An connected radio checking the internet to see when and for how long it should play.
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Operation Principle: The Raspberry Pi queries a google spreadsheet to retrieve the "wake up" time, the "sleep time" & the duration of the play. A button can also start/stop the radio. Volume control is also available.
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Video: https://www.youtube.com/watch?v=sbtpnE07F0E
Step-by-step instructions: http://www.instructables.com/id/Raspdio/
GSpreadsheet: https://docs.google.com/spreadsheets/d/1iO9__C7b31zWULhzjJbyP4z-LmNbKU_2CnkXlfL1QnA/edit