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[](https://opensource.org/licenses/mit-license.php)
[](https://snyk.io/test/github/sexybiggetje/pixdisp?targetFile=package.json)
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[](https://codeclimate.com/github/sexybiggetje/pixdisp/maintainability)
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[](https://codeclimate.com/github/sexybiggetje/pixdisp/test_coverage)
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[](https://travis-ci.org/sexybiggetje/pixdisp)
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A small application to drive LED matrix displays, such as the [Pimoroni Unicorn ](https://shop.pimoroni.com/?q=unicorn%20hat ), from nodejs. My intention is to create a digital graffiti/guestbook system and a general animation system. This is a project for fun, so if you have a feature just request it! Or add it and I'll review it. Social coding ftw.
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Make sure you are on a recent nodejs version. Raspbian has an old version. Use [Nodesource ](https://github.com/nodesource/distributions ) ;).
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Also, use a decent modern browser. I wrote recent syntax, so probably works best in Chrome 62+. Firefox is known to have some issues, Edge works, Safari is a PITA. Just wait for your browser to play catch up then with recent standards. If you dislike Chrome, you can put this through Babel. But you're on your own there.
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Copy config.example.json to config.json and pick a driver + display size.
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execute:
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npm install
nodejs pixdisp.js
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optionally npm install pi-spi jpeg-js mjpeg-server
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Navigate to http://localhost:8080/
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Matrix driver & Unicorn Hat HD driver inspired by https://github.com/vesteraas/node-unicornhathd
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JPEG encoding by https://github.com/eugeneware/jpeg-js
mjpeg-server by https://www.npmjs.com/package/mjpeg-server
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### Unit tests
This application has some unit tests, making use of [Jest ](http://facebook.github.io/jest/ ). Jest is configured as a dev dependency.
execute:
npm test
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Some code linting practices and security tests can be executed by running the lint task:
npm run lint
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### Drawing
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Simple clicking on the canvas in the responsive webinterface makes things light up; when you press submit it will get sent to the device.
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### Camera
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The webinterface allows you to capture your camera and submit images from there.
### Webinterface
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A simple web interface is included for drawing on the device. Defaults to port 8080.
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### Coding
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[](http://www.youtube.com/watch?v=4mPzOF_h1kQ) (Click for youtube)
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With an advanced editor you can write simple animations in the browser using a secure sandboxed javascript. Documentation will follow here once the API is final.
