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Turning your Raspberry Pi system into a Bluetooth audio receiver

with the "latest" versions of pulseaudio 12.2 and bluez/bluetoothd 5.50 in Nov 2020 in Raspbian repos

guide updated on Nov 23, 2020

There are tons of guides online that show you how to use your Raspberry Pi as a Bluetooth audio receiver. Unfortunately, at time of writing, none of them seem to work, and contain unnecessary (unexplained) steps or settings that don't really add anything useful.

If you haven't followed any guides yet, skip to the TRUTHS part. If you have, the LIES part may clarify some things for you.

LIES

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From ec683a95700d922d0f574abaefaaf5773c4d8425 Mon Sep 17 00:00:00 2001
From: Tobias Sytsma <tobias@tobiass.nl>
Date: Sat, 6 Mar 2021 09:59:09 +0100
Subject: [PATCH] Fix recovery data finding for Ryan-Myers/NKit

---
 NKit/Settings/RecoveryData.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/NKit/Settings/RecoveryData.cs b/NKit/Settings/RecoveryData.cs

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From 8dbd31f10fdab5aee76ee81171da3855d5f0bfaa Mon Sep 17 00:00:00 2001
From: Tobias Sytsma <tobias@tobiass.nl>
Date: Sat, 6 Mar 2021 10:07:43 +0100
Subject: [PATCH] Remove Windows apps from the solution

---
 NKit.sln | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/NKit.sln b/NKit.sln

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#!/bin/bash

# Requirements:
# - ffmpeg
# - xdotool

MAX_W=720

read -p "Press a key to select top left corner of region"
topleft_x=$(xdotool getmouselocation | awk '{print $1}' | cut -d':' -f 2)

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"""
DRF circular serializer import helper
"""

from rest_framework.serializers import ModelSerializer
from rest_framework.fields import Field

# Add more serializers here
RequestSerializer: ModelSerializer = None
OrderSerializer: ModelSerializer = None

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def connect(self):
    class dummy_request:
        COOKIES = {}
        META = {'HTTP_ACCEPT_LANGUAGE': dict(self.scope['headers']).get('accept-language'.encode('utf-8'), bytes()).decode('utf-8')}

    translation.activate(translation.get_language_from_request(dummy_request))

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#!/bin/bash

# this script sets up a mint raspbian installation as follows:
# - all packages updated
# - my public ssh key is authorized
# - onboard bluetooth disabled
# - onboard analog audio disabled
# - PCM5102a DAC as audio output
# - network audio relay through pulseaudio with zeroconf support
# - bluetooth audio relay through pulseaudio

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#!/bin/bash

r=255
g=255
b=255

function apply () {
    echo -n "Enter brightness [0, 1]: "
    read brightness
    while read display; do

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/// store.ts
import { InjectionKey } from 'vue'
import { createStore, mapState as baseMapState, Store, useStore as baseUseStore } from 'vuex'

const modules = {
    appDataModule,
}

const state = {
    settings: <Settings | null>null,

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#!/bin/bash

# use @Ryan-Myers .NET Core 3.1 version of the project
git clone https://github.com/Ryan-Myers/NKit.git
# patch for fixing the recovery data finding issue
wget -O - https://gist.githubusercontent.com/Tobiaqs/b7c25136a713fe68de47f4ad76376c89/raw/fd33482226818fd99b84a0f2302895a898c2aab4/0001-Fix-recovery-data-finding-for-Ryan-Myers-NKit.patch 2>/dev/null | git -C NKit apply
# patch to remove windows apps from the solution
wget -O - https://gist.githubusercontent.com/Tobiaqs/d25daf70ac7455dc7c3cf01071002c03/raw/8d983568f5137ab39d4cab759f8ea519e8bcd33c/0002-Remove-Windows-apps-from-the-solution.patch 2>/dev/null | git -C NKit apply
# build using dotnet sdk 3.1 docker image
docker run --rm -v $PWD/NKit:/NKit -it mcr.microsoft.com/dotnet/sdk:3.1 bash -c 'cd /NKit; dotnet build'