Alain's Projects: Dezember 2012

I'll start to build a Internet Radio with a Raspberry with Archlinux.
It should be "my lovely wife" compatible

- turn the power on
- Raspberry boots, loads prefered Radio station an starts playing.
- with pc or mobile, you can play localy stored mp3's.
- if something goes wrong, turn it off and on.

A video says more than words:

The Parts:

a Raspberry
a Wifi Stick Dlink DW131
a pair of Speakers
an usb Stick 16Gb
an defect replique Radio made of Wood.

Schematics:

The Raspberry:

I installed archlinux on it.
connect the Dlink wifi stick, it's suported out of the box.
update Pacman
#pacman -Sy

install netcfg
#pacman -S netcfg

Create the wireless start script

# nano /etc/network.d/wireless

CONNECTION='wireless'
DESCRIPTION='wireless'
INTERFACE='wlan0'
SECURITY='wpa'
ESSID=myrouter

KEY=xxxxxxxxxxx
IP='static' # Any other CONNECTION='ethernet' options may be used.
ADDR='10.168.10.8'
GATEWAY='10.168.10.1'
DNS=('10.168.10.1')
WPA_DRIVER=wext

Set netcfg to use your config

# nano /etc/conf.d/netcfg

# Enable these netcfg profiles at boot time.
#   - prefix an entry with a '@' to background its startup
#   - set to 'last' to restore the profiles running at the last shutdown
#   - set to 'menu' to present a menu (requires the dialog package)
# Network profiles are found in /etc/network.d
NETWORKS=wireless
# Specify the name of your wired interface for net-auto-wired
WIRED_INTERFACE="eth0"

# Specify the name of your wireless interface for net-auto-wireless
WIRELESS_INTERFACE="wlan0"

# Array of profiles that may be started by net-auto-wireless.
# When not specified, all wireless profiles are considered.
# AUTO_PROFILES=(" ")

Start on boot

# systemctl enable netcfg.service
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I use an external USB stick to play the mp3 localy.
To mount I changed the fstab.

# nano /etc/fstab
/dev/sda1       /mnt/media      vfat    defaults        0       0

Create the following directories:
mkdir /mnt/media
mkdir /mnt/media/.mpd/
mkdir /mnt/media/.mpd/playlists
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Install mpd and mpc with Pacman.

My /etc/mpd.conf
music_directory    "/mnt/media"
playlist_directory "/mnt/media/.mpd/playlists"
db_file            "/mnt/media/.mpd/database"
log_file           "/mnt/media/.mpd/log"
pid_file           "/mnt/media/.mpd/pid"
state_file         "/mnt/media/.mpd/state"
auto_update "yes"

bind_to_address    "10.168.10.8"
port                  "6600"
audio_output {
       type            "alsa"
       name            "My ALSA Device"
       device          "hw:0,0"        # optional
#       format          "44100:16:2"    # optional
#       mixer_device    "default"       # optional
#       mixer_control   "PCM"           # optional
#       mixer_index     "0"             # optional
}
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Create a mpc batch file to start my wife's prefered radio station

# nano /usr/bin/startmpc

#!/bin/sh

c=$(pgrep mpd)
while [[ -z $c ]]; do
c=$(pgrep mpd)
done

mpc -h 10.168.10.8 -p 6600 clear
mpc -h 10.168.10.8 -p 6600 volume 100
mpc -h 10.168.10.8 -p 6600 load Chantefrance.m3u
mpc -h 10.168.10.8 -p 6600 play

# chmod 755 /usr/bin/startmpc

# nano /usr/lib/systemd/system/zmpd.service
(i put z in front to start this script after mpd.sevice)

[Unit]
Description=mpc

[Service]
ExecStart=/usr/bin/startmpc

[Install]
WantedBy=multi-user.target

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Start on boot
systemctl enable mpd.service
systemctl enable zmpd.service
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The Audio Amplifier:

I bought a pair of Herkules Speakers and took them appart