A small application to drive LED matrix displays, such as the pimoroni unicorn, from nodejs. My intention is to create a digital graffiti/guestbook system.

Make sure you are on a recent nodejs version. Raspbian has an old version. Use nodesource ;).

Copy config.example.json to config.json and pick a driver + display size.

execute:

npm install
nodejs pixdisp.js

Navigate to http://localhost:8080/

Matrix driver & Unicorn Hat HD driver inspired by https://github.com/vesteraas/node-unicornhathd

Drawing

Simple clicking on the canvas in the responsive webinterface makes things light up.

Camera

The webinterface allows you to capture your camera and submit images from there.

Webinterface

A simple web interface is included for drawing on the device. Defaults to port 8080.