A pretty basic painting app for the Raspberry Pi Unicorn HD hat. Allows multiple people to paint at once & updates in real time.
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README.md

Unicorn Paint

A painting webapp, controlling a 16x16 LED matrix. It allows multiple people to paint at once & updates in real time.

This project includes the following components:

Live example hosted at: https://unicorn.mfashby.net

screenshot

Running

Ensure SPI is enabled on your raspberry pi:

sudo raspi-config nonint do_spi 0
sudo reboot

Run with docker:

docker pull mfashby/unicornpaint
docker run --device /dev/spidev0.0:/dev/spidev0.0 --publish 3001:3001 mfashby/unicornpaint

Or download the docker-compose file and run with

docker-compose up -d

Or install Go, clone the repository & run directly with

go get github.com/ecc1/spi github.com/gorilla/websocket github.com/MFAshby/unicornpaint/unicorn
go run Server.go