An EBU R128 loudness meter display for Behringer X32 audio mixing console
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README.md
example.jpg
r128meter.sh

README.md

x32loudness

An realtime EBU R128 loudness meter display for Behringer X32 audio mixing console (and other USB audio devices)

System requierements:

  • Raspberry Pi 3
  • Raspbian Jessie

Options:

  • Raspberry LCD Touchscreen & Case
  • Footswitch or other GPIO-Buttons

Settings:

/boot/config.txt:

dtparam=audio=on
enable_uart=0

#LCD Touchscreen display configuration
lcd_rotate=2
disable_touchscreen=1

#Disable useless wireless stuff
dtoverlay=pi3-disable-wifi
dtoverlay=pi3-disable-bt

#GPIO3 Shutdown/Reboot Button
dtoverlay=gpio-shutdown

#GPIO4 Quit/Reset Metering Button/Footswitch
dtoverlay=gpio-key,gpio=4,keycode=16,label="KEY_Q",gpio_pull=up

#GPIO17 Toogle screen Button/Footswitch
dtoverlay=gpio-key,gpio=17,keycode=17,label="KEY_W",gpio_pull=up

#GPIO25 Pause/Still/Freeze Button/Footswitch
dtoverlay=gpio-key,gpio=25,keycode=25,label="KEY_P",gpio_pull=up

/etc/apt/sources.list:

deb ftp://ftp.deb-multimedia.org jessie main

Prepare:

sudo systemctl disable dphys-swapfile
sudo systemctl disable hciuart.service