Basic Command

한글

• sudo apt install -y fonts-unfonts-core
• sudo apt install ibus-hangul

Windows와 폴더 공유

• 윈도우와 폴더를 공유하기 위한 samba 설치
• CIFS/Samba 설치

• sudo apt update
  sudo apt install samba samba-common-bin smbclient cifs-utils

• https://www.raspberrypi.org/documentation/remote-access/samba.md

• Turn on sharing
• Share the folder
• Mount the folder on the Raspberry Pi
• Sharing a folder for use by Windows

해상도 & HDMI로 output sound

• /boot/config.txt

  • # For more options and information see
    # http://rpf.io/configtxt
    # Some settings may impact device functionality. See link above for details
    
    # uncomment if you get no picture on HDMI for a default "safe" mode
    #hdmi_safe=1 
    
    # uncomment this if your display has a black border of unused pixels visible
    # and your display can output without overscan
    #disable_overscan=1
    
    # uncomment the following to adjust overscan. Use positive numbers if console
    # goes off screen, and negative if there is too much border
    #overscan_left=16
    #overscan_right=16
    #overscan_top=16
    #overscan_bottom=16
    
    # uncomment to force a console size. By default it will be display's size minus
    # overscan.
    #framebuffer_width=1280 <--- 여기는 정해지면 디폴트로 정의 
    #framebuffer_height=720 <-- 
    
    # uncomment if hdmi display is not detected and composite is being output
    hdmi_force_hotplug=1 <-- 
    
    # uncomment to force a specific HDMI mode (this will force VGA)
    hdmi_group=2 <-- 
    hdmi_mode=70 <--- 여기는 표를 보고 맞춤 안방은 70
    
    # uncomment to force a HDMI mode rather than DVI. This can make audio work in
    # DMT (computer monitor) modes
    hdmi_drive=2 <-- 
    
    # uncomment to increase signal to HDMI, if you have interference, blanking, or
    # no display
    #config_hdmi_boost=4
    
    # uncomment for composite PAL
    #sdtv_mode=2
    
    #uncomment to overclock the arm. 700 MHz is the default.
    #arm_freq=800
    
    # Uncomment some or all of these to enable the optional hardware interfaces
    dtparam=i2c_arm=on
    #dtparam=i2s=on
    dtparam=spi=on
    
    # Uncomment this to enable infrared communication.
    #dtoverlay=gpio-ir,gpio_pin=17
    #dtoverlay=gpio-ir-tx,gpio_pin=18
    
    # Additional overlays and parameters are documented /boot/overlays/README
    
    # Enable audio (loads snd_bcm2835)
    dtparam=audio=on
    
    [pi4]
    # Enable DRM VC4 V3D driver on top of the dispmanx display stack
    dtoverlay=vc4-fkms-v3d
    max_framebuffers=2
    
    [all]
    #dtoverlay=vc4-fkms-v3d
    start_x=1
    gpu_mem=512
    enable_uart=1
    dtoverlay=w1-gpio

wlan setting

• #!/bin/bash
  
  echo
  echo '##### START KKo KKo Rack #####'
  echo
  
  wpa_cli -i wlan0 list_networks 
  
  if [ -z "$1" ]; then
          echo " > No parameter "
          exit 0;
  fi 
  
  SID=$(wpa_cli -i wlan0 list_networks | grep $1 | cut -f 1)
  echo " > Input SID is " $1 ", SID number = " $SID 
  
  echo "Setting Wlan0 ... ..."
  wpa_cli -i wlan0 select_network $SID
  sleep 1
  echo " > DONE  =  " $SID 
  
  echo
  echo '##### STARTed KKo KKo Rack #####'
  echo

• Sound Streaming

  • cvlc -vvv alsa://plughw:2 --sout '#transcode{acodec=mp3,ab=64,channels=1}:standard{access=http,dst=0.0.0.0:8080/out.mp3}'

  • http://web.joang.com:8080/out.mp3

  • https://hobbylad.wordpress.com/2017/04/26/raspberry-pi-system-audio-redirection-over-network/