DJ Pi

A simple Python script that uses scapy to listen for Amazon Dash button activation and then triggers playing a random MP3 file from a configured directory. This music plays, by default, to the miniplug audio output of the Raspberry Pi.

I used https://www.raspberrypi.org/magpi/hack-amazon-dash-button-raspberry-pi/ as a starting point.

Install

Setup Amazon Dash button to be used as IoT device on your WiFi network. (See https://www.raspberrypi.org/magpi/hack-amazon-dash-button-raspberry-pi/ for more info.)
Install scapy Python library: sudo apt-get install python-scapy
Modify script to point to the correct directory for audio files and the Dash button MAC address
Execute script as root: sudo ./dj-pi.py
You can copy the SysV start-up script to /etc/init.d/ and then symlink it into /etc/rc3.d/ to ensure that the script starts up upon boot

Bluetooth

These notes explain what I attempted to do in order to get Bluetooth working with the Pi. This turned out being difficult to do ... at least with an Amazon Echo. PulseAudio didn't always work and the Bluetooth pairing was flaky. In the end, I gave up on this given the amount of time it was taking

sudo apt install pavucontrol -y
sudo reboot
sudo apt-get install mpg123

Need to first pair with Bluetooth speaker:

bluetoothctl
power on
agent on
discover on
pair XX:XX:XX:XX:XX
trust XX:XX:XX:XX:XX
connect XX:XX:XX:XX:XX

Start up sound to play the MP3 file (didn't always work):

pulseaudio --start
echo -e 'connect 44:65:0D:FB:E5:38\nquit' | sudo bluetoothctl
pacmd set-default-sink 1
mpg123 example.mp3

butikofer/dj-pi

DJ Pi

Install

Bluetooth