Work in progress.
Dexed is a FM Synth Plugin (https://github.com/asb2m10/dexed) offering a standalone version you can download from their git releases. Executing their pre-compiled binary on my Linux machine I got the following error:
~/Downloads/dexed-0.9.4.lnx % ./Dexed  29833 illegal hardware instruction (core dumped) ./Dexed
Building Dexed from source solved the problem :)
This is a quick guide how to build it your self using docker.
FROM debian:latest RUN apt-get update RUN apt-get install -y git freeglut3-dev g++ libasound2-dev libcurl4-openssl-dev build-essential\ libfreetype6-dev libjack-jackd2-dev libx11-dev libxcomposite-dev \ libxcursor-dev libxinerama-dev libxrandr-dev mesa-common-dev && apt-get clean RUN git clone https …
To use the volume keys on your keyboard on linux or with a raspberry pi in particular, you can use the triggerhappy package, which comes pre-installed with raspbian.
The trigger happy config has to be saved at `/etc/triggerhappy/triggers.d/*.conf. We first specify the key, followed by the corresponding action to take.
KEY_VOLUMEUP 1 /usr/bin/amixer -M set PCM 5%+ KEY_VOLUMEUP 2 /usr/bin/amixer -M set PCM 5%+ KEY_VOLUMEDOWN 1 /usr/bin/amixer -M set PCM 5%- KEY_VOLUMEDOWN 2 /usr/bin/amixer -M set PCM 5%- KEY_MIN_INTERESTING 1 /usr/bin/amixer set PCM 1+ toggle
Some …more ...
If you are having trouble getting a signal on your monitor/TV from a Raspberry Pi no matter the settings in
boot/config.txt it might be because of the experimental GL driver.
No matter the settings in
/boot/config.txt i always got to a signal during boot, but "no signal" when the desktop was supposed to show up, or the monitor detected the wrong resolution (1080p@30Hz).
# uncomment to force a specific HDMI mode (this will force VGA) hdmi_group=1 hdmi_mode=4 # uncomment to force a HDMI mode rather than DVI. This can make audio work in # DMT …
A simple way to backup your entire linux machine is just to create a tar all files
tar -cvzpf backup.tar.gz --directory=/ --exclude=proc --exclude=sys --exclude=dev --exclude=run --exclude=tmp --exclude=boot .
We set the directory to create the archive from to / and include everything in the archive with the
. at the end. Also exclude directories like /dev or /sys, which are machine or OS specific and don't contain any of our files.
In a previous article we used DBUS to send control commands to the spotify client.
To remotely control spotify via the web, i wrote a little HTTP server which takes GET requests and "forwards" them via DBUS to the player. The program is written in python (see below) and takes requests on the following paths:
Next step is an android app to call our little webservice :)
import SimpleHTTPServer import SocketServer import argparse import subprocess parser = argparse.ArgumentParser() parser.add_argument('--port', type=int, default=9000) args = parser.parse_args() class ServerHandler(SimpleHTTPServer.SimpleHTTPRequestHandler): cmd = "/usr/bin/dbus-send --print-reply …