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raspberry:audio_injector [2020/02/28 00:33]
admin [I2S Pins] 		raspberry:audio_injector [2020/03/05 23:38]
admin [Alsa Mixer Settings]
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 ===== Audio Injector Installation ===== ===== Audio Injector Installation =====
  
-[[http://www.audioinjector.net/rpi-hat|Audio Injector]] is a audio hat for the [[https://www.raspberrypi.org/|Raspberry Pi]]. This sound card comes with two inputs and two outputs, plus a build in microphone.\\+[[http://www.audioinjector.net/rpi-hat|Audio Injector Stereo Soundcard]] and the [[http://www.audioinjector.net/rpi-zero|Raspberry Zero Soundcard]] by [[http://www.audioinjector.net/|Audio Injector]] are audio hats for the [[https://www.raspberrypi.org/|Raspberry Pi]]. These sound cards comes with two inputs and two outputs, plus a build in microphone.\\
  
-==== Installation === +---- 
-This manual is made for an Raspberry Pi 4 running [[https://www.raspberrypi.org/downloads/raspbian/|Raspian Buster]] on it.\\ +==== Installation ==== 
-After connecting the Audio Injector to the Raspberry Pi change some configurations, in:+ 
 +This manual is made for an Raspberry Pi 4 running [[https://www.raspberrypi.org/downloads/raspbian/|Raspian Buster]] on it. It's also tested with a Raspberry Pi Zero running Raspian Buster.\\ 
 + 
 +After connecting the Audio Injector to the Raspberry Pi some software should be installed.\\ 
 +First you have to download the deb package from [[http://forum.audioinjector.net/viewtopic.php?f=5&t=3]]. Unpack it: 
 +   $ tar -xf audio.injector.scripts_0.1-1_all.deb.tar.gz 
 +And install it: 
 +   $ sudo apt install ./audio.injector.scripts_0.1-1_all.deb 
 +Change some configurations, in:
    $ sudo nano /boot/config.txt    $ sudo nano /boot/config.txt
 Comment out: Comment out:
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    $ sudo reboot    $ sudo reboot
  
 +----
 ---- ----
 ==== Alsa Mixer Settings ==== ==== Alsa Mixer Settings ====
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    $ unzip master.zip    $ unzip master.zip
 go into the folder: go into the folder:
-   $ cd stereo-and-zero-master/+   $ cd stereo-and-zero-master/audio.injector.scripts-0.1
 and run: and run:
    $ alsactl --file asound.state.MIC.thru.test restore    $ alsactl --file asound.state.MIC.thru.test restore
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 The following pins are used by the sound card, don't use them for anything else!\\ The following pins are used by the sound card, don't use them for anything else!\\
-Beside the power and ground the I2S bus needs the following pins:+Beside the power (5V and 3V3) and ground (GND) the I2S bus needs the following pins:
    GPIO 18 (Pin12)    BIT CLOCK (BCLK);    GPIO 18 (Pin12)    BIT CLOCK (BCLK);
    GPIO 19 (Pin 35)   IN and OUT LR CLOCK (DACLRC and ADCLRC);    GPIO 19 (Pin 35)   IN and OUT LR CLOCK (DACLRC and ADCLRC);
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 </html> </html>
  
-graphic from: +//graphic from: 
-[[https://hifiduino.wordpress.com/2014/11/13/raspberry-pi-b-digital-audio/]]\\+[[https://hifiduino.wordpress.com/2014/11/13/raspberry-pi-b-digital-audio/]]//\\
  
 ---- ----
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 [[https://github.com/Audio-Injector/stereo-and-zero]]\\ [[https://github.com/Audio-Injector/stereo-and-zero]]\\
 [[https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp/raspberry-pi-usage]]\\ [[https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp/raspberry-pi-usage]]\\
 +[[https://www.richardmudhar.com/blog/2018/07/raspberry-pi-zero-audio-recording-with-the-audioinjector-hat/]]\\
  
 ---- ----