raspi-volume-control

Currently this is only for personal use.
The amixer command needs to be changed to a more generic version.

To be able to run it on port 80, do the following:

$ sudo apt-get install libcap2-bin
$ sudo setcap cap_net_bind_service=+ep /usr/local/bin/node

Install as system service:

$ git clone https://github.com/dr-erych/raspi-volume-control.git
$ cd raspi-volume-control
$ sudo ln -s ${PWD}/volume-control.service /etc/systemd/system/volume-control.service
$ sudo systemctl enable myapp
$ sudo systemctl start myapp

You can then call the following web routes:
http://<ip-of-your-raspberry-pi>/ --> status
http://<ip-of-your-raspberry-pi>/volume-up
http://<ip-of-your-raspberry-pi>/volume-down
http://<ip-of-your-raspberry-pi>/volume-toggle-mute