XR18RecRaspi4

Headless multitrack audio recording for Behringer XR18 on Raspberry Pi 4.

This is a fork from capPiture. Please consider using the original project capPiture. Mainly changes are:

• Use of gpiodetect, gpioget, gpioset instead of echo in
• Use of a usb drive instead of the sd card for storing the recordings
• Use ssh (not necesary, but useful)

Installation

First install Raspberry Pi OS Lite on Raspberry 4 with the Raspberry Pi Imager with the following settings(See this instructions for more details: https://www.raspberrypi.com/software/operating-systems):

• Set locale
• Akcivate ssh
• Set hostname (e.g. to xr18rec)

Then copy the bin folder to /home/pi of the raspberry pi sd card

Then start the Raspberry Pi with this card and:

• Connect to the raspberry pi via ssh
• Run these commands :

sudo apt update
sudo apt ugrade
sudo apt install --no-install-recommends jackd2 jack-capture dbus-x11
echo "startcapiture" >> /home/pi/.profile
sudo mkdir /mnt/usb
sudo chown pi:pi /mnt/usb

Run sudo raspi-config and enable auto login

Restart the raspberry pi

GPIO

• Connect GPIO26 to the + leg of an LED with a 330 Ohm resistor in between, other leg to gnd
• Attach buttons to GPI19 and GPI13. GPI19 starts and stops recording, GPI13 deletes the last recording. GPI19 + GPI13 powers off the Rpi.
• LED light codes:
  • Off: no connection to XR18
  • blinking (0.5 seconds intervall) + 2 seconds off: no connection to USB stick
  • On: recording can start
  • blinking (1 second intervall): recording is in progress

TODO:

• improve usb drive detection (now only works for sda1 dev).