#Vintage Radio Control ##Martin O'Hanlon (martin@ohanlonweb.com) ##http://www.stuffaboutcode.com

##Description A control program for a Raspberry Pi and Volumio powered Vintage Radio

For more information see www.stuffaboutcode.com/p/raspberry-pi-volumio-vintage-radio

##Structure

• init.d

  • runRadioControl - init.d script to run the radio control application
  • runRadioControl.add - script which will copy init.d script to /etc/init.d and add it to startup
  • runRadioControl.remove - script to remove the application

• poccode - proof of concept code I used to understand how stuff worked

• scripts - some random scripts

  • unmuteiqamp.sh - a script to unmute the IQAudio Amp+
  • muteiqamp.sh - a script to mute the IQAudio Amp+
  • radiocontrol.sh - a script to start the radio control app and shutdown the pi when it exits

• sourcecode - source code for the radio control

  • radiocontrol.py - main program
  • analogueswitch.py - class for managing an 'analogue switch'
  • event.py - class to hold a events
  • KY040.py - class for reading a KY0404 rotary encoder module
  • MCP3008.py - class for reading data from an MCP3008 analogue to digital converter
  • mpdkeepalive.py - class which constantly pings the MPD server to keep the connection alive
  • onoffswitch.py - class used to raise events from the the on/off switch
  • playlistselector.py - class used to raise events from the playlist selector
  • skiptrackpause.py - class used to raise events form the rotary encoder
  • volumecontrol.py - class used to raise events from the volume control

• docs - various documents created through the build

##Install

This assumes you are installing it on a volumio image and using an IQAudio DAC+ / AMP+

###Enable DAC

sudo nano /boot/config.txt

add:

dtoverlay=iqaudio-dacplus

###Enable SPI

sudo nano /boot/config.txt

add:

dtparam=spi=on

Reboot and check its running:

lsmod | grep spi_

###Set as mono The lady has only got a single speaker, so I set the alsa output to mono

sudo nano /etc/asound.conf

add:

pcm.!default makemono

pcm.makemono {
    type route
    slave.pcm "hw:0"
    ttable {
        0.0 1    # in-channel 0, out-channel 0, 100% volume
        1.0 1    # in-channel 1, out-channel 0, 100% volume
    }
}

###Install python modules

####Update

sudo apt-get update

####Setuptools

cd ~
wget https://bootstrap.pypa.io/ez_setup.py -O - | sudo python

####python-mpd2

cd ~
git clone git://github.com/Mic92/python-mpd2.git
cd python-mpd2
sudo python setup.py install

####rPi.GPIO

cd ~
wget http://sourceforge.net/projects/raspberry-gpio-python/files/raspbian-wheezy/python-rpi.gpio_0.5.11-1_armhf.deb/download
mv download python-rpi.gpio_0.5.11-1_armhf.deb
sudo dpkg -i python-rpi.gpio_0.5.11-1_armhf.deb

####py-spidev

cd ~
sudo apt-get install python2.7-dev
sudo apt-get install gcc
mkdir py-spidev
cd py-spidev
wget https://github.com/Gadgetoid/py-spidev/archive/master.zip
unzip master.zip
rm master.zip
cd py-spidev-master
sudo python setup.py install

##Download software and Run

cd ~
git clone https://github.com/martinohanlon/PiLadyAnneRadio
sudo python ~/PiLadyAnneRadio/sourcecode/radiocontrol.py

##Version history

• 0.1 - Initial stable version
• 0.2 - bug fixes
• 0.3 - minor improvement to KY040 & added documentation
• 0.4 - additional error checking and MPD connection keep alive changes
• 0.5 - thread safe issues with mpd keep alive, so changed to use the event Q
• 0.6 - new linear potentiometer
• 0.7 - minor bug fix
• 0.8 - made volume the right way round
• 0.9 - fixed paths in scripts