2020-01-22 20:39:58 +00:00
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# bananenkeyboard
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2020-06-29 20:29:26 +00:00
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Resistive touch sensors to sound by touching the probes or things connected to them.
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2022-02-26 14:16:20 +00:00
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# Install
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2020-06-29 20:29:26 +00:00
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2022-02-26 14:16:46 +00:00
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* Raspberry Pi OS Lite
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* Release date: January 28th 2022
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* System: 32-bit
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* Kernel version: 5.10
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* Debian version: 11 (bullseye)
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2022-02-26 14:16:20 +00:00
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Remember to activate "ssh" before booting first (touch "/boot/ssh" on the MicroSD-card)
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After login (ssh) proceed with these steps:
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2020-06-29 21:14:42 +00:00
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1. `sudo apt update`
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2. `sudo apt upgrade`
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2022-10-16 12:27:25 +00:00
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3. `sudo apt -y install git python3-pip libsdl2-mixer-2.0-0 usbmount screen libasound2-dev`
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4. `wget go1.19.2.linux-armv6l.tar.gz`
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5. `rm -rf /usr/local/go && tar -C /usr/local -xzf go1.19.2.linux-amd64.tar.gz`
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2022-10-16 15:27:14 +00:00
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6. `echo 'export PATH=$PATH:/usr/local/go/bin' >>~/.profile`
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7. `git clone https://repos.ctdo.de/interfisch/bananenkeyboard/`
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2022-10-16 15:30:26 +00:00
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8. `cd ~/bananenkeyboard/Pi`
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2022-10-16 15:27:14 +00:00
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9. `go get .`
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10. `go build .`
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11. `sudo sh -c 'echo "\n[all]\nenable_uart=1\n" >>/boot/config.txt'`
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12. `sudo sh -c 'sed "s/^dtoverlay=vc4-kms-v3d/dtoverlay=vc4-fkms-v3d/" -i /boot/config.txt'`
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13. `sudo mkdir /etc/systemd/system/systemd-udevd.service.d`
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14. `sudo sh -c 'echo "[Service]\nPrivateMounts=no" >/etc/systemd/system/systemd-udevd.service.d/00-my-custom-mountflags.conf'`
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15. `sudo sh -c 'cp /home/pi/bananenkeyboard/piconfig/rc.local /etc/rc.local'`
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16. `sudo chmod u+x /etc/rc.local`
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17. `chmod u+x ~/bananenkeyboard/piconfig/readonly.sh`
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18. `sudo gpasswd --add pi tty`
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19. `sudo /home/pi/bananenkeyboard/piconfig/readonly.sh`
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20. `sudo reboot`
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By copying the rc.local (step 15), the script will be started in a `screen` after reboot.
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2022-03-08 19:50:33 +00:00
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To start it manually type:
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2020-06-29 21:12:48 +00:00
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2022-10-16 12:27:25 +00:00
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`./bananakeyboard_go`
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2020-06-29 22:09:08 +00:00
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2022-03-03 09:19:01 +00:00
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# Convert and remove silence from samples:
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2020-06-29 22:09:08 +00:00
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`for file in *.mp3; do ffmpeg -i ${file} -af silenceremove=1:0:-30dB ${file/mp3/wav} -y; done`
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2022-03-03 09:19:01 +00:00
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An open source for samples is for example: https://philharmonia.co.uk/resources/sound-samples/
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2021-10-25 16:21:49 +00:00
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# TODO
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2022-03-03 09:19:01 +00:00
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* Connect USB stick with samples which should override the default samples
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2022-03-09 09:39:48 +00:00
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* `ALSA lib pcm.c:8545:(snd_pcm_recover) underrun occurred`. Especially if using mp3s?
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2022-10-16 12:01:30 +00:00
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* It's necessary to activate the serial via raspi-config?
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* raspi-config -> Interface -> I6 Serial Port -> No (Login Shell?) -> Yes (Serial hardware port?) -> Ok
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