Raspberry PI Internet Radio Constructors Manual Bob Rathbone Computer Consultancy www.bobrathbone.com 20th of May 2014 Version 3.5 Bob Rathbone |Raspberry PI Internet Radio - / 1 Contents Introduction ............................................................................................................................................ 8 Hardware .............................................................................................................................................. 11 Raspberry PI computer ..................................................................................................................... 11 The HD44780 LCD display ................................................................................................................. 11 Radio variants ................................................................................................................................... 12 Housing the radio .............................................................................................................................. 12 Wiring .................................................................................................................................................... 13 Version 2 boards (latest) ................................................................................................................... 14 Version 1 boards (early boards) ........................................................................................................ 14 Rotary encoder wiring ....................................................................................................................... 14 LCD Module Wiring ........................................................................................................................... 15 Power supply considerations ............................................................................................................ 16 GPIO Hardware Notes ........................................................................................................................... 17 Parts List ................................................................................................................................................ 18 Construction HD44780 LCD................................................................................................................... 19 Building the LCD and pushbuttons interface board .......................................................................... 19 Construction using an Adafruit LCD plate ............................................................................................. 21 Software installation ............................................................................................................................. 22 SD card creation ................................................................................................................................ 22 Conventions used in this tutorial ...................................................................................................... 22 Online update and upgrade of the Operating System ...................................................................... 22 Radio Software Installation ............................................................................................................... 22 Software download ........................................................................................................................... 23 Install the I2C libraries ...................................................................................................................... 23 Checking Network Time Daemon ..................................................................................................... 25 Setting the time zone ........................................................................................................................ 26 Changing the system hostname and password ................................................................................ 27 Source files ............................................................................................................................................ 29 The LCD Class .................................................................................................................................... 29 The Radio Daemon ............................................................................................................................ 30 The Adafruit Radio daemon .............................................................................................................. 30 The Daemon Class ............................................................................................................................. 30 The Radio Class ................................................................................................................................. 30 Bob Rathbone |Raspberry PI Internet Radio - / 2 The Rotary class ................................................................................................................................ 30 The Log class ..................................................................................................................................... 30 The RSS class ..................................................................................................................................... 30 The Translate class ............................................................................................................................ 30 LCD test programs ............................................................................................................................. 31 Switch test programs ........................................................................................................................ 31 The create_playlists program ........................................................................................................... 31 The display_current program ........................................................................................................... 31 Installing and Testing the Music Player Daemon .................................................................................. 32 Install the Music Player Daemon ...................................................................................................... 32 Configure the MPD daemon ............................................................................................................. 32 Test the Music Player Daemon ......................................................................................................... 33 Configuring USB speakers instead of the analogue output .............................................................. 33 Upgrading from earlier versions ....................................................................................................... 34 Configure the Radio daemon ................................................................................................................ 35 Disable serial interface ...................................................................................................................... 35 Configure radio program log rotation ............................................................................................... 35 Configure the Radio program to start automatically at boot time ................................................... 36 Operation .............................................................................................................................................. 37 Starting the program ......................................................................................................................... 37 Buttons .............................................................................................................................................. 39 Rotary encoder operation ................................................................................................................. 40 Mute function ................................................................................................................................... 41 Playing MP3 and WMA files .............................................................................................................. 41 Playing music from a USB stick ..................................................................................................... 41 Playing music from the SD card .................................................................................................... 41 Playing music from a Network Attached Storage (NAS) ............................................................... 41 Organising the music files ................................................................................................................. 41 MPD Logging ..................................................................................................................................... 41 Radio program logging ...................................................................................................................... 42 Configuration and status files ........................................................................................................... 43 Displaying an RSS feed ...................................................................................................................... 43 Using the Timer and Alarm functions ..............................................................................................