└── BluetoothSpeaker.md


/BluetoothSpeaker.md:
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  1 | ### RaspberryPi 3B Bluetooth Speaker
  2 | 
  3 | #### Required
  4 |   * RaspberryPi Model 3B
  5 |   * headset(Speaker)
  6 | 
  7 | #### Install Dependency Packages
  8 |   
  9 |   Prepare your RaspberryPi, with RASPBIAN JESSIE LITE(or RASPBIAN JESSIE). 
 10 |   
 11 |   Assume you are login as root.
 12 |   
 13 |   Install the dependency packages:
 14 |   	
 15 |     apt-get update
 16 |     apt-get install bluez pulseaudio-module-bluetooth python-gobject python-gobject-2
 17 | #### Check And Pair Bluetooth
 18 |   check cmds:
 19 |   
 20 |     bluetoothctl:
 21 |       scan on
 22 |       trust xx:xx:xx:xx:xx:xx(your phone bluetooth mac)
 23 |       connect xx:xx:xx:xx:xx:xx(use pi connect phone first, next time you can connect phone with pi on your phone)
 24 |   if connected, completed checking of bluetooth
 25 | #### Config Bluetooth
 26 |   we'll config Bluetooth, to enable Bluetooth Audio
 27 |   cmds:
 28 |   
 29 |     vim /etc/bluetooth/main.conf
 30 |     
 31 |   Add the following line in the [General] section:
 32 |   
 33 |       Enable=Source,Sink,Media
 34 |   Set Bluetooth Class, Modify the following line to:
 35 |       
 36 |       Class = 0x00041C
 37 |       
 38 |   41C means your bluetooth contains audio functions
 39 | #### Config Raspberry Pi Audio
 40 |   
 41 | 
 42 | 	  vim /etc/pulse/daemon.conf
 43 | 
 44 |   
 45 |   Add the following line after the commented example ";resample-method = speex-float-3":
 46 |   
 47 |   	resample-method = trivial
 48 |   
 49 |   start pulseaudio service with:
 50 |     
 51 |     pulseaudio -D
 52 |   lately, you can add this command to the rc.local script to enable Audio on start.
 53 |   load modules with:
 54 |     
 55 |     pactl load-module module-bluetooth-discover
 56 |   plugin your headset on raspberyPi
 57 |   test it with:
 58 |     
 59 |     apt-get install omxplayer
 60 |     omxplayer example.mp3
 61 |   now you should have heard the sound from the headset
 62 |   ctrl+C, when tests end
 63 | #### Connect Bluetooth with Audio
 64 |   now restart your bluetooth service:
 65 |     service bluetooth restart
 66 |     
 67 |     bluetoothctl:
 68 |       power on
 69 |       connect xx:xx:xx:xx:xx:xx
 70 |   now, you should have see your bluetooth sources with:
 71 |     
 72 |     pactl list sources short
 73 |   some texts like:
 74 |   
 75 |   	0    alsa_output.platform-bcm2835_AUD0.0.analog-stereo.monitor    module-alsa-card.c    s16le 2ch 44100Hz    SUSPENDED
 76 |   
 77 |   	1    bluez_source.XX_XX_XX_XX_XX_XX    module-bluetooth-device.c    s16le 2ch 44100Hz    SUSPENDED
 78 |   then show the sinks:
 79 |     
 80 |     pactl list sinks short
 81 |   	
 82 |   	0    alsa_output.platform-bcm2835_AUD0.0.analog-stereo    module-alsa-card.c    s16le 2ch 44100Hz    SUSPENDED
 83 |   remember the alsa_output.xxxxxxx, for later uses
 84 |   Connect the source to the sink:
 85 |     
 86 |     pactl load-module module-loopback source=bluez_source.XX_XX_XX_XX_XX_XX sink=alsa_output.xxxxxxx
 87 |   config raspberryPi use headset output Interface:
 88 |     
 89 |     raspi-config:
 90 |       Advanced Options
 91 |       	Audio
 92 |       	  Force 3.5mm ('headphone') jack
 93 |   now apply the volume settings:
 94 |     amixer set Master 100%
 95 |     pacmd set-sink-volume 0 65537
 96 |   play some music from phone, raspberryPi should have redirected the sound to your headset.Just like you have plugin headset directly in the phone
 97 | 
 98 | 
 99 | #### End
100 |   The key section is the "Config Raspberry Pi Audio" and "Connect Bluetooth with Audio"
101 |   When first test, you could start pulseaudio without -D, so you can see any error logs directly
102 | 


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