A simple, light weight audio receiver with Bluetooth (A2DP), AirPlay, Spotify Connect and UPnP.

Devices like phones, tablets and computers can play audio via this receiver.

• Raspberry Pi with Bluetooth support (tested wth Raspberry Pi 3 and Zero W) or USB dongle
• Raspbian Stretch Lite (tested with November 2018 version)
• USB or I2S Audio adapter (tested with Adafruit USB Audio Adapter, pHAT DAC, and HifiBerry DAC+)

Sets hostname to airpi, the visible device name to AirPi and updates the Raspbian packages.

sudo apt update -y
sudo apt upgrade -y

sudo apt install -y --no-install-recommends git
git clone https://github.com/nicokaiser/rpi-audio-receiver.git
cd rpi-audio-receiver

sudo raspi-config nonint do_hostname airpi
sudo hostnamectl set-hostname --pretty "AirPi"

Sets up Bluetooth, adds a simple agent that accepts every connection, and enables audio playback through BlueALSA. A udev script is installed that disables discoverability while connected.

sudo ./install-bluetooth.sh

Installs Shairport Sync AirPlay Audio Receiver.

sudo ./install-shairport.sh

Installs Spotifyd, an open source Spotify client).

sudo ./install-spotify.sh

Installs gmrender-resurrect UPnP Renderer.

sudo ./install-upnp.sh

To avoid SD card corruption when powering off, you can boot Raspbian in read-only mode. This is described by Adafruit in this tutorial and cannot be undone.

sudo ./enable-read-only.sh

• Only one Bluetooth device can be connected at a time, otherwise interruptions may occur.
• The device is always open, new clients can connect at any time without authentication.
• To permanently save paired devices, the Raspberry has to be switched to read-write mode (mount -o remount,rw /) until all devices have been paired once.
• You might want to use a Bluetooth USB dongle or have the script disable Wi-Fi while connected (see bluetooth-udev.sh), as the BCM43438 (Raspberry Pi 3, Zero W) has severe problems with both switched on, see raspberrypi/linux/#1402.

• BlueALSA: Bluetooth Audio ALSA Backend
• Shairport Sync: AirPlay Audio Receiver
• Spotifyd: open source Spotify client
• gmrender-resurrect: Headless UPnP Renderer
• pivumeter: ALSA plugin for displaying VU meters on various Raspberry Pi add-ons
• Adafruit: Read-Only Raspberry Pi