A music player for kids controlled by RFID cards and colorful clicky buttons. Streaming music to a Yamaha MusicCast speaker via Bluetooth has never been easier.
- Raspberry Pi Zero W
- RFID Reader Kit RC522
- Arcade Buttons
- Various Jumper Wires & Resistors (10k/1k)
- Perfboard
Find the right image for your Raspberry: https://www.raspberrypi.com/software/operating-systems/ and follow along the headless configuration guide: https://www.raspberrypi.com/documentation/computers/configuration.html#setting-up-a-headless-raspberry-pi
# Change into Downloads folder
cd ~/Downloads
# curl OS Image
curl -OL "https://downloads.raspberrypi.org/raspios_lite_armhf/images/raspios_lite_armhf-2022-09-26/2022-09-22-raspios-bullseye-armhf-lite.img.xz"
# find the right disk (mine: /dev/disk4)
diskutil list
# unmount all volumes (mine: /dev/disk4)
diskutil umountDisk /dev/disk4
# this step requires xz package (see: brew)
# /dev/disk4 => /dev/rdisk4 faster imaging
xzcat "2022-09-22-raspios-bullseye-armhf-lite.img.xz" | dd of=/dev/rdisk4 bs=32M status=progress
# let's prepare our boot disk
cd /Volumes/boot
# Configure Networking
nano wpa_supplicant.conf
# Configure a User (generate PW with: openssl passwd -6)
nano userconf.txt
# Enable SSH Daemon
touch ssh
# unmount all volumes (mine: /dev/disk4)
diskutil umountDisk /dev/disk4# Allow SSH Key for pi & root user
mkdir -p ~/.ssh/
echo "${SSH_KEY}" >> ~/.ssh/authorized_keys
# Test password-less connection with pi/root user
ssh -l pi <host>
ssh -l root <host>
# Filesystem should have been expanded automatically
# let's check with
df -h
# system updates
apt update && apt full-upgrade
# set hostname
hostnamectl set-hostname zero-music
sed -i 's/raspberrypi/zero-music/g' /etc/hosts
# Enable lingering for pi user
loginctl enable-linger pi
# Optional: fix your locales
sed -i 's/en_GB.UTF-8 UTF-8/# en_GB.UTF-8 UTF-8/g' /etc/locale.gen
sed -i 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/g' /etc/locale.gen
locale-gen
# Optional: aliases
alias ll="ls -alh"
# Reboot
reboot- git
- mosquitto
- mosquitto-clients
- mpc
- mpd
- pulseaudio
- pulseaudio-module-bluetooth
- pulseaudio-utils
- python3-dbus
- python3-rpi.gpio
- python3-spidev
- python3-venv
- tree
https://forum-raspberrypi.de/forum/thread/50427-mpd-mit-pulseaudio-und-bluetooth-raspi-os-lite/
pulseaudio -k
pulseaudio --start- https://www.musicpd.org
- https://mpd.readthedocs.io/en/stable/user.html
- https://www.musicpd.org/doc/mpc/html/
# whatch for all MQTT changes
mosquitto_sub -v -t "#"git clone https://github.com/jalmeroth/zero-music.git# Change into zero-music folder
cd ~/zero-music
# give Python access to python3-dbus and others
python3 -m venv --system-site-packages .venv
# activate virtual environment
source ./.venv/bin/activate
# upgrade pip
pip install -U pip
# let's check for Python System Packages
pip list # dbus-python, RPu.GPIO, spidevraspi-config
# 3. Interface Options
# I4 SPI EnableConnects to your Yamaha MusicCast device and watches for status updates.
usage: musiccast.py [-h] [-d] [--mqtt-host MQTT_HOST] [--device-id DEVICE_ID] [--mac-addr MAC_ADDR] host
positional arguments:
host Yamaha MusicCast Host
optional arguments:
-h, --help show this help message and exit
-d Enable Debugging
--mqtt-host MQTT_HOST
MQTT Host
--device-id DEVICE_ID
Device ID
--mac-addr MAC_ADDR Device MAC Addressusage: controller.py [-h] [-d] [--mqtt-host MQTT_HOST] [--device-id DEVICE_ID] [--mac-addr MAC_ADDR] [--startup STARTUP] [--shutdown SHUTDOWN] [--play PLAY]
optional arguments:
-h, --help show this help message and exit
-d Enable Debugging
--mqtt-host MQTT_HOST
MQTT Host
--device-id DEVICE_ID
Device ID
--mac-addr MAC_ADDR Device MAC Address
--startup STARTUP Startup script
--shutdown SHUTDOWN Shutdown script
--play PLAY Play music scriptusage: dbus_watcher.py [-h] [-d] [--mqtt-host MQTT_HOST] [--device-id DEVICE_ID] [--mac-addr MAC_ADDR]
optional arguments:
-h, --help show this help message and exit
-d Enable Debugging
--mqtt-host MQTT_HOST
MQTT Host
--device-id DEVICE_ID
Device ID
--mac-addr MAC_ADDR Device MAC Addressbusctl tree org.bluez
busctl introspect org.bluez /org/bluez/hci0
busctl introspect org.bluez /org/bluez/hci0/dev_XX_XX_YY_YY_ZZ_ZZ
dbus-monitor --system "type='signal',sender='org.bluez',path='/org/bluez/hci0/dev_XX_XX_YY_YY_ZZ_ZZ'"- https://dbus.freedesktop.org/doc/dbus-specification.html
- https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/doc/device-api.txt
- https://github.com/RadiusNetworks/bluez/blob/master/doc/device-api.txt
- https://gitlab.freedesktop.org/dbus/dbus-python
- https://ukbaz.github.io/howto/python_gio_1.html
- https://stackoverflow.com/q/945007
usage: buttons.py [-h] [-d] [--mqtt-host MQTT_HOST] [--device-id DEVICE_ID] [--mac-addr MAC_ADDR]
optional arguments:
-h, --help show this help message and exit
-d Enable Debugging
--mqtt-host MQTT_HOST
MQTT Host
--device-id DEVICE_ID
Device ID
--mac-addr MAC_ADDR Device MAC Addressusage: tag_reader.py [-h] [-d] [--mqtt-host MQTT_HOST] [--device-id DEVICE_ID] [--mac-addr MAC_ADDR]
optional arguments:
-h, --help show this help message and exit
-d Enable Debugging
--mqtt-host MQTT_HOST
MQTT Host
--device-id DEVICE_ID
Device ID
--mac-addr MAC_ADDR Device MAC AddressRemember to enable SPI via raspi-config.
cd ~/zero-music/systemd
systemctl --user link $PWD/zero_*
systemctl --user status zero_music.service
systemctl --user enable --now $PWD/zero_*