mo∏lette 3000

SCHNÌTZELBÀNK 3000 s'mopilettla

Présentée en première mondiale du 17 au 21 décembre 805 sur p-node.org.

Yet another TT-box variation, this time based on darkice and network-manager!

Principle

• a Raspberry Pi > 3B (for embedded wifi) or equivalent (tested on a Rpi 3B+ running raspbian stretch) with :
  • setup the WiFi networks you wanna use (4G router, phone, box...)
  • plug a zoom/audio interface to your raspi via USB
  • power it via a powerbank: you're on air!
  • access to an icecast mountpoint
  • unplug the zoom to stop streaming, plug it back to reconnect

Step-by-step setup

Log in to the raspi via SSH.

install darkice and NetworkManager :
sudo apt install darkice NetworkManager

create the darkice configuration file:
nano /home/pi/darkice.cfg

[general]
duration = 0 # duration of encoding, in seconds.
bufferSecs = 2 # size of internal slip buffer, in seconds
reconnect = yes # reconnect to the server(s) if disconnected

[input]
device = hw:1,0
sampleRate = 44100 # sample rate in Hz. try 11025, 22050 or 44100
bitsPerSample = 16 # bits per sample. try 16
channel = 2     # channels. 1 = mono, 2 = stereo

[icecast2-0]
bitrateMode = cbr # constant bit rate
format = mp3 # format of the stream
bitrate = 1 # bitrate of the stream sent to the server
server = stream.p-node.org # host name of the server
port = 8002 # port of the IceCast2 server, usually 8000
password = [hackme] # source password to the IceCast2 server
mountPoint = micro-ondes.org # mount point of this stream on the IceCast2 server
name = Schnitzelbank s'mopilette # name of the stream
description = Adada
genre = Live

[file-0]
format = mp3
bitrate = 192 # bitrate of the stream sent to the server
bitrateMode = cbr # constant bit rate
fileName = /home/pi/rec/Schnitzelbank_.mp3
fileAddDate = yes
fileDateFormat = %Y%m%d-%Hh%Mm%Ss

create its systemd unit for launch at bootup:
nano /home/pi/mopilette-stream.service

[Unit]
Description=mopilette streaming
After=multi-user.target
Wants=network-online.target sound.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/usr/bin/darkice -c /home/pi/darkice.cfg
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

enable it:

sudo systemctl enable /home/pi/mopilette-stream.service
sudo systemctl start mopilette-stream

(optional) download and compile PiFmRds:

sudo apt install git libsndfile1-dev
git clone https://github.com/ChristopheJacquet/PiFmRds.git
cd PiFmRds/src
make clean
make

setup the network:

sudo raspi-config

-> Localisation Options
-> WLAN Country

sudo systemctl disable dhcpcd
sudo systemctl stop dhcpcd
nmtui

-> Activate a connection

Reboot! You'll be on air after less than 30s.

more pics

and some audios