMPORTANT:''' This page about Slabpi is outdated.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
{{Inventory
|Name=SlabPi
|Name=SlabPi
|Owner=Invict
|Owner=Space
|Status=Infrastructure
|Status=Infra
|Hostname=slabpi.dhcp.nurd.space
|Hostname=slabpi.lan.nurd.space
|Location=Near the amp
|Location=Near the amp
|Picture=Slabpi_newcase.jpg
|Picture=Slabpi2.jpg
|Tool=No
|Tool=No
}}
}}
SlabPi is the replacement for [[Slab]] on a Raspberry Pi 3. It has been moved, because of [[downscaling]].


It runs the MPD Server and espeak. It is running on [http://berryboot.alexgoldcheidt.com/images/ Raspbian Stretch Lite] with [http://www.berryterminal.com/doku.php/berryboot berryboot].
*** 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.


RAM increased with [https://www.novaspirit.com/2016/12/24/increasing-ram-raspberry-pi zram].
*OS: [https://wiki.ubuntu.com/ARM/RaspberryPi Ubuntu 20.04 aarch64]
*Rpi: Raspberry pi 4 4GB
*SD: 32GB


==espeak==
== Setup ==


Espeak is now functional, there were ALSA problems.
=== Disabled/removed services ===
* disabled unattented-upgrades
* disabled wpa_supplicant
* disabled accounts-daemon
* disabled multipathd
* ubuntu motd spam
* removed snapd


==Motion webcam==
=== Networking ===
Running motion for webcam, see [http://slabpi:8081/ this link]
It is hooked up with UTP. WLAN has been disabled.
We might want to lower the resolution if motion keeps crashing.
===DAC+===


==MPD==
[https://www.itead.cc/hifi-dac-for-raspberry-pi.html PiFi HIFI DAC+] for better audio quality.


Fixed an issue where MPD hangs on song change. Fix it by uncommenting "device" option in the "audio_output" block (in my case ALSA) in mpd.conf. This is a common error.
Installation:
Edit /boot/config.txt


Disable the line
#dtparam=audio=on


Connection through client.
add
dtoverlay=hifiberry-dacplus


===MPD===


Host: slabpi.dhcp.nurd.space
Host: slabpi.dhcp.nurd.space


Port: 6600
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 [https://github.com/jcorporation/myMPD 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


==Eco button as mpd skip button==
A python tool for starting and stopping systemd services via mqtt using homeassistant (ledfx, waterfall etc)
We have this cute usb Eco Button lying around, which is meant to put your computer in sleep mode in order to save energy. It would be nice if we could use it as an mpd next button.


Button gets recognized as shown in dmesg:
=== Soundboard ===
<pre>[ 1856.485618] hid-generic 0003:0C50:1010.0003: hiddev0,hidraw0:
* Location: /home/pi/soundboard
USB HID v1.10 Device [One small click One big change One small click One big change]
* Systemd-service: soundboard.service
on usb-0000:00:1d.1-2/input0</pre>
* Programmer: [[User:Melan]]
After reading [http://www.greygreen.org/blog/code/python/ecobutton-linux] I was hoping this would be easy, but it seems this particular button does not generate keypresses in X.


So over to [https://github.com/s-leroux/hid_mapper], and more info on [https://forum.kodi.tv/showthread.php?tid=88560]. Got an error similar to [https://github.com/Claudio-Sjo/HID_linux_xbmc_driver/issues/1]. After editing hid.c it compiles.
Allows samples to be triggered through MQTT, also handles the doorbell sound.


And it does stuff too \o/:
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.


<pre>
===  MPD Vol Proxy ===
dell@zeekoe:~/nizzle/hid_mapper$ sudo ./hid_mapper --learn --manufacturer 'One small click One big change' --product 'One small click One big change' --map
* Location: /home/pi/mpdVolProxy
Found HID device
* Systemd-service: mpdvolproxy.service
Opened HID interface on /dev/hidraw0
* Programmer: [[User:Melan]]
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
02 80 24 08 36 20 08 88
02 19 01 8f 92 11 00 a8
</pre>


So it seems that after the button is pressed, a sequence of two events is repeated X times (seems to depend on how long button is pressed).
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.
I'm having trouble feeding it the correct map file. With a map file like this:


<pre>
=== MPDTube ===
0219018f921100a80280240836200888:KEY_UP
* Location: /home/pi/mpdtube
</pre>
* Systemd-service: mpdtube.service
or this:
* Programmer: [[User:Melan]]
* Git: https://github.com/NURDspace/MPDTube


<pre>
This project has its own wiki page, [[MPDTube]]
0219018f921100a8:KEY_DOWN
0280240836200888:KEY_UP
</pre>


it spits out this error:
=== PulseControl ===
<pre>
* Location: /home/pi/pulseControl
dell@zeekoe:~/nizzle/hid_mapper$ sudo ./hid_mapper --manufacturer 'One small click One big change' --product 'One small click One big change' --map 'eco.map'
* Programmer: [[User:Melan]]
Loading eco.map


Error loading map file eco.map
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.
[ MapReader ] Unknown key name at line 1
</pre>

Latest revision as of 16:53, 25 March 2024

Outdated 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
Slabpi2.jpg
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


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.

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

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

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

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.

Retrieved from "https://nurdspace.nl/index.php?title=SlabPi&oldid=14000"
Last modified
This page was last edited on 25 March 2024, at 16:53.