Unstet

Outline

                                                    +------------+
                                                   /|  client 1  |
                                                  / +------------+
+------------------+         +-----------------+ /
|                  |         |                 |/   +------------+
|    algorithm     | ------->|     daemon      |----|  client 2  |
|                  |         |                 |\   +------------+
+------------------+         +-----------------+ \       ...
                                                  \ +------------+
                                                   \|  client n  |
                                                    +------------+

Algorithm

the Unstet algorithm is a javascript reimplementation of the un-stet algorithm (,written in max/msp by Markus Buser). The algorithm just creates events or bangs, it knows nothing about representation on the screen. The bangs are sent as OSC-messages to osc://localhost:9000.

Puredata/Max Integration

for details see https://github.com/basilstotz/unstet/tree/main/algorithm/integrations/puredata

Presenter

Daemon

• The daemon listens for http-connections at http://daemon-host:3000 (daemon-host is the machine the daemon runs on) .
• The demon listens for OSC-messages at osc://localhost:9000 . On reception of an event it radomly chooses one of the connected clients and the choosen client will randomly select a video to display.

Clients

The clients are just any number web-browsers(-tabs) displaying http://daemon-host:3000 . The clients can be dynamically added or removed at any time.

It works on any device/operatingsystem capable running chromium (namely Android-TV, Google-TV ...) and here is no unstet specific installation on the client.

You also might want to setup things like autologin and autostart for the webbrowser (in fullscreen mode and the correct url).

Usage

Installation

The algorithm and the daemon can be installed on any device/operationgsystem capable running nodejs (namely Android, Linux, Windows, macOS).

First nstall the dpendencies: nodejs, npm (optional), git (optional)

Hint: macOS: install homebrew and then do brew install nodejs npm git | Android: install dorynode (easy) or termux (complete) | Debian: dosudo apt install nodejs npm git.

Then install unstet (Note: All following snippets can be used unaltered on macOS, Android and Linux!)

git clone https://github.com/basilstotz/unstet

Run

Go to the newly installed unstet folder and start unstet-algo with

cd unstet
node unstet-algo/unstet-algo.js &

then start unstet-deamon with:

cd unstet
node unstet-daemon/unstet-daemon.js &

In production it could be usefull to create the file unstet:

#!/bin/sh
cd /path/to/unstet/
node unstet-algo/unstet-algo.js &
node unstet-daemon/unstet-daemon.js

and then do

cp unstet ~/bin/
chmod +x ~/bin/unstet

now you cat start all together just with

unstet

Update

To update the package from Github.com do

cd unstet
git pull origin

Client Specific Hints

Rasperry PI

To hide the mouse pointer install unclutter:

sudo apt install unclutter

then remove the screensave from systemwide lxsession-autostart: /etc/xdg/lxsession/LXDE-pi/autostart:

@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
#@xscreensaver -no-splash                                       #<------ add a leading #
@xset s noblanc
@xset s off
@xset s -dpms

You also might want to increase the GPU-memory to 256 Mb in case the videos are laging. See https://www.elektronik-kompendium.de/sites/raspberry-pi/2002121.htm for details

No sound on HDMI? As simple as right click on the speaker and change it to hdmi.