This repository has the code for the MOOT (Matter Out Of Time), a.k.a. "the time machine".
MOOT is an interactive art installation built by Glass House Arts for Burning Man 2024.
The basic steps for director are:
- Read the distance input stream
- Use that data to calculate mode, audio frequency, playback speed, and lighting parameters.
- Pass relevant data to MQTT
- Generate audio output
video_server picks up MQTT video playback parameters and uses them to scrub through video. It will run as one
video per computer, on Raspberry Pi 5s.
screen_saver is a Rasperry Pi dedicated to running two video streams, totally independent from above. The streams are:
- Time delay webcam
- https://scottdraves.com/bomb
This uses Python 3, and you'll need to install the libraries in requirements.txt.
To run just get into the directory in the console and run python main.py
To make a PR I had to use sudo apt install gh to auth.
Also best to make a virtual environment. On the pi:
cd ~
python3 -m venv moot
nano ~/.bashrc
Add source ~/moot/bin/activate and restart.
Mac:
brew install mosquitto
Pi:
sudo apt-get install mosquitto mosquitto-clients
To start: mosquito
I had trouble using pip to install pyaudio on the mac. The solution was here, including having to install the command line tools for Xcode.
I also need to install the dev version of portaudio.
sudo apt-get install portaudio19-dev
I get weird errors with one USB sound card on the Pi, but the other one works.
Pip also failed on the Raspberry Pi for pygame, numpy, and others that need precompiled wheels. The solution was to build the wheel locally.
sudo apt-get install python3-<packagename>
I had to enable I2C Interface on Raspberry Pi, which is disabled by default: Start > Preferences > Raspberry Pi Configuration > Interfaces tab > I2C > Enabled
When using nix, all of the required packages are defined in flake.nix. To get the developing enable nix flakes and run nix develop.
If using nixos, make sure the following option is enabled. hardware.pulseaudio.enable = true;
I tried a version that put opencv in a thread, and it really doesn't like that.
on director i2cdetect -y 1 will show connected i2c devices
mosquitto_sub -h 192.168.0.200 -t "moot/speed"
director, mosquitto broker, lights
time delay,
ambient audio
- director:
192.168.0.200 - PixelBlaze:
192.168.0.205 - moot router:
162.168.0.1
Others are dynamic.