lexoyo/audio-pong

play a sound on your phone, and let the raspberry answer

What is audio pong?

This is a small nodejs server for your raspberry 3.

It serves a sound board to your phone, you click on a tile to play a sound on you phone and another sound will be played on the raspberry, making a fun effect like ping pong, reload and fire, smash and cry...


Install on a raspberry 3

on your raspberry, install these libs for audio and nodejs

sudo apt-get update

# install nodejs
sudo apt-get install -y npm wget
sudo npm install -g n
sudo n latest

# setup audio
sudo apt-get install -y mpg321

then start the server (you can add use these techniques to start the server on startup boot)

$ npm i
$ npm start

then open http://[raspberry IP]:8080 on your phone and enjoy the sound on the 2 devices

tip: you may need to type amixer cset numid=3 1 to force the raspberry to output audio on the "analog" output instead of hdmi

tip: you can use this command to test your audio: speaker-test -t sine -f 440 -c 2 -s 1

add sounds to the board

You will need 2 mp3 sounds, one for ping (played by the phone) and one for pong (played by the raspberry)

• add 2 sounds to the sounds/ folder
• add an entry in audio.json
• change the number of sounds in index.html on this line here

Feel free to contribute your sounds here, only creative commons one please (home made or not) ;)

---

---

Notes on Doccker

$ sudo docker build . lexoyo/audio-pong $ sudo docker run -p 8080:8080 lexoyo/audio-pong

sudo docker run -i -t -p 8080:8080 lexoyo/audio-pong /bin/bash

alsa :

-v /dev/snd:/dev/snd --lxc-conf='lxc.cgroup.devices.allow = c 116:* rwm' -v /dev/shm:/dev/shm
-v /etc/machine-id:/etc/machine-id
-v /run/user/$uid/pulse:/run/user/$uid/pulse
-v /var/lib/dbus:/var/lib/dbus
-v ~/.pulse:/home/$dockerUsername/.pulse \