SlimPi has been replaced by PaperPi, a more robust, and plugin friendly version.

For complete build instructions and links to a spiffy case, head over to the Project Log at Hackaday.io.

SlimPi provides a Logitech Media Player display using a WaveShare e-Paper display and a Raspberry Pi.

• Features
• Quick Install
• Requirements
• System Setup
• Software Configuration
• Hardware Setup
• Building SlimPi
• Screen Layouts
• Plugin Modules

Table of contents generated with markdown-toc

SlimPi provides a now playing display for a selected Logitech Media Player. When the player is paused, an alternative screen is displayed.

Display includes:

• Track Title
• Artist Name
• Album Name
• Album Artwork (if available)
• Now Playing Mode: e.g. play, stop, pause

When the music is paused, the display shows an alternative screen.

Word Clock (default)

Clock

Binary Clock

The refresh rate of HAT compatable waveshare displays is relatively slow (5-20 seconds) and does not support partial refreshes. This results in the display pulsing between an all-white and all-black state several times during each refresh.

To limit the visual disturbance of a pulsing screen, the default clock is the Word Clock with a refresh rate of around 5 minutes.

If you have a working EPD installed, the following instructions will get you up and runing quickly. If you do not yet have a working screen installed, check the Hardware Setup instructions below.

1. Download the installable package from git hub
2. Decompress the tarball: tar xvzf slimpi_latest.tgz\
3. Make sure SPI is enabled on the Raspberry Pi
4. Run the installer:
   • install.sh for a daemon that starts automatically at boot, or see below for running in user space
   • user_install.sh to setup the user space configuration files
5. Edit the appropriate configuation file: /etc/slimpi.cfg for daemon or ~/.config/com.txoof.slimpi/slimpi.cfg for user space

   • Required settings that must be configured:

     • display = waveShareEPDType
     • example: display = epd5in83
       • The display type should match the model number of your HAT compatable e-Paper display
     • player_name = "Name Of LMS Player on Local Network"
     • example: player_name = slimpi
       • The player name can be found by running slimpi --list-servers:

     slimpi --list-servers
     
     Scanning for available LMS Server and players
     servers found:
     [{'host': '192.168.178.9', 'port': 9000}]
     
     players found:
     name: Chilab'le <---player_name
     playerid: 00:04:20:07:e6:44
     modelname: Squeezebox Classic
     
     
     players found:
     name: slimpi <---player_name
     playerid: dc:a6:32:29:99:f0
     modelname: SqueezeLite   
     

• Raspberry Pi 4 Model B
  • RPI 3 Model A should work as well, but is untested
• WaveShare e-Paper display with e-Paper HAT
  • Any waveshare display should work
  • Supported WaveShare ePaper Displays

• HiFiBerry hat (optional)
  • The HiFiBerry DAC+ PRO and similar boards add high-quality audio output to the Pi so it can act as a display and also work as a LMS client player using squeezelite
  • GPIO 2x20 headers must be added to the board to support WaveShare HAT
  • HiFiBerry's DAC+ Bundle with the following configuraiton is a good choice:
    • DAC+ Pro
    • Acrylic Case for (RCA) AND DIGI+
    • Raspberry Pi 4B 2GB (1GB should be sufficient as well)
    • 16GB SD Card
    • PowerSupply (USB C 5.1V/3A)
    • 2x20 Pin Male Header (required for WaveShare HAT)

Enable SPI

$ sudo raspi-config

Select Interfacing Options > SPI and set to Yes

• Logitech Media Server running on local network
  • An LMS instance can be run on the Raspberry Pi - Home Hack - Creating a Raspberry Pi Squeezebox server

• squeezelite (optional)

  • Squeezelite, in combination with a HiFiBerry, allows the Pi to be usded as LMS display and client player

  Note: to make squeezelite play nice with other applications such as raspotify (librespot), add the following line to /etc/default/squeezelite:

  SB_EXTRA_ARGS="-C 10"

  This will allow squeezelite to close the output device after 10 seconds allowing other audio software to access it.

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