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Hyperion is an open source ambient light implementation controlled primarily by an Raspberry Pi. The main features of Hyperion are:
1. Low CPU load. For a led string of 50 leds the CPU usage will typically be below 2% on a non-overclocked Pi.
2. Json interface which allows easy integration into scripts.
3. A command line utility allows easy testing and configuration of the color transforms (Transformation settings are not preserved over a restart at the moment...).
4. Priority channels are not coupled to a specific led data provider which means that a provider can post led data and leave without the need to maintain a connection to Hyperion. ...
Kitchen Screen for Chromis POS, and other open source software
...This software is designed to be used in an environment where orders are placed remotely and displayed in the kitchen or other areas of the business.
The software is designed to take advantage of low cost hardware if required, this includes the Raspberry Pi 2.
Belenos is an automated sun reflector for solar concentration.
It is a system based on a Raspberry Pi board (ARM Linux board). Two motors allows to pilot the reflector orientation to follow the sun along the day. This system can receive tele-command and send tele-metry on TCP\IP network.