Code, docs and config for Burning Seed camp Bhima the Dragon artcar bus, Bhima. #burningseed #burningman #artcar

Questions etc. to [email protected]

• Software-controlled LED surface for the dragon bus
  • Video player
  • Fledgling API for building Processing-like algorithmic sketches
• Video import from USB
• Mobile web app for primary control
• semi-automatic pixel point detection within a camera field
• Config file generator for pixelpushers.
• deployment script for config files
• Automated LED mapping from camera field
• Map Editor for composing and fine-editing different mapping scans

• Installation on Linux relies on java and libgstreamer being installed (normal on ubuntu) as well as a gstreamer plugin (seemingly not all installed by default) which can be installed with:

sudo apt install default-jdk gstreamer1.0-libav ubuntu-restricted-extras

• Java application
  • Processing used as application API
  • Pixelpusher LED controllers drive lights
• API module contains common code and interfaces

The main build tool is gradle with a root module and the following submodules:

• api : common module that contains interfaces and commonly used components between dragonmind and dragonmind-web.
• dragonmind : main implementation module for driving the dragon LEDs
• dragonmind-web : web app REST API and web server for client
• client : react mobile web app that calls REST API

To build with gradle at the command line from the root:

gradle build

Or to build a production distribution that can be deployed with the deployment shell script, run:

gradle dragonmind:distTar

To run tests:

gradle test

To see other build targets (mostly standard gradle things):

gradle tasks

• java 1.8 : (back off! this is imposed solely by processing which has been a total pain in the neck)
• processing : library for 2d graphics and application framework
• processing-video : library that extends processing with the ability to process video files
• junit : unit testing
• slf4j : logging API
• dropwizard : currently only used for REST api and web server for dragonmind-web
• react, mui : js ui framework for dragonmind-web

• add instructions and status for stick slurper to mobile web app so people can add content
• add video file uploader
• security - authentication
• create simulator client view
  • add to bhima web site?
• build front-panel on raspberry pi 4
  • low-res landscape touchscreen
  • call REST endpoints
  • decide what UI app to use, must be lightweight:
    • pygame? might be snappiest
    • browser? benefit to be able to run same on mobile phone
  • add server start, stop and restart function
    • decide RPC method here, SSH?
  • start on pi boot,
• rewrite live video output as a websocket stream
• make tail of system console log (show on mobile app / front panel)

• configure production logging to file
• make work with recent jdk (jee modules were removed, jaxb etc.)
  • ? can we upgrade dropwizard to fix this?
  • Will upgrading processing help this?
• fix linux 64 bit native libs result in running video (video scaling is currently wrong)
• add daemon mode
• add to SystemInfo (try to be portable):
  • performance metrics: e.g. render time
  • temperatures
  • database size and disk usage
  • network info
  • runtime info e.g. os, ram usage etc.
• automatic rsync when internet connection is working
  • authenticate computer with a few known wifi APs
  • video directory, logs
  • some indication of most recent sync
• upgrade from gradle 6.8.1 to 7.x
• move test pattern into its own Program
• effect: rotozoomer (tesselation, kaliedoscope)
• parametised geometric algorithms (e.g. sacred geometry shiz) using pixelpusher processing library
• effect: mirrorball sparkle scales
• test shape-aware algorithms, non-rectangular edges e.g. shaded dragon body, shadows, specular highlight
• enable proper GUI by creating outer swing frame with PApplet component
• Dynamic runtime config of segment wiring
• editing of modular maps include rotation, translation, arbitrary quad-skew with retained local coordinates
• all GUI image scaling with overlay rendering properly registered
• test ideas: audio-input, accelerometer input, theremin-style control field?
• better and more flexible server-side video transcoding, shaping, trimming etc. using service wrapping ffmpeg or gstreamer

Bookmarks from initial research into using pixelpushers for this project:

• PixelPusher BetterPixel Singles (10 pack) - PixelPusher & LED Strips
• PixelPusher LPD8806 RGB LED Strip, IP65 adhesive backing - PixelPusher & LED Strips
• PixelPusher 60x32 pixel Video Wall Kit - PixelPusher & LED Strips
• PixelPusher WS2801 RGB 2" Pixel Modules 12V - PixelPusher & LED Strips
• Heroic Robotics PixelPusher - PixelPusher & LED Strips
• PixelPusher: a large scale LED controller for Processing - Processing Forum
• PixelPusher-processing-sketches/pixelpusher_starfield at master · robot-head/PixelPusher-processing-sketches · GitHub
• GitHub - robot-head/PixelPusher-artnet: ArtNet bridge for PixelPusher
• PixelController « PIXELinvaders
• poly-gone/PixelPusher.java at master · wurzle/poly-gone · GitHub
• Light Painting Wand - Hackster.io
• Simple Ping Pong (led mapping) +PixelPusher – ArmyRdz
• PixelPusher-java/DeviceImpl.java at master · robot-head/PixelPusher-java · GitHub
• full hd resolution - Google Search
• How to build a flexible LED Curtain display by LED strips T1000S SD card controler Soft Display DIY - YouTube
• Manipulating large number of LED fixtures in MadLight - garageCube
• How to Build a LED Display flexible Soften CHEAP and Easy
• elektric-junkys.com | Flexible LED Video Screens | WS2813 | 3D Stretch Ceilings | LED Panels | 3D LED Infinity Mirrors | LED DIY Instructions |
• how to build your own flexible LED Display XXL WS2811 real time Video Transmission 2mX1.5m cortina - YouTube
• Giant PixelPusher array - YouTube
• Pixelpusher video wall visuals to music - YouTube
• PixelPusher Hardware Configuration Guide - PixelPusher
• PixelPusher: Intelligent Networked LED Controller by Heroic Robotics, Inc. — Kickstarter
• Kreative Software · GitHub
• rainbowdash/Makefile at master · kreativekorp/rainbowdash · GitHub
• Search · topic:classic-mac-os org:kreativekorp fork:true · GitHub
• PixelPusher's community hub
• Blinkdom - Hackster.io

The WS2811 LED strips we are using on Bhima use colour order "grb" (green, red, blue) but the per-strip start colour (used if the config option blank_strips_on_idle=1 and when no data is available "for a while") is specified in the orthodox RGB hex value, e.g. FF0000 is full red.