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Resistive touch sensors to sound by touching the probes or things connected to them.
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README.md

bananenkeyboard

Resistive touch sensors to sound by touching the probes or things connected to them.

Install

  • Raspberry Pi OS Lite
  • Release date: January 28th 2022
  • System: 32-bit
  • Kernel version: 5.10
  • Debian version: 11 (bullseye)

Remember to activate "ssh" before booting first (touch "/boot/ssh" on the MicroSD-card)

After login (ssh) proceed with these steps:

  1. sudo apt update
  2. sudo apt upgrade
  3. sudo apt -y install git python3-pip libsdl2-mixer-2.0-0 usbmount screen
  4. git clone https://repos.ctdo.de/interfisch/bananenkeyboard/
  5. pip3 install pyserial pygame
  6. sudo sh -c 'echo "\n[all]\nenable_uart=1\n" >>/boot/config.txt'
  7. sudo mkdir /etc/systemd/system/systemd-udevd.service.d
  8. sudo sh -c 'echo "[Service]\nPrivateMounts=no" >/etc/systemd/system/systemd-udevd.service.d/00-my-custom-mountflags.conf'
  9. chmod u+x ~/bananenkeyboard/Pi/s.py
  10. sudo sh -c 'cp /home/pi/bananenkeyboard/piconfig/rc.local /etc/rc.local'
  11. sudo chmod u+x /etc/rc.local

Starten mit

cd ~/bananenkeyboard/Pi

python3 ./s.py

Das Skript wird durch den Schritt mit der /etc/rc.local automatisch nach Systemstart gestartet

Konvertieren und Stille herauskürzen aus Samples:

for file in *.mp3; do ffmpeg -i ${file} -af silenceremove=1:0:-30dB ${file/mp3/wav} -y; done

Als Quelle haben wir zB https://philharmonia.co.uk/resources/sound-samples/

TODO

  • USB-Stick mit Samples anschließen, welche dann den "Standard" überschreiben
  • Pi auf Readonly umbauen, damit ein Abschalten über ein "Stecker raus" funktioniert