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Portable Musicbox

Musicbox

[TOC]

What do you need?

Hardware

  • Raspberry Pi, at least Version 3B
  • TFT Display
  • Rotary Encoder
  • Hifiberry MiniAmp or maybe an Infineon MERUS
  • two small Speakers, for example Visaton FRS8
  • USV hat, for example Geekworm/SupTronics X750
  • RTC
  • SDCard where the OS is running from
  • USB Stick where all your local music is stored
  • a bunch of cables like USB, HDMI and power extension cables

Software

Download Volumio and put it on SD Card

see Quick-Start-Guide-Volumio.pdf

Initial setup

see step (5. Volumio configuration on the Web-UI).

If it comes to the third step ("Configure your DAC - Audio Output") choose the DAC device:

Hifiberry Miniamp

Go to Volumio playback settings.

Soundcard: Hifiberry Dac
Mixer Type: Software

After everything is setup you have to reboot and connect to device via your chosen device name with an additional .local, for e.g. volumio.local.

Set volume options

  1. Einstellungen > Wiedergabeoptionen > Lautstärke-Einstellungen > Art des Mischers: Software > Speichern
  2. Standard-Lautstärke: 20
  3. Lautstärke-Schritt pro Klick: 4 > Speichern

Privacy settings

Systemeinstellungen > Privacy settings > Allow UI Statistics Collection: enable or disable by your preference

Plugins

Install

  • Music Services
    • Spotify 2.0.3 / allows browsing your Spotify playlists, albums, artists inside Volumios UI
    • Volumio Spotify Connect2 1.0.5 / allows seemless switching of devices with "My Devices" in Spotify Web and Apps
  • Miscellanea
    • Amplifier Switch 0.1.2
  • System Tools
    • -GPIO Buttons 0.8.1-
    • GPIO Control 0.0.1
    • -Backup & Restore Data 0.7.2-
  • User Interface
    • Rotary Encoder 1.2.2

Configure plugins

Amplifier Switch 0.1.2

  • Output: 16

Spotify

  • set Username & Password > Authorize

Volumio Spotify Connect2

  • Multi-User Device: off

GPIO Control

BCM27 / Pin 13 / Volumio Status LED / on if loaded and configured via GPIO Control Plugin

Rotary Encoder

First Rotary Encoder settings:

  • CLK: 5
  • DT: 6
  • SW: 13
  • Coding: Default
  • Detent Action: Control volume
  • Button Action: Toggle play/pause
  • Long press Action: Stop

Conclusion

Don't forget to set the volume once. It still stays on 100%.

After that you should now be able to play your first track from local USB storage (Musikbibliothek), NAS or Spotify - whatever you prefer. Hit the PLAY button.

Some sweets

Let's add some sweets.

SSH

Go to http://musicbox.local/dev/ and enable SSH via one-click button. Enable Live Log if you want to. Log in via SSH with putty/kitty/your preferred SSH client.

Copy content of userconfig.txt to /boot/userconfig.txt. This file is already included out-of-the-box in /boot/config.txt. It will contain persistent tweaks and configurations, like

  • no boot delay
  • enabling SPI (for Display)
  • I2C (DS1307 RTC)
  • disabling power consuming LEDs
  • underclocking

Example of userconfig.txt

Disable force_turbo=0 if something goes weird.

# Add your custom config.txt options to this file,
# which will be preserved during updates
boot_delay=0
dtparam=spi=on # required by: TFT Display
dtoverlay=i2c-rtc,ds1307 # rquired by: RTC clock
#dtoverlay=spi1-1cs

# Disable on-board LEDs to save power of around 30mA
## ACT LED.
dtparam=act_led_trigger=none
dtparam=act_led_activelow=off

# PWR LED.
dtparam=pwr_led_trigger=none
dtparam=pwr_led_activelow=off

# underclock 3B+ / power saving here is actually 
#force_turbo=0 # comment this out if something gets wrong
over_voltage=-2 # reduce cpu voltage by 2*0,25V
arm_freq=1200 # std=1400
arm_freq_min=400 # std=600
core_freq=350 # std=400
core_freq_min=200 # std=250

# dtoverlay=sdtweak,overclock_50=100
# avoid_warnings=2
# initial_turbo=30

Underclocking and power consumption details:

https://www.raspberrypi.org/documentation/configuration/config-txt/overclocking.md

https://magpi.raspberrypi.org/articles/how-to-overclock-raspberry-pi-4

https://www.foxplex.com/sites/raspberry-pi-over-und-underclocking/

https://learn.pi-supply.com/make/how-to-save-power-on-your-raspberry-pi/

Before you install any additional software do an update

DON'T DO THIS !!!

> sudo apt-get update
> apt-get upgrade

dist-upgrade is known to break volumio, especially MPD will be broken. See Troubleshooting section.

RTC

Set a timezone: > ln -sf /usr/share/zoneinfo/Europe/Berlin /etc/localtime

Setup

SPI should be already enabled via /boot/userconfig.txt (dtoverlay=i2c-rtc,ds1307).

Install Python i2c-tools (already installed in Volumio v2.861) and SMBus:

> sudo apt-get install python-smbus i2c-tools

Check if hardware is found by running

> sudo i2cdetect -y 1

to see the UU show up on address 0x68.

Disable the "fake hwclock" which interferes with the 'real' hwclock

> sudo apt-get -y remove fake-hwclock
> sudo update-rc.d -f fake-hwclock remove
> sudo systemctl disable fake-hwclock

Now with the fake-hw clock off, you can start the original 'hardware clock' script.

Run sudo nano /lib/udev/hwclock-set and comment out these three lines:

#if [ -e /run/systemd/system ] ; then
# exit 0
#fi

Also comment out the two lines

/sbin/hwclock --rtc=$dev --systz --badyear
/sbin/hwclock --rtc=$dev --systz

Check time the first time. You can read the time directly from the RTC with sudo hwclock -r. Plug in Ethernet or WiFi to let the Pi sync the right time from the Internet. Once that's done, run sudo hwclock -w to write the time, and another sudo hwclock -r to read the time.

You just have to do the above steps once.

Source:

> https://learn.adafruit.com/adding-a-real-time-clock-to-raspberry-pi/set-rtc-time

USV/UPS

Geekworm X750

(https://raspberrypiwiki.com/X750#User_Manual)

ups-x750-check.service checks and shuts down the Pi if capacity is reaching a critical level

ups-shutdown.service is for the power button

Create folder /home/volumio/log with 755 rights.

Copy x750pwr.sh and ups-x750-check.py to /home/volumio/ups/.

Set rights of sh script:

> sudo chmod +x /home/volumio/ups/x750pwr.sh

Copy ups-shutdown.service and ups-x750-check.service to /lib/systemd/system and run:

> systemctl enable ups-shutdown
> systemctl start ups-shutdown

> systemctl enable ups-x750-check
> systemctl start ups-x750-check

Check both if they are runnging correctly:

> systemctl status ups-shutdown
> systemctl status ups-x750-check

Both should be green.

Bluetooth

Builtin in Volumio. Just enable it in settings.

Display

SPI already enabled in userconfig.txt (dtparam=spi=on).

Edit

> sudo nano /etc/modules

and add

> spi-bcm2835

Install build tools 

> sudo apt-get install --reinstall make
> sudo apt-get install build-essential

Installing necessary python libraries (e.g. Image (Pillow), SPI, RPi.GPIO) 

> sudo apt-get install python-dev python-setuptools python-pip python-rpi.gpio
> sudo apt-get install libjpeg-dev zlib1g-dev libfreetype6-dev # necessary for Pillow
> /usr/bin/pip install pillow==6.2.2 spidev netifaces gpiozero --user

Pillow 6.2.2 is the latest version which supports Python 2.7.x

--------------------------------------------------------------------
PIL SETUP SUMMARY
--------------------------------------------------------------------
version      Pillow 6.2.2
platform     linux2 2.7.9 (default, Sep 26 2018, 05:58:52)
             [GCC 4.9.2]
--------------------------------------------------------------------
--- JPEG support available
*** OPENJPEG (JPEG2000) support not available
--- ZLIB (PNG/ZIP) support available
*** LIBIMAGEQUANT support not available
*** LIBTIFF support not available
--- FREETYPE2 support available
*** LITTLECMS2 support not available
*** WEBP support not available
*** WEBPMUX support not available
--------------------------------------------------------------------
To add a missing option, make sure you have the required
library and headers.
See https://pillow.readthedocs.io/en/latest/installation.html#building-from-source

To check the build, run the selftest.py script.

Clone Volumio plugin from Github 

> git clone https://github.com/one-step-behind/tft24-plugin
> cd tft24-plugin
> volumio plugin install

Copy scripts and run them

  1. Copy the display scripts (fonts, img, lib_tft24T.py, volumio-display.py, volumio-display-startup.py) into /home/volumio/volumio-display.
  2. Copy systemd scripts (volumio-display.service, volumio-display-startup.service) to /lib/systemd/system.
  3. Run:
> systemctl enable volumio-display-startup
> systemctl start volumio-display-startup

> systemctl enable volumio-display
> systemctl start volumio-display

Check both if they are runnging correctly:

> systemctl status volumio-display-startup
> systemctl status volumio-display

Both should be green.

Troubleshooting

GPIO readall errors

gpio readall shows error: Oops - unable to determine board type... model: 13

> gpio -v => 2.44

A: You need to upgrade to WiringPi 2.46 from 2.44:

> cd /tmp
> wget https://unicorn.drogon.net/wiringpi-2.46-1.deb
> sudo dpkg -i wiringpi-2.46-1.deb>

MPD broken, Volumio isn't playing anything. 

> systemctl status mpd -l

Output: /usr/bin/mpd: error while loading shared libraries: libbcm_host.so: cannot open shared object file: No such file or directory Reason: You upgraded the system with apt-get upgrade.

Solution:

Compile libbcm_host.so from the open-sourced code for the ARM side libraries. To do so:

> git clone https://github.com/raspberrypi/userland.git

Install build-essentials and cmake:

> sudo apt-get install build-essential cmake

Build (will take a couple of minutes):

> cd userland/
> ./buildme

Copy the compiled file to /usr/lib:

> sudo cp ./build/lib/libbcm_host.so /usr/lib/libbcm_host.so

You can now restart mpd:

> sudo service mpd restart

and see if all went well:

> service mpd status

Projektstart: 01. August 2018 um 02:00

Letzte Änderung: 24. Oktober 2021 um 02:00