Disco-Pi @Raspberry_Pi #PiDay #RaspberryPi

Neat project tutorial from instructables user haydockjp.

This instructable shows how to use a Raspberry Pi to control a coloured LED strip, based on music played from a web browser.

It shows how to create a basic website using Node.js over HTTPS and use socket.io over WSS (Secure Websocket).

The website has a single page which has a very basic layout. The webpage populates a drop down list with music files, which are located in the public/audio folder on the server. Selecting an option in the list plays the music file in the webpage using the HTML 5 audio element. While playing the music file, the webpage uses the AudioContext interface to analyse the music, which is then sent to the server over a secure websocket connection.

Read more.

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